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HIAPER Pole-to-Pole Observations (HIPPO): fine-grained, global-scale measurements of climatically important atmospheric gases and aerosols

S. C. Wofsy

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S. C. Wofsy

[email protected]

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Published:28 May 2011https://doi.org/10.1098/rsta.2010.0313

Abstract

The HIAPER Pole-to-Pole Observations (HIPPO) programme has completed three of five planned aircraft transects spanning the Pacific from 85° N to 67° S, with vertical profiles every approximately 2.2° of latitude. Measurements include greenhouse gases, long-lived tracers, reactive species, O₂/N₂ ratio, black carbon (BC), aerosols and CO₂ isotopes. Our goals are to address the problem of determining surface emissions, transport strength and patterns, and removal rates of atmospheric trace gases and aerosols at global scales and to provide strong tests of satellite data and global models. HIPPO data show dense pollution and BC at high altitudes over the Arctic, imprints of large N₂O sources from tropical lands and convective storms, sources of pollution and biogenic CH₄ in the Arctic, and summertime uptake of CO₂ and sources for O₂ at high southern latitudes. Global chemical signatures of atmospheric transport are imaged, showing remarkably sharp horizontal gradients at air mass boundaries, weak vertical gradients and inverted profiles (maxima aloft) in both hemispheres. These features challenge satellite algorithms, global models and inversion analyses to derive surface fluxes. HIPPO data can play a crucial role in identifying and resolving questions of global sources, sinks and transport of atmospheric gases and aerosols.

1. Introduction

Future action on climate change requires us to be able to distinguish surface emissions of greenhouse gases (GHGs) directly associated with human activities from indirect effects of climate change and from natural variations. Measurements of concentrations of GHGs (e.g. CO₂, CH₄ and N₂O) and tracers (e.g. CO, SF₆, O₂/N₂) have been used to derive surface fluxes, and to attribute emissions to human activity or natural processes, in a variety of conceptual frameworks [1–6]. A common approach is to exercise atmospheric chemistry transport models (ACTMs) to simulate concentrations of pollutants in time and space over the globe, typically combining a priori surface emission flux fields, rates for chemical reactions in the atmosphere and assimilated meteorological fields. The surface flux field is then adjusted to obtain the best match between model output and data. The model is effectively ‘inverted’ to define optimal sources and sinks from atmospheric concentrations.

Global-scale ACTMs have difficulty resolving sharp chemical gradients, such as exist at air mass boundaries, at the tropopause [7,8] or in plumes of tracers emanating from strong source regions, a limitation inherent in the numerical methods used in the Eulerian model framework [9]. ACTM outputs are commonly compared with datasets that likewise do not resolve sharp gradients or define fine-scale variance and covariance, e.g. data from sparse ground stations or satellites. These data are in some respects ideal for comparison with global simulations, since they may be presumed to represent large air masses and global-scale processes. But, because accurate knowledge of vertical and horizontal gradients is available neither from global data nor from global models, the fine-grained structure of atmospheric tracer distributions is unknown and we have no way to assess how important this structure might be for inverse models.

Air mass boundaries move in space and time. Spatially aggregated data, or measurements from widely spaced locations (e.g. remote island stations), give horizontal patterns with diffuse boundaries. This fuzzy picture might be correct if data are averaged over time (e.g. for a month), but the pattern is never actually present in the atmosphere. A model may reproduce these smoothed gradients with simulated rates of transport across air mass boundaries that are significantly in error, leading to incorrect surface fluxes inferred from an inverse analysis. Similarly, if the vertical gradient in a model is systematically in error, the atmospheric mass burden (or column integral) is improperly simulated, and significant bias can result when the model is inverted to obtain optimal surface fluxes (e.g. [10]).

Surface fluxes obtained by inverting global models are also subject to systematic errors derived from other elements of the model framework, in addition to transport errors. For example, misidentification of source processes and locations, or incorrectly specified temporal variation of a priori fluxes, introduces errors into ‘optimal’ flux fields associated directly with model constructs. Since generally the only adjustable parameters in an inverse model are surface fluxes, strong, independent tests of all elements of the model framework are needed, using atmospheric measurements, in order to reduce the impact of these diverse systematic errors and biases.

This paper introduces the data obtained by the HIAPER Pole-to-Pole Observations (HIPPO) project, a sequence of five global aircraft measurement programmes that sample the atmosphere from (almost) the North Pole to the coastal waters of Antarctica, from the surface to 14 km, spanning the seasons. Three have been completed to date—January and November 2009, April 2010—to be followed by June and August/September 2011 (denoted HIPPO-1, -2, etc.). This paper will focus primarily on results obtained in HIPPO-1, for which data have been finalized.

HIPPO is intended to obtain global-scale, fine-grained data for the first time, for a large number of atmospheric constituents. HIPPO data provide high-resolution, systematic, pole-to-pole curtains with deeper vertical extent than possible in the past, acquired at high temporal resolution to preserve correlations among constituents. The goal is to provide new perspectives on how to use data to wring out transport issues in ACTMs, to identify and address the errors in the spatial/temporal representation of surface fluxes and reaction rates, to discover new features of trace gas and aerosol emissions and global-scale transport and to rigorously test satellite algorithms. A related goal is to elucidate the underlying processes and controls on surface emission fluxes, in order to be able to predict emissions and atmospheric concentrations in the future.

Fine-grained data have been obtained previously from aircraft platforms, but only a few datasets have long transects covering extended time periods, principally from commercial airliners that acquire data exclusively at cruise altitude plus vertical profiles entering/leaving large urban complexes [11–13]. High-resolution datasets spanning the depth of the atmosphere over large areas are available from a few surveys [14–17] that covered much smaller domains and seasonal intervals than HIPPO. Thus, HIPPO data provide hitherto unavailable information for testing and refining understanding of global distributions and surface fluxes of trace gases and aerosols.

2. HIAPER Pole-to-Pole Observations payload

HIPPO measurements are summarized in table 1. The platform is the National Science Foundation’s Gulfstream V (GV or HIAPER) aircraft operated by the National Center for Atmospheric Research (NCAR). Major GHGs (CO₂, CH₄, N₂O) and other important trace species (CO, SF₆, O₂/N₂, H₂, etc.) were measured at high frequency, many at 1 Hz, with two (or more) independent measurements for each to provide redundancy (five for CO₂), check calibration and assess sensor drift. The quantum cascade laser spectrometer (QCLS), which measures CO₂, CO, CH₄ and N₂O, is a mid-infrared (IR) sensor developed by Harvard University and Aerodyne Corp., owned by NCAR, and operated during HIPPO by the Harvard team; the Observations of the Middle Stratosphere (OMS) is a Harvard CO₂ sensor using an IR gas analyser (IRGA), which has logged more than 300 flights on airborne platforms [18]. The Research Aviation Facility CO monitor (RAF-CO) refers to NCAR’s AeroLaser AL5002 vacuum–UV sensor. Data at 1 Hz were obtained in two independent measurements for O₃ and for H₂O (by the Vertical Cavity Surface Emitting Laser (VCSEL), a new open path near-IR multi-pass spectrometer [19], and by the Unmanned Aircraft Systems (UAS) Chromatograph for Atmospheric Trace Species (UCATS)-H₂O, a National Oceanic and Atmospheric Administration (NOAA) mid-IR spectrometer with a sampling inlet). AO2 is the NCAR Airborne Oxygen Instrument, which measures O₂ using a vacuum–UV absorption technique [20] and CO₂ using a single-cell IRGA (Licor 850). UCATS and the PAN (PeroyAcylNitrate) and other Trace Hydrohalocarbon ExpeRiment (PANTHER) are on-board gas chromatographs with extensive flight histories, measuring at 1–3 min intervals.

Table 1.Measurements and species on the GV in HIPPO. Bold font indicates species with three or more measurements, sampling rates in parentheses.
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Harvard/Aerodyne—HAIS QCLS	CO₂, CH₄, CO, N₂O (1 Hz)
NCAR AO2	O₂/N₂, CO₂ (0.5 Hz)
Harvard OMS CO₂	CO₂ (0.5 Hz)
NOAA CSD O₃	O₃ (1 Hz)
NOAA GMD O₃, H₂O	O₃, H₂O (1 Hz)
NCAR RAF-CO	CO (1 Hz)
NOAA UCATS and PANTHER gas chromatographs	CO, CH₄, N₂O, CFCs, HCFCs, SF₆, CH₃Br, PAN, CH₃Cl, H₂, H₂O (1 sample per 70–200 s)
whole-air sampling: NWAS (NOAA), AWAS (Miami), MEDUSA (NCAR/Scripps)	O₂/N₂, N₂/Ar, CO₂, CH₄, CO, N₂O, other GHGs, halocarbons, SF₆, H₂, COS, CS₂, solvent gases, reactive hydrocarbons, marine species, isotopes of CO₂, etc.
VCSEL Princeton/SWS	H₂O (1 Hz)
NOAA SP2	BC mass, size (1 Hz)
MTP, wing stores	T, P, vertical structure, winds, aerosols, cloud water

A comprehensive suite of GHGs and a diverse ensemble of halocarbons, hydrocarbons and sulphur species were measured by the whole-air sampler system (WAS; [8]), using three different collection systems: stainless steel electropolished cylinders (the Advanced Whole Air Sampler (AWAS) from the University of Miami), glass vessels from the NOAA Programmable Flask Package (PFP) programme (NWAS from NOAA) and special glass vessels for measuring O₂/N₂ and Ar/N₂ ratios and the isotopic composition of CO₂ (Multiple Enclosure Device for Unfractioned Sampling of Air (MEDUSA) from the University of California at San Diego).

BC was measured at 1 Hz by the NOAA single-particle soot photometer (SP2) [21] on air drawn into the cabin. The SP2 uses a laser beam to heat the BC component of individual fine-mode aerosol particles to vaporization, resulting in emission of thermal radiation that is interpreted to give the BC mass concentration and size distribution. Other particle probes, including a cloud droplet probe (CDP), the NCAR Ultra High Sensitivity Aerosol Sampler (UHSAS), the 2D-C particle imager and the PMS liquid water sensor (King) (Precipitable Liquid Water Content (PLWC)), resided on the wing, along with the microwave temperature profiler (MTP), which measures the temperature profile above and below the plane, and a digital camera that acquired an image every second.

3. Results

Figure 1 shows the flight tracks for HIPPO-1 and -2, plus vertical sampling and observed isentropic structure for HIPPO-1. Each deployment obtained a southbound cross section of the atmosphere near the International Date Line, covering the Arctic Ocean, Alaska and the entire Pacific to just short of Antarctica. Northbound, HIPPO-1 traversed the South Pacific to sample in the eastern tropical Pacific upwelling zone, and HIPPO-2 sampled the western Pacific warm pool. We obtained 138, 151 and 136 vertical profiles in HIPPO-1, -2 and -3, respectively, spanning 67° S–80° N. On average, consecutive samples in the mid-troposphere are separated by 2.2° of latitude, with 4.4° between consecutive near-surface or high-altitude samples. Most profiles extended from approximately 300 to 8500 m altitude, constrained by air traffic, but significant profiling extended above approximately 14 km (figure 1c).

Figure 1d shows the cross section of potential temperature (Θ) versus latitude and GPS altitude (m.a.s.l.) during HIPPO-1. A dome of very cold, stable air, with a strong latitude gradient of Θ, covered the Arctic, with a sharp transition at the northern edge of the polar jet, near 60° N. There was a narrow zone of stratospheric influx just equatorward of 60° N, and then a belt of much weaker vertical stratification from 60° to 40° N, the region of the ‘warm conveyor belt’, where vertical transport occurs in association with jet stream dynamics and mid-latitude storms [22,23]. Equatorward of 40° N, there was a broad Θ bulge in the middle and upper troposphere, reflecting the influence of deep convection and the Hadley circulation. The Southern Hemisphere (SH) had similar structure, but the features were weaker, reflecting the summer season.

Figure 2 shows cross sections along the date line for key species in January 2009 (HIPPO-1). Atmospheric tracers displayed sharp transitions in the horizontal, demarcating the boundaries between polar, middle latitude, subtropical and tropical air masses, and at the intertropical convergence zone (ITCZ; the persistent line of convective storms that circles the globe near the equator, demarcating the boundary between the hemispheres). Gradients were much weaker in the vertical than in the horizontal, except in the northern polar region where fresh inputs of CO, CO₂, CH₄ and SF₆ were evidenced by high values near the surface and the presence of very short-lived pollutants (e.g. benzene). According to model simulations (discussed further below), these pollutants originated from Asia and Europe. In the Arctic, tracer isopleths broadly aligned with isentropes, with sporadic anomalies owing to proximate emissions or to stratospheric influence. Convective transport across isentropes was evident elsewhere, in mid-latitudes, tropics and subtropics, particularly for the longest lived tracers (e.g. SF₆ and N₂O). The peak value of SF₆ over the North Pacific was observed in the middle troposphere. Concentrations of N₂O showed a completely different pattern from other GHGs, with a prominent bulge in the middle and upper tropical and subtropical troposphere, plus sporadic enhancements between 10 and 14 km. Similar features were seen for N₂O in all three missions flown so far.

Water vapour showed the expected increases with temperature and tropical origin. Input of very wet air was notable in the South Pacific convergence zone (SPCZ; 10–20° S). The SPCZ is a persistent frontal formation of widespread cloud cover and precipitation extending in a southeast direction from New Guinea into the SH mid-latitudes, with strong convection typically extending over a large area. It is specially prominent in boreal winter [24]. The SPCZ is spatially larger, and contains more intense convection, than similar convergence zones elsewhere, such as the South Indian Convergence Zone (SICZ) and the South Atlantic Convergence Zone (SACZ), although it is not clear why [24]. Analogous, but less distinct, anomalies have been observed for other chemical tracers near the SPCZ [25,26]. In each of the three HIPPO missions so far, the water vapour plume from the SPCZ has been larger in extent, and penetrated deeper into the atmosphere, than in the ITCZ. These results suggest that the SPCZ may be an important global source of water vapour to the tropical tropopause layer over the Pacific, at least in the boreal winter season, supporting inferences from observations of cirrus clouds over the tropical western Pacific during that season [27].

Figure 3 shows cross sections for HIPPO-2 in November 2009. Inverted vertical profiles (i.e. with higher concentrations aloft) were surprisingly strong. Pollutant levels typical of urban corridors were found in a thick layer at 6–8 km over an extensive region of the Arctic, overlying clean air. The layers preserve coherence (figure 3d,e) among tracers despite sharp gradients and transport over thousands of kilometres, with strong vertical uplift. Very high levels of BC aerosol were present, and absorption of solar radiation was visible (figure 3c). High aerosol concentrations indicate the absence of efficient precipitation scavenging, suggesting that polluted air was lofted by isentropic advection over the cold dome that was in the process of developing over the Arctic. Notable enhancements of N₂O were observed in some of the plumes. In many descents, enhanced CH₄ concentrations were observed near the surface of the Arctic Ocean, sometimes in otherwise pristine air, possibly signifying emission from biogenic sources or from CH₄ hydrates (e.g. figure 3c, below 2000 m). Horizontal gradients were again very sharp at air mass boundaries.

Figure 4 illustrates the meridional gradients of CO₂ and O₂/N₂. Concentrations of CO₂ were enhanced above the surface (but not at the surface) from 45° S to 70° S in January (figures 2c and 4a), which might confirm a signal of elevated CO₂ in this region similar to that reported by the Atmospheric Infrared Sounder (AIRS) satellite [28]; the structure of the CO₂ distribution is rather complex, with probable contributions from multiple processes including fires in Australia and uptake of CO₂ at the ocean surface. There is excess O₂ near the surface all the way from 20° S to 60° S (figure 4b), reflecting inputs to the atmosphere from both the ocean and the land, including thermal degassing of O₂ from the ocean and biological production of O₂ from land and ocean in summer.

Preliminary simulations of HIPPO-1 data have been made with global models including Goddard Earth Observing System (GEOS) Chemical Tracer Model (CHEM) [1], ACTM [6] and Global and regional Earth-system Monitor using Satellite and in situ data/Monitoring and Forecasting Atmospheric Composition (GEMS/MACC) [29]. Examples are shown in figure 5a–d. The models extracted computed values along the flight track for detailed comparison with HIPPO. Model simulations performed reasonably well in many respects, as can be seen by comparing with figure 2. Simulations of CO₂ from the GEOS-CHEM model ([30]; figure 5a) captured many features of the observations (figure 2), including the relatively well-mixed profiles in subpolar and middle latitudes. Vertical contrasts occurred mostly over the Arctic and Antarctic/Southern Ocean, reflecting inputs from fossil fuels and marine biological uptake, respectively. But horizontal gradients were much sharper in the atmosphere, and vertical gradients weaker, than in the models. Most satellite data likewise do not resolve the observed gradients. Enhanced CO₂ poleward of 40° S seen by HIPPO is not reproduced in the model; the major pollution signature appears at 60° N instead of 80° N; enhanced surface CO₂ in the SH deep tropics, probably from equatorial upwelling, is not simulated in the model.

Figure 5. Model simulations for HIPPO-1, southbound along the date line, January 2009. (a,b) Cross sections of CO₂ (ppm) and SF₆ (ppt) from the GEOS-CHEM and ACTM models, respectively. (c) Vertical profiles of N₂O in the subtropics (ACTM and observed in HIPPO-1). Blue filled squares, HIPPO-1; black open circles, ACTM. (d) Cross section for N₂O from the ACTM for the HIPPO-1 flight track (flights 2–7). (Online version in colour.)

Both the ACTM and GEOS-CHEM models appear to have vertical transport rates that are too weak at high latitudes (compare CO₂, SF₆ and CO in figures 2–5), both along and across isentropes. The GEMS/MACC model gives a somewhat better appearance for vertical profiles of CO and CH₄ (not shown), but has anomalies elsewhere and misses global-scale North–South gradients significantly: GEMS/MACC predicts 70 ppb for ΔCO between the Antarctic and the Arctic, compared with approximately 95 ppb observed.

HIPPO data for N₂O differ radically from model results. Simulations completely miss the major feature of the global distribution, the tropical/sub-tropical maxima at altitude (figure 5c,d), with greater enhancement north of the ITCZ. This pattern has been observed in all six HIPPO cross sections flown to date, although the magnitude of the enhancement aloft was largest in HIPPO-1 southbound. HYSPLIT [31] trajectories showed that air near the surface originated from the east, whereas the air with enhanced N₂O concentrations, above 2 km, came from the west, suggesting sources in regions of convection in the western Pacific and/or tropical South Asia or Indonesia. Samples collected on the CARIBIC flights of commercial aircraft from Germany to India [32] also showed diffuse maxima of N₂O in the upper troposphere (8.5–12 km) during June–August, peaking in the same general latitude range as in HIPPO flights (15–25° N). It appears that much of the excess N₂O seen by HIPPO was generated in the tropics, but it is difficult to distinguish land-based sources from possible production by corona discharge or lightning in convective storms [33] or by other mechanisms.

Previous studies [34, 35] using sparse station data have already suggested that unaccounted tropical sources were needed to close the N₂O budget. HIPPO data strongly support that view. Elevated concentrations high in the atmosphere found in HIPPO indicate a notably stronger tropical source than could be inferred from surface data only. Even in the north polar region, HIPPO data often showed maximum concentrations of N₂O aloft (cf. figures 2, 3 and 5), emphasizing the difficulty of using surface measurements for modelling of this important species.

4. Summary and conclusions

HIPPO flights provide a unique dataset for atmospheric research: simultaneous, fine-grained, global, high-frequency measurements of major GHGs, tracers with a wide range of chemical lifetimes and diverse source processes, O₂/N₂ and Ar/N₂ ratios, BC and aerosols, plus the isotopic composition of CO₂. Concentration data from HIPPO are linked to world standards, and multiple measurements provide checks on data quality. The data from all missions will be publicly available within 12–18 months of collection. HIPPO data have already played a major role in calibrating total column measurements of CO₂, CO and CH₄ from the Total Carbon Column Observing Network (TCCON) of Fourier transform spectrometers [36].

First impressions already highlight new phenomena: dense pollution high over the Arctic in late autumn/early winter, with a notable component of BC; the imprint of large N₂O sources in the tropical or subtropical areas of Asia or the western Pacific and sources of CH₄ in the Arctic both from fossil-fuel extraction and from non-industrial sources. Although not discussed here, we also observed short-lived gases emanating from various marine environments across the Pacific (e.g. methyl nitrate, haloforms) and from major industrial areas.

HIPPO data clearly delineate the atmospheric imprint of summertime sinks for CO₂ and sources for O₂ in the SH, providing a new tool to infer the strength of ocean and land fluxes in the carbon cycle. Curtain plots reveal large-scale features invisible to satellites and blurred by models, revealing the internal structure of global CO₂ distributions hitherto observed fuzzily by satellites and sparse remote stations.

The most novel aspect of HIPPO is the imaging of the signatures of global atmospheric transport modes with high clarity. From the SPCZ and ITCZ to the cold dome over the winter pole, HIPPO data show the influence of convection, isentropic transport and stratosphere–troposphere exchange, with fine resolution at global scale. Remarkably sharp gradients in tracer concentrations are observed at air mass boundaries. Inverted tracer gradients, with maxima aloft, were found to be common in both hemispheres over the Pacific. These features present major challenges to global models and to observation systems using sparse surface stations and satellites. If not represented in global inverse model studies, they can lead to major biases and inconsistencies. HIPPO data can play a crucial role in identifying and resolving these issues.

Acknowledgements

The HIPPO Programme was supported by NSF grants ATM-0628575, ATM-0628519 and ATM-0628388 to Harvard University, University of California (San Diego), University Corporation for Atmospheric Research, University of Colorado/CIRES and by the NCAR. The NCAR is supported by the National Science Foundation. Participation by several instruments (SP-2, Ozone, UCATS, PANTHER, NWAS flasks), and weather forecasting, were supported by offices and programmes of the National Oceanic and Atmospheric Administration: the Atmospheric Composition and Climate Programme, the Office of Oceanic and Atmospheric Research and the Environmental Research Laboratory. The AWAS flasks system was supported by NSF grants NSF ATM0849086 and AGS0959853 to the University of Miami. VCSEL was supported by NSF grant AGS-1036275 to Princeton University. We are grateful to the crew of the GV for their dedication and professional skill in making the flights possible and in taking the GV to places not previously visited by a jet aircraft, and to the NCAR Earth Observing Laboratory for support of logistics and public outreach. The authors gratefully acknowledge the NOAA Air Resources Laboratory (ARL) for the provision of the HYSPLIT transport and dispersion model.

Footnotes

† S. C. Wofsy, B. C. Daube, R. Jimenez, E. Kort, J. V. Pittman, S. Park, R. Commane, B. Xiang, G. Santoni, D. Jacob, J. Fisher, C. Pickett-Heaps, H. Wang, K. Wecht, Q.-Q. Wang (School of Engineering and Applied Science, Harvard University, Cambridge, MA, USA); B. B. Stephens, S. Shertz, P. Romashkin, T. Campos, J. Haggerty, W. A. Cooper, D. Rogers, S. Beaton, R. Hendershot (National Center for Atmospheric Research, Boulder, CO, USA); J. W. Elkins, D. W. Fahey, R. S. Gao, F. Moore, S. A. Montzka, J. P. Schwarz, D. Hurst, B. Miller, C. Sweeney, S. Oltmans, D. Nance, E. Hintsa, G. Dutton, L. A. Watts, J. R. Spackman, K. H. Rosenlof, E. A. Ray, B. Hall (NOAA ESRL and CIRES, Boulder, CO, USA); M. A. Zondlo, M. Diao (Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ, USA); R. Keeling, J. Bent (Scripps Institution of Oceanography, University of California at San Diego, CA, USA); E. L. Atlas, R. Lueb (Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, USA); M. J. Mahoney, M. Chahine, E. Olsen (Jet Propulsion Laboratory, Pasadena, CA, USA); P. Patra, K. Ishijima (Research Institute for Global Change, JAMSTEC, Yokohama, Japan); R. Engelen, J. Flemming (European Centre for Medium-Range Weather Forecasts, Reading, UK); R. Nassar, D. B. A. Jones (Department of Physics, University of Toronto, Toronto, Canada); S. E. Mikaloff Fletcher (National Institute for Water and Atmospheric Research, Wellington, New Zealand).

One contribution of 17 to a Discussion Meeting Issue ‘Greenhouse gases in the Earth system: setting the agenda to 2030’.

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Jin Y, Stephens B, Keeling R, Morgan E, Rödenbeck C, Patra P and Long M (2023) Seasonal Tropospheric Distribution and Air‐Sea Fluxes of Atmospheric Potential Oxygen From Global Airborne Observations, Global Biogeochemical Cycles, 10.1029/2023GB007827, 37:10, Online publication date: 1-Oct-2023.

Huang R, Dong X, Cheng M, Li X, Liu Y, Wu X, Liang Y, Wang M, Fu J and Tipton M (2023) A Plant Species Dependent Wildfire Black Carbon Emission Inventory in Northern Eurasia, Geophysical Research Letters, 10.1029/2023GL104184, 50:18, Online publication date: 28-Sep-2023.

Ma J, Remaud M, Peylin P, Patra P, Niwa Y, Rodenbeck C, Cartwright M, Harrison J, Chipperfield M, Pope R, Wilson C, Belviso S, Montzka S, Vimont I, Moore F, Atlas E, Schwartz E and Krol M (2023) Intercomparison of Atmospheric Carbonyl Sulfide (TransCom‐COS): 2. Evaluation of Optimized Fluxes Using Ground‐Based and Aircraft Observations, Journal of Geophysical Research: Atmospheres, 10.1029/2023JD039198, 128:18, Online publication date: 27-Sep-2023.

Humphries R, Keywood M, Ward J, Harnwell J, Alexander S, Klekociuk A, Hara K, McRobert I, Protat A, Alroe J, Cravigan L, Miljevic B, Ristovski Z, Schofield R, Wilson S, Flynn C, Kulkarni G, Mace G, McFarquhar G, Chambers S, Williams A and Griffiths A (2023) Measurement report: Understanding the seasonal cycle of Southern Ocean aerosols, Atmospheric Chemistry and Physics, 10.5194/acp-23-3749-2023, 23:6, (3749-3777)

Remaud M, Ma J, Krol M, Abadie C, Cartwright M, Patra P, Niwa Y, Rodenbeck C, Belviso S, Kooijmans L, Lennartz S, Maignan F, Chevallier F, Chipperfield M, Pope R, Harrison J, Vimont I, Wilson C and Peylin P (2023) Intercomparison of Atmospheric Carbonyl Sulfide (TransCom‐COS; Part One): Evaluating the Impact of Transport and Emissions on Tropospheric Variability Using Ground‐Based and Aircraft Data, Journal of Geophysical Research: Atmospheres, 10.1029/2022JD037817, 128:6, Online publication date: 27-Mar-2023.

Wang Q, Crowell S and Pal S (2023) Atmospheric Variations in Summertime Column Integrated CO 2 on Synoptic Scales Over the U.S. , Journal of Geophysical Research: Atmospheres, 10.1029/2021JD036256, 128:6, Online publication date: 27-Mar-2023.

Jurányi Z, Zanatta M, Lund M, Samset B, Skeie R, Sharma S, Wendisch M and Herber A (2023) Atmospheric concentrations of black carbon are substantially higher in spring than summer in the Arctic, Communications Earth & Environment, 10.1038/s43247-023-00749-x, 4:1

Krysztofiak G, Catoire V, Dudok de Wit T, Kinnison D, Ravishankara A, Brocchi V, Atlas E, Bozem H, Commane R, D’Amato F, Daube B, Diskin G, Engel A, Friedl-Vallon F, Hintsa E, Hurst D, Hoor P, Jegou F, Jucks K, Kleinböhl A, Küllmann H, Kort E, McKain K, Moore F, Obersteiner F, Ramos Y, Schuck T, Toon G, Viciani S, Wetzel G, Williams J and Wofsy S (2023) N2O Temporal Variability from the Middle Troposphere to the Middle Stratosphere Based on Airborne and Balloon-Borne Observations during the Period 1987–2018, Atmosphere, 10.3390/atmos14030585, 14:3, (585)

Wang X, Jiang X, Li K, Liang M, Kuai L, Tan L and Yung Y (2023) Variations of Carbonyl Sulfide During the Dry/Wet Seasons Over the Amazon, Geophysical Research Letters, 10.1029/2022GL101717, 50:5, Online publication date: 16-Mar-2023.

Laughner J, Roche S, Kiel M, Toon G, Wunch D, Baier B, Biraud S, Chen H, Kivi R, Laemmel T, McKain K, Quéhé P, Rousogenous C, Stephens B, Walker K and Wennberg P (2023) A new algorithm to generate a priori trace gas profiles for the GGG2020 retrieval algorithm, Atmospheric Measurement Techniques, 10.5194/amt-16-1121-2023, 16:5, (1121-1146)

Loechli M, Stephens B, Commane R, Chevallier F, McKain K, Keeling R, Morgan E, Patra P, Sargent M, Sweeney C and Keppel‐Aleks G (2023) Evaluating Northern Hemisphere Growing Season Net Carbon Flux in Climate Models Using Aircraft Observations, Global Biogeochemical Cycles, 10.1029/2022GB007520, 37:2, Online publication date: 1-Feb-2023.

Maciel F, Diao M and Patnaude R (2023) Examination of aerosol indirect effects during cirrus cloud evolution, Atmospheric Chemistry and Physics, 10.5194/acp-23-1103-2023, 23:2, (1103-1129)

Guo H, Flynn C, Prather M, Strode S, Steenrod S, Emmons L, Lacey F, Lamarque J, Fiore A, Correa G, Murray L, Wolfe G, St. Clair J, Kim M, Crounse J, Diskin G, DiGangi J, Daube B, Commane R, McKain K, Peischl J, Ryerson T, Thompson C, Hanisco T, Blake D, Blake N, Apel E, Hornbrook R, Elkins J, Hintsa E, Moore F and Wofsy S (2023) Heterogeneity and chemical reactivity of the remote troposphere defined by aircraft measurements – corrected, Atmospheric Chemistry and Physics, 10.5194/acp-23-99-2023, 23:1, (99-117)

Kort E and McKain K (2023) Aircraft vertical profile measurements for evaluation of satellite retrievals of long-lived trace gases Field Measurements for Passive Environmental Remote Sensing, 10.1016/B978-0-12-823953-7.00020-4, (235-244), .

Nalli N, Smith N, Esmaili R, Sun B, Reale A and Barnet C (2023) Considerations for thermal satellite infrared sounder applications Field Measurements for Passive Environmental Remote Sensing, 10.1016/B978-0-12-823953-7.00013-7, (319-335), .

Basu S, Lan X, Dlugokencky E, Michel S, Schwietzke S, Miller J, Bruhwiler L, Oh Y, Tans P, Apadula F, Gatti L, Jordan A, Necki J, Sasakawa M, Morimoto S, Di Iorio T, Lee H, Arduini J and Manca G (2022) Estimating emissions of methane consistent with atmospheric measurements of methane and δ 13 C of methane , Atmospheric Chemistry and Physics, 10.5194/acp-22-15351-2022, 22:23, (15351-15377)

Jesswein M, Fernandez R, Berná L, Saiz-Lopez A, Grooß J, Hossaini R, Apel E, Hornbrook R, Atlas E, Blake D, Montzka S, Keber T, Schuck T, Wagenhäuser T and Engel A (2022) Global seasonal distribution of CH 2 Br 2 and CHBr 3 in the upper troposphere and lower stratosphere , Atmospheric Chemistry and Physics, 10.5194/acp-22-15049-2022, 22:22, (15049-15070)

Fast J, Bell D, Kulkarni G, Liu J, Mei F, Saliba G, Shilling J, Suski K, Tomlinson J, Wang J, Zaveri R and Zelenyuk A (2022) Using aircraft measurements to characterize subgrid-scale variability of aerosol properties near the Atmospheric Radiation Measurement Southern Great Plains site, Atmospheric Chemistry and Physics, 10.5194/acp-22-11217-2022, 22:17, (11217-11238)

Xue Z, Shen F, Li J, Liu X, Wang J, Wang G, Liu K, Chen W, Gao X and Tan T (2022) A MEMS modulator-based dual-channel mid-infrared laser heterodyne radiometer for simultaneous remote sensing of atmospheric CH 4 , H 2 O and N 2 O , Optics Express, 10.1364/OE.469271, 30:18, (31828), Online publication date: 29-Aug-2022.

Bednarz E, Hossaini R, Chipperfield M, Abraham N and Braesicke P (2022) Atmospheric impacts of chlorinated very short-lived substances over the recent past – Part 1: Stratospheric chlorine budget and the role of transport, Atmospheric Chemistry and Physics, 10.5194/acp-22-10657-2022, 22:16, (10657-10676)

Belikov D, Saitoh N and Patra P (2022) An Analysis of Interhemispheric Transport Pathways Based on Three‐Dimensional Methane Data by GOSAT Observations and Model Simulations, Journal of Geophysical Research: Atmospheres, 10.1029/2021JD035688, 127:14, Online publication date: 27-Jul-2022.

Chandra N, Patra P, Niwa Y, Ito A, Iida Y, Goto D, Morimoto S, Kondo M, Takigawa M, Hajima T and Watanabe M (2022) Estimated regional CO 2 flux and uncertainty based on an ensemble of atmospheric CO 2 inversions , Atmospheric Chemistry and Physics, 10.5194/acp-22-9215-2022, 22:14, (9215-9243)

Matsui H, Mori T, Ohata S, Moteki N, Oshima N, Goto-Azuma K, Koike M and Kondo Y (2022) Contrasting source contributions of Arctic black carbon to atmospheric concentrations, deposition flux, and atmospheric and snow radiative effects, Atmospheric Chemistry and Physics, 10.5194/acp-22-8989-2022, 22:13, (8989-9009)

Jiang F, Ju W, He W, Wu M, Wang H, Wang J, Jia M, Feng S, Zhang L and Chen J (2022) A 10-year global monthly averaged terrestrial net ecosystem exchange dataset inferred from the ACOS GOSAT v9 XCO 2 retrievals (GCAS2021) , Earth System Science Data, 10.5194/essd-14-3013-2022, 14:7, (3013-3037)

Tribby A, Bois J, Montzka S, Atlas E, Vimont I, Lan X, Tans P, Elkins J, Blake D and Wennberg P (2022) Hydrocarbon Tracers Suggest Methane Emissions from Fossil Sources Occur Predominately Before Gas Processing and That Petroleum Plays Are a Significant Source, Environmental Science & Technology, 10.1021/acs.est.2c00927, 56:13, (9623-9631), Online publication date: 5-Jul-2022.

Liang Q, Nevison C, Dlugokencky E, Hall B and Dutton G (2022) 3‐D Atmospheric Modeling of the Global Budget of N 2 O and Its Isotopologues for 1980–2019: The Impact of Anthropogenic Emissions , Global Biogeochemical Cycles, 10.1029/2021GB007202, 36:7, Online publication date: 1-Jul-2022.

Payne V, Kulawik S, Fischer E, Brewer J, Huey L, Miyazaki K, Worden J, Bowman K, Hintsa E, Moore F, Elkins J and Juncosa Calahorrano J (2022) Satellite measurements of peroxyacetyl nitrate from the Cross-Track Infrared Sounder: comparison with ATom aircraft measurements, Atmospheric Measurement Techniques, 10.5194/amt-15-3497-2022, 15:11, (3497-3511)

Treadaway V, Atlas E, Schauffler S, Navarro M, Ueyama R, Pfister L, Thornberry T, Rollins A, Elkins J, Moore F and Rosenlof K (2022) Long-range transport of Asian emissions to the West Pacific tropical tropopause layer, Journal of Atmospheric Chemistry, 10.1007/s10874-022-09430-7, 79:2, (81-100), Online publication date: 1-Jun-2022.

Ishidoya S, Tsuboi K, Niwa Y, Matsueda H, Murayama S, Ishijima K and Saito K (2022) Spatiotemporal variations of the δ (O 2 ∕ N 2 ), CO 2 and δ (APO) in the troposphere over the western North Pacific , Atmospheric Chemistry and Physics, 10.5194/acp-22-6953-2022, 22:10, (6953-6970)

Denning A (2022) Where Has All the Carbon Gone?, Annual Review of Earth and Planetary Sciences, 10.1146/annurev-earth-032320-092010, 50:1, (55-78), Online publication date: 31-May-2022.

Deeter M, Francis G, Gille J, Mao D, Martínez-Alonso S, Worden H, Ziskin D, Drummond J, Commane R, Diskin G and McKain K (2022) The MOPITT Version 9 CO product: sampling enhancements and validation, Atmospheric Measurement Techniques, 10.5194/amt-15-2325-2022, 15:8, (2325-2344)

Liu M, Matsui H, Hamilton D, Lamb K, Rathod S, Schwarz J and Mahowald N (2022) The underappreciated role of anthropogenic sources in atmospheric soluble iron flux to the Southern Ocean, npj Climate and Atmospheric Science, 10.1038/s41612-022-00250-w, 5:1

Chen C, Ma P, Chen L, Zhang Y, Zhou C, Zhao S, Zhang L and Wang Z (2022) Nitrous Oxide Profile Retrievals from Atmospheric Infrared Sounder and Validation, Atmosphere, 10.3390/atmos13040619, 13:4, (619)

Chalinel R, Attié J, Ricaud P, Vidot J, Kangah Y, Hauglustaine D and Thompson R (2022) Evaluation and Global-Scale Observation of Nitrous Oxide from IASI on Metop-A, Remote Sensing, 10.3390/rs14061403, 14:6, (1403)

Hannigan J, Ortega I, Shams S, Blumenstock T, Campbell J, Conway S, Flood V, Garcia O, Griffith D, Grutter M, Hase F, Jeseck P, Jones N, Mahieu E, Makarova M, De Mazière M, Morino I, Murata I, Nagahama T, Nakijima H, Notholt J, Palm M, Poberovskii A, Rettinger M, Robinson J, Röhling A, Schneider M, Servais C, Smale D, Stremme W, Strong K, Sussmann R, Te Y, Vigouroux C and Wizenberg T (2022) Global Atmospheric OCS Trend Analysis From 22 NDACC Stations, Journal of Geophysical Research: Atmospheres, 10.1029/2021JD035764, 127:4, Online publication date: 27-Feb-2022.

Remaud M, Chevallier F, Maignan F, Belviso S, Berchet A, Parouffe A, Abadie C, Bacour C, Lennartz S and Peylin P (2022) Plant gross primary production, plant respiration and carbonyl sulfide emissions over the globe inferred by atmospheric inverse modelling, Atmospheric Chemistry and Physics, 10.5194/acp-22-2525-2022, 22:4, (2525-2552)

Schneider M, Ertl B, Diekmann C, Khosrawi F, Weber A, Hase F, Höpfner M, García O, Sepúlveda E and Kinnison D (2022) Design and description of the MUSICA IASI full retrieval product, Earth System Science Data, 10.5194/essd-14-709-2022, 14:2, (709-742)

Zhang L, Davis K, Schuh A, Jacobson A, Pal S, Cui Y, Baker D, Crowell S, Chevallier F, Remaud M, Liu J, Weir B, Philip S, Johnson M, Deng F and Basu S (2022) Multi‐Season Evaluation of CO 2 Weather in OCO‐2 MIP Models , Journal of Geophysical Research: Atmospheres, 10.1029/2021JD035457, 127:2, Online publication date: 27-Jan-2022.

Tan H, Zhang L, Lu X, Zhao Y, Yao B, Parker R and Boesch H (2022) An integrated analysis of contemporary methane emissions and concentration trends over China using in situ and satellite observations and model simulations, Atmospheric Chemistry and Physics, 10.5194/acp-22-1229-2022, 22:2, (1229-1249)

Voshtani S, Ménard R, Walker T and Hakami A (2022) Assimilation of GOSAT Methane in the Hemispheric CMAQ; Part II: Results Using Optimal Error Statistics, Remote Sensing, 10.3390/rs14020375, 14:2, (375)

PATRA P, DLUGOKENCKY E, ELKINS J, DUTTON G, TOHJIMA Y, SASAKAWA M, ITO A, WEISS R, MANIZZA M, KRUMMEL P, PRINN R, O'DOHERTY S, BIANCHI D, NEVISON C, SOLAZZO E, LEE H, JOO S, KORT E, MAITY S and TAKIGAWA M (2022) Forward and Inverse Modelling of Atmospheric Nitrous Oxide Using MIROC4-Atmospheric Chemistry-Transport Model MIROC4を基にした化学輸送モデルと逆解法とを用いた大気中一酸化二窒素の動態解析, Journal of the Meteorological Society of Japan. Ser. II, 10.2151/jmsj.2022-018, 100:2, (361-386), .

Long M, Stephens B, McKain K, Sweeney C, Keeling R, Kort E, Morgan E, Bent J, Chandra N, Chevallier F, Commane R, Daube B, Krummel P, Loh Z, Luijkx I, Munro D, Patra P, Peters W, Ramonet M, Rödenbeck C, Stavert A, Tans P and Wofsy S (2021) Strong Southern Ocean carbon uptake evident in airborne observations, Science, 10.1126/science.abi4355, 374:6572, (1275-1280), Online publication date: 3-Dec-2021.

Hintsa E, Moore F, Hurst D, Dutton G, Hall B, Nance J, Miller B, Montzka S, Wolton L, McClure-Begley A, Elkins J, Hall E, Jordan A, Rollins A, Thornberry T, Watts L, Thompson C, Peischl J, Bourgeois I, Ryerson T, Daube B, Gonzalez Ramos Y, Commane R, Santoni G, Pittman J, Wofsy S, Kort E, Diskin G and Bui T (2021) UAS Chromatograph for Atmospheric Trace Species (UCATS) – a versatile instrument for trace gas measurements on airborne platforms, Atmospheric Measurement Techniques, 10.5194/amt-14-6795-2021, 14:10, (6795-6819)

Orbe C, Waugh D, Montzka S, Dlugokencky E, Strahan S, Steenrod S, Strode S, Elkins J, Hall B, Sweeney C, Hintsa E, Moore F and Penafiel E (2021) Tropospheric Age‐of‐Air: Influence of SF 6 Emissions on Recent Surface Trends and Model Biases , Journal of Geophysical Research: Atmospheres, 10.1029/2021JD035451, 126:19, Online publication date: 16-Oct-2021.

Brock C, Froyd K, Dollner M, Williamson C, Schill G, Murphy D, Wagner N, Kupc A, Jimenez J, Campuzano-Jost P, Nault B, Schroder J, Day D, Price D, Weinzierl B, Schwarz J, Katich J, Wang S, Zeng L, Weber R, Dibb J, Scheuer E, Diskin G, DiGangi J, Bui T, Dean-Day J, Thompson C, Peischl J, Ryerson T, Bourgeois I, Daube B, Commane R and Wofsy S (2021) Ambient aerosol properties in the remote atmosphere from global-scale in situ measurements, Atmospheric Chemistry and Physics, 10.5194/acp-21-15023-2021, 21:19, (15023-15063)

Guo H, Flynn C, Prather M, Strode S, Steenrod S, Emmons L, Lacey F, Lamarque J, Fiore A, Correa G, Murray L, Wolfe G, St. Clair J, Kim M, Crounse J, Diskin G, DiGangi J, Daube B, Commane R, McKain K, Peischl J, Ryerson T, Thompson C, Hanisco T, Blake D, Blake N, Apel E, Hornbrook R, Elkins J, Hintsa E, Moore F and Wofsy S (2021) Heterogeneity and chemical reactivity of the remote troposphere defined by aircraft measurements, Atmospheric Chemistry and Physics, 10.5194/acp-21-13729-2021, 21:18, (13729-13746)

Humphries R, Keywood M, Gribben S, McRobert I, Ward J, Selleck P, Taylor S, Harnwell J, Flynn C, Kulkarni G, Mace G, Protat A, Alexander S and McFarquhar G (2021) Southern Ocean latitudinal gradients of cloud condensation nuclei, Atmospheric Chemistry and Physics, 10.5194/acp-21-12757-2021, 21:16, (12757-12782)

Gonzalez Y, Commane R, Manninen E, Daube B, Schiferl L, McManus J, McKain K, Hintsa E, Elkins J, Montzka S, Sweeney C, Moore F, Jimenez J, Campuzano Jost P, Ryerson T, Bourgeois I, Peischl J, Thompson C, Ray E, Wennberg P, Crounse J, Kim M, Allen H, Newman P, Stephens B, Apel E, Hornbrook R, Nault B, Morgan E and Wofsy S (2021) Impact of stratospheric air and surface emissions on tropospheric nitrous oxide during ATom, Atmospheric Chemistry and Physics, 10.5194/acp-21-11113-2021, 21:14, (11113-11132)

Stanevich I, Jones D, Strong K, Keller M, Henze D, Parker R, Boesch H, Wunch D, Notholt J, Petri C, Warneke T, Sussmann R, Schneider M, Hase F, Kivi R, Deutscher N, Velazco V, Walker K and Deng F (2021) Characterizing model errors in chemical transport modeling of methane: using GOSAT XCH 4 data with weak-constraint four-dimensional variational data assimilation , Atmospheric Chemistry and Physics, 10.5194/acp-21-9545-2021, 21:12, (9545-9572)

Huang Y, Siems S and Manton M (2021) Wintertime In Situ Cloud Microphysical Properties of Mixed‐Phase Clouds Over the Southern Ocean, Journal of Geophysical Research: Atmospheres, 10.1029/2021JD034832, 126:11, Online publication date: 16-Jun-2021.

Cho C, Schwarz J, Perring A, Lamb K, Kondo Y, Park J, Park D, Shim K, Park J, Park R, Lee M, Song C and Kim S (2021) Light-absorption enhancement of black carbon in the Asian outflow inferred from airborne SP2 and in-situ measurements during KORUS-AQ, Science of The Total Environment, 10.1016/j.scitotenv.2021.145531, 773, (145531), Online publication date: 1-Jun-2021.

Müller A, Tanimoto H, Sugita T, Machida T, Nakaoka S, Patra P, Laughner J and Crisp D (2021) New approach to evaluate satellite-derived XCO 2 over oceans by integrating ship and aircraft observations , Atmospheric Chemistry and Physics, 10.5194/acp-21-8255-2021, 21:10, (8255-8271)

Asher E, Hills A, Hornbrook R, Shertz S, Gabbard S, Stephens B, Helmig D and Apel E (2021) Unpiloted Aircraft System Instrument for the Rapid Collection of Whole Air Samples and Measurements for Environmental Monitoring and Air Quality Studies, Environmental Science & Technology, 10.1021/acs.est.0c07213, 55:9, (5657-5667), Online publication date: 4-May-2021.

Roche S, Strong K, Wunch D, Mendonca J, Sweeney C, Baier B, Biraud S, Laughner J, Toon G and Connor B (2021) Retrieval of atmospheric CO 2 vertical profiles from ground-based near-infrared spectra , Atmospheric Measurement Techniques, 10.5194/amt-14-3087-2021, 14:4, (3087-3118)

Smith M, Carlstad J, Hunter P, Randazzo J and Boering K (2021) Nitrous Oxide Formation by Corona Discharge: Isotopic Composition Measurements and Atmospheric Applications, Journal of Geophysical Research: Atmospheres, 10.1029/2020JD033927, 126:8, Online publication date: 27-Apr-2021.

Liu M and Matsui H (2021) Aerosol radiative forcings induced by substantial changes in anthropogenic emissions in China from 2008 to 2016, Atmospheric Chemistry and Physics, 10.5194/acp-21-5965-2021, 21:8, (5965-5982)

Stephens B, Morgan E, Bent J, Keeling R, Watt A, Shertz S and Daube B (2021) Airborne measurements of oxygen concentration from the surface to the lower stratosphere and pole to pole, Atmospheric Measurement Techniques, 10.5194/amt-14-2543-2021, 14:3, (2543-2574)

Naus S, Montzka S, Patra P and Krol M (2021) A three-dimensional-model inversion of methyl chloroform to constrain the atmospheric oxidative capacity, Atmospheric Chemistry and Physics, 10.5194/acp-21-4809-2021, 21:6, (4809-4824)

Ma J, Kooijmans L, Cho A, Montzka S, Glatthor N, Worden J, Kuai L, Atlas E and Krol M (2021) Inverse modelling of carbonyl sulfide: implementation, evaluation and implications for the global budget, Atmospheric Chemistry and Physics, 10.5194/acp-21-3507-2021, 21:5, (3507-3529)

Kang L, Marchand R and Smith W (2021) Evaluation of MODIS and Himawari‐8 Low Clouds Retrievals Over the Southern Ocean With In Situ Measurements From the SOCRATES Campaign, Earth and Space Science, 10.1029/2020EA001397, 8:3, Online publication date: 1-Mar-2021.

Gałkowski M, Jordan A, Rothe M, Marshall J, Koch F, Chen J, Agusti-Panareda A, Fix A and Gerbig C (2021) In situ observations of greenhouse gases over Europe during the CoMet 1.0 campaign aboard the HALO aircraft, Atmospheric Measurement Techniques, 10.5194/amt-14-1525-2021, 14:2, (1525-1544)

Liu M and Matsui H (2021) Improved Simulations of Global Black Carbon Distributions by Modifying Wet Scavenging Processes in Convective and Mixed‐Phase Clouds, Journal of Geophysical Research: Atmospheres, 10.1029/2020JD033890, 126:3, Online publication date: 16-Feb-2021.

Liu J, Baskaran L, Bowman K, Schimel D, Bloom A, Parazoo N, Oda T, Carroll D, Menemenlis D, Joiner J, Commane R, Daube B, Gatti L, McKain K, Miller J, Stephens B, Sweeney C and Wofsy S (2021) Carbon Monitoring System Flux Net Biosphere Exchange 2020 (CMS-Flux NBE 2020), Earth System Science Data, 10.5194/essd-13-299-2021, 13:2, (299-330)

Patnaude R, Diao M, Liu X and Chu S (2021) Effects of thermodynamics, dynamics and aerosols on cirrus clouds based on in situ observations and NCAR CAM6, Atmospheric Chemistry and Physics, 10.5194/acp-21-1835-2021, 21:3, (1835-1859)

Barret B, Gouzenes Y, Le Flochmoen E and Ferrant S (2021) Retrieval of Metop-A/IASI N2O Profiles and Validation with NDACC FTIR Data, Atmosphere, 10.3390/atmos12020219, 12:2, (219)

Jin Y, Keeling R, Morgan E, Ray E, Parazoo N and Stephens B (2021) A mass-weighted isentropic coordinate for mapping chemical tracers and computing atmospheric inventories, Atmospheric Chemistry and Physics, 10.5194/acp-21-217-2021, 21:1, (217-238)

Liu J, Wennberg P, Parazoo N, Yin Y and Frankenberg C (2020) Observational Constraints on the Response of High‐Latitude Northern Forests to Warming, AGU Advances, 10.1029/2020AV000228, 1:4, Online publication date: 1-Dec-2020.

Adams M, Tarn M, Sanchez‐Marroquin A, Porter G, O'Sullivan D, Harrison A, Cui Z, Vergara‐Temprado J, Carotenuto F, Holden M, Daily M, Whale T, Sikora S, Burke I, Shim J, McQuaid J and Murray B (2020) A Major Combustion Aerosol Event Had a Negligible Impact on the Atmospheric Ice‐Nucleating Particle Population, Journal of Geophysical Research: Atmospheres, 10.1029/2020JD032938, 125:22, Online publication date: 27-Nov-2020.

Zhuravleva T, Artyushina A, Vinogradova A and Voronina Y (2021) Black Carbon in the Near-Surface Atmosphere Far Away from Emission Sources: Comparison of Measurements and MERRA-2 Reanalysis Data, Atmospheric and Oceanic Optics, 10.1134/S1024856020060251, 33:6, (591-601), Online publication date: 1-Nov-2020.

Yang H, Feng G, Xiang R, Xu Y, Qin Y and Li S (2020) Spatio-Temporal Validation of AIRS CO2 Observations Using GAW, HIPPO and TCCON, Remote Sensing, 10.3390/rs12213583, 12:21, (3583)

Birner B, Chipperfield M, Morgan E, Stephens B, Linz M, Feng W, Wilson C, Bent J, Wofsy S, Severinghaus J and Keeling R (2020) Gravitational separation of Ar∕N 2 and age of air in the lowermost stratosphere in airborne observations and a chemical transport model , Atmospheric Chemistry and Physics, 10.5194/acp-20-12391-2020, 20:21, (12391-12408)

Nalli N, Tan C, Warner J, Divakarla M, Gambacorta A, Wilson M, Zhu T, Wang T, Wei Z, Pryor K, Kalluri S, Zhou L, Sweeney C, Baier B, McKain K, Wunch D, Deutscher N, Hase F, Iraci L, Kivi R, Morino I, Notholt J, Ohyama H, Pollard D, Té Y, Velazco V, Warneke T, Sussmann R and Rettinger M (2020) Validation of Carbon Trace Gas Profile Retrievals from the NOAA-Unique Combined Atmospheric Processing System for the Cross-Track Infrared Sounder, Remote Sensing, 10.3390/rs12193245, 12:19, (3245)

Bourgeois I, Peischl J, Thompson C, Aikin K, Campos T, Clark H, Commane R, Daube B, Diskin G, Elkins J, Gao R, Gaudel A, Hintsa E, Johnson B, Kivi R, McKain K, Moore F, Parrish D, Querel R, Ray E, Sánchez R, Sweeney C, Tarasick D, Thompson A, Thouret V, Witte J, Wofsy S and Ryerson T (2020) Global-scale distribution of ozone in the remote troposphere from the ATom and HIPPO airborne field missions, Atmospheric Chemistry and Physics, 10.5194/acp-20-10611-2020, 20:17, (10611-10635)

Leaitch W, Kodros J, Willis M, Hanna S, Schulz H, Andrews E, Bozem H, Burkart J, Hoor P, Kolonjari F, Ogren J, Sharma S, Si M, von Salzen K, Bertram A, Herber A, Abbatt J and Pierce J (2020) Vertical profiles of light absorption and scattering associated with black carbon particle fractions in the springtime Arctic above 79° N, Atmospheric Chemistry and Physics, 10.5194/acp-20-10545-2020, 20:17, (10545-10563)

Lin X, Rogers B, Sweeney C, Chevallier F, Arshinov M, Dlugokencky E, Machida T, Sasakawa M, Tans P and Keppel-Aleks G (2020) Siberian and temperate ecosystems shape Northern Hemisphere atmospheric CO 2 seasonal amplification , Proceedings of the National Academy of Sciences, 10.1073/pnas.1914135117, 117:35, (21079-21087), Online publication date: 1-Sep-2020.

Byrne B, Liu J, Lee M, Baker I, Bowman K, Deutscher N, Feist D, Griffith D, Iraci L, Kiel M, Kimball J, Miller C, Morino I, Parazoo N, Petri C, Roehl C, Sha M, Strong K, Velazco V, Wennberg P and Wunch D (2020) Improved Constraints on Northern Extratropical CO 2 Fluxes Obtained by Combining Surface‐Based and Space‐Based Atmospheric CO 2 Measurements , Journal of Geophysical Research: Atmospheres, 10.1029/2019JD032029, 125:15, Online publication date: 16-Aug-2020.

Sun X, Duan M, Gao Y, Han R, Ji D, Zhang W, Chen N, Xia X, Liu H and Huo Y (2020) In situ measurement of CO 2 and CH 4 from aircraft over northeast China and comparison with OCO-2 data , Atmospheric Measurement Techniques, 10.5194/amt-13-3595-2020, 13:7, (3595-3607)

Travis K, Heald C, Allen H, Apel E, Arnold S, Blake D, Brune W, Chen X, Commane R, Crounse J, Daube B, Diskin G, Elkins J, Evans M, Hall S, Hintsa E, Hornbrook R, Kasibhatla P, Kim M, Luo G, McKain K, Millet D, Moore F, Peischl J, Ryerson T, Sherwen T, Thames A, Ullmann K, Wang X, Wennberg P, Wolfe G and Yu F (2020) Constraining remote oxidation capacity with ATom observations, Atmospheric Chemistry and Physics, 10.5194/acp-20-7753-2020, 20:13, (7753-7781)

Fung I (2020) In Pursuit, Annual Review of Earth and Planetary Sciences, 10.1146/annurev-earth-072519-055956, 48:1, (1-20), Online publication date: 30-May-2020.

Patnaude R and Diao M (2020) Aerosol Indirect Effects on Cirrus Clouds Based on Global Aircraft Observations, Geophysical Research Letters, 10.1029/2019GL086550, 47:10, Online publication date: 28-May-2020.

Haverd V, Smith B, Canadell J, Cuntz M, Mikaloff‐Fletcher S, Farquhar G, Woodgate W, Briggs P and Trudinger C (2020) Higher than expected CO 2 fertilization inferred from leaf to global observations , Global Change Biology, 10.1111/gcb.14950, 26:4, (2390-2402), Online publication date: 1-Apr-2020.

Wu T, Zhang F, Zhang J, Jie W, Zhang Y, Wu F, Li L, Yan J, Liu X, Lu X, Tan H, Zhang L, Wang J and Hu A (2020) Beijing Climate Center Earth System Model version 1 (BCC-ESM1): model description and evaluation of aerosol simulations, Geoscientific Model Development, 10.5194/gmd-13-977-2020, 13:3, (977-1005)

Zhang A, Wang Y, Zhang Y, Weber R, Song Y, Ke Z and Zou Y (2020) Modeling the global radiative effect of brown carbon: a potentially larger heating source in the tropical free troposphere than black carbon, Atmospheric Chemistry and Physics, 10.5194/acp-20-1901-2020, 20:4, (1901-1920)

He J, Naik V, Horowitz L, Dlugokencky E and Thoning K (2020) Investigation of the global methane budget over 1980–2017 using GFDL-AM4.1, Atmospheric Chemistry and Physics, 10.5194/acp-20-805-2020, 20:2, (805-827)

Schuck T, Blank A, Rittmeier E, Williams J, Brenninkmeijer C, Engel A and Zahn A (2020) Stability of halocarbons in air samples stored in stainless- steel canisters, Atmospheric Measurement Techniques, 10.5194/amt-13-73-2020, 13:1, (73-84)

Zhang M, Liu X, Diao M, D'Alessandro J, Wang Y, Wu C, Zhang D, Wang Z and Xie S (2019) Impacts of Representing Heterogeneous Distribution of Cloud Liquid and Ice on Phase Partitioning of Arctic Mixed‐Phase Clouds with NCAR CAM5, Journal of Geophysical Research: Atmospheres, 10.1029/2019JD030502, 124:23, (13071-13090), Online publication date: 16-Dec-2019.

Asher E, Hornbrook R, Stephens B, Kinnison D, Morgan E, Keeling R, Atlas E, Schauffler S, Tilmes S, Kort E, Hoecker-Martínez M, Long M, Lamarque J, Saiz-Lopez A, McKain K, Sweeney C, Hills A and Apel E (2019) Novel approaches to improve estimates of short-lived halocarbon emissions during summer from the Southern Ocean using airborne observations, Atmospheric Chemistry and Physics, 10.5194/acp-19-14071-2019, 19:22, (14071-14090)

Schmale J, Baccarini A, Thurnherr I, Henning S, Efraim A, Regayre L, Bolas C, Hartmann M, Welti A, Lehtipalo K, Aemisegger F, Tatzelt C, Landwehr S, Modini R, Tummon F, Johnson J, Harris N, Schnaiter M, Toffoli A, Derkani M, Bukowiecki N, Stratmann F, Dommen J, Baltensperger U, Wernli H, Rosenfeld D, Gysel-Beer M and Carslaw K Overview of the Antarctic Circumnavigation Expedition: Study of Preindustrial-like Aerosols and Their Climate Effects (ACE-SPACE), Bulletin of the American Meteorological Society, 10.1175/BAMS-D-18-0187.1, 100:11, (2260-2283)

Steffen J, Bernath P and Boone C (2019) Trends in halogen-containing molecules measured by the Atmospheric Chemistry Experiment (ACE) satellite, Journal of Quantitative Spectroscopy and Radiative Transfer, 10.1016/j.jqsrt.2019.106619, 238, (106619), Online publication date: 1-Nov-2019.

Bernath P, Boone C, Fernando A and Jones S (2019) Low altitude CO2 from the Atmospheric Chemistry Experiment (ACE) satellite, Journal of Quantitative Spectroscopy and Radiative Transfer, 10.1016/j.jqsrt.2019.06.007, 238, (106528), Online publication date: 1-Nov-2019.

Ouchi M, Matsumi Y, Nakayama T, Shimizu K, Sawada T, Machida T, Matsueda H, Sawa Y, Morino I, Uchino O, Tanaka T and Imasu R (2019) Development of a balloon-borne instrument for CO 2 vertical profile observations in the troposphere , Atmospheric Measurement Techniques, 10.5194/amt-12-5639-2019, 12:10, (5639-5653)

Torres A, Keppel‐Aleks G, Doney S, Fendrock M, Luis K, De Mazière M, Hase F, Petri C, Pollard D, Roehl C, Sussmann R, Velazco V, Warneke T and Wunch D (2019) A Geostatistical Framework for Quantifying the Imprint of Mesoscale Atmospheric Transport on Satellite Trace Gas Retrievals, Journal of Geophysical Research: Atmospheres, 10.1029/2018JD029933, 124:17-18, (9773-9795), Online publication date: 1-Sep-2019.

Deeter M, Edwards D, Francis G, Gille J, Mao D, Martínez-Alonso S, Worden H, Ziskin D and Andreae M (2019) Radiance-based retrieval bias mitigation for the MOPITT instrument: the version 8 product, Atmospheric Measurement Techniques, 10.5194/amt-12-4561-2019, 12:8, (4561-4580)

Crowell S, Baker D, Schuh A, Basu S, Jacobson A, Chevallier F, Liu J, Deng F, Feng L, McKain K, Chatterjee A, Miller J, Stephens B, Eldering A, Crisp D, Schimel D, Nassar R, O'Dell C, Oda T, Sweeney C, Palmer P and Jones D (2019) The 2015–2016 carbon cycle as seen from OCO-2 and the global in situ network, Atmospheric Chemistry and Physics, 10.5194/acp-19-9797-2019, 19:15, (9797-9831)

Maasakkers J, Jacob D, Sulprizio M, Scarpelli T, Nesser H, Sheng J, Zhang Y, Hersher M, Bloom A, Bowman K, Worden J, Janssens-Maenhout G and Parker R (2019) Global distribution of methane emissions, emission trends, and OH concentrations and trends inferred from an inversion of GOSAT satellite data for 2010–2015, Atmospheric Chemistry and Physics, 10.5194/acp-19-7859-2019, 19:11, (7859-7881)

Kanaya Y, Miyazaki K, Taketani F, Miyakawa T, Takashima H, Komazaki Y, Pan X, Kato S, Sudo K, Sekiya T, Inoue J, Sato K and Oshima K (2019) Ozone and carbon monoxide observations over open oceans on R/V Mirai from 67° S to 75° N during 2012 to 2017: testing global chemical reanalysis in terms of Arctic processes, low ozone levels at low latitudes, and pollution transport , Atmospheric Chemistry and Physics, 10.5194/acp-19-7233-2019, 19:11, (7233-7254)

Stevens B, Ament F, Bony S, Crewell S, Ewald F, Gross S, Hansen A, Hirsch L, Jacob M, Kölling T, Konow H, Mayer B, Wendisch M, Wirth M, Wolf K, Bakan S, Bauer-Pfundstein M, Brueck M, Delanoë J, Ehrlich A, Farrell D, Forde M, Gödde F, Grob H, Hagen M, Jäkel E, Jansen F, Klepp C, Klingebiel M, Mech M, Peters G, Rapp M, Wing A and Zinner T A High-Altitude Long-Range Aircraft Configured as a Cloud Observatory: The NARVAL Expeditions, Bulletin of the American Meteorological Society, 10.1175/BAMS-D-18-0198.1, 100:6, (1061-1077)

Jiang X and Yung Y (2019) Global Patterns of Carbon Dioxide Variability from Satellite Observations, Annual Review of Earth and Planetary Sciences, 10.1146/annurev-earth-053018-060447, 47:1, (225-245), Online publication date: 30-May-2019.

Wunch D, Jones D, Toon G, Deutscher N, Hase F, Notholt J, Sussmann R, Warneke T, Kuenen J, Denier van der Gon H, Fisher J and Maasakkers J (2019) Emissions of methane in Europe inferred by total column measurements, Atmospheric Chemistry and Physics, 10.5194/acp-19-3963-2019, 19:6, (3963-3980)

Ying N and Ye Q (2019) Impact of ENSO on variability of global CO 2 concentration retrievals from GOSAT and AIRS , IOP Conference Series: Earth and Environmental Science, 10.1088/1755-1315/237/2/022009, 237, (022009)

Hossaini R, Atlas E, Dhomse S, Chipperfield M, Bernath P, Fernando A, Mühle J, Leeson A, Montzka S, Feng W, Harrison J, Krummel P, Vollmer M, Reimann S, O'Doherty S, Young D, Maione M, Arduini J and Lunder C (2019) Recent Trends in Stratospheric Chlorine From Very Short‐Lived Substances, Journal of Geophysical Research: Atmospheres, 10.1029/2018JD029400, 124:4, (2318-2335), Online publication date: 27-Feb-2019.

Xu J, Zhang J, Liu J, Yi K, Xiang S, Hu X, Wang Y, Tao S and Ban-Weiss G (2019) Influence of cloud microphysical processes on black carbon wet removal, global distributions, and radiative forcing, Atmospheric Chemistry and Physics, 10.5194/acp-19-1587-2019, 19:3, (1587-1603)

Yu P, Froyd K, Portmann R, Toon O, Freitas S, Bardeen C, Brock C, Fan T, Gao R, Katich J, Kupc A, Liu S, Maloney C, Murphy D, Rosenlof K, Schill G, Schwarz J and Williamson C (2019) Efficient In‐Cloud Removal of Aerosols by Deep Convection, Geophysical Research Letters, 10.1029/2018GL080544, 46:2, (1061-1069), Online publication date: 28-Jan-2019.

Zhang X, Jones D, Keller M, Walker T, Jiang Z, Henze D, Worden H, Bourassa A, Degenstein D and Rochon Y (2019) Quantifying Emissions of CO and NO x Using Observations From MOPITT, OMI, TES, and OSIRIS , Journal of Geophysical Research: Atmospheres, 10.1029/2018JD028670, 124:2, (1170-1193), Online publication date: 27-Jan-2019.

Gaubert B, Stephens B, Basu S, Chevallier F, Deng F, Kort E, Patra P, Peters W, Rödenbeck C, Saeki T, Schimel D, Van der Laan-Luijkx I, Wofsy S and Yin Y (2019) Global atmospheric CO 2 inverse models converging on neutral tropical land exchange, but disagreeing on fossil fuel and atmospheric growth rate , Biogeosciences, 10.5194/bg-16-117-2019, 16:1, (117-134)

Mendonca J, Strong K, Wunch D, Toon G, Long D, Hodges J, Sironneau V and Franklin J (2019) Using a speed-dependent Voigt line shape to retrieve O 2 from Total Carbon Column Observing Network solar spectra to improve measurements of XCO 2 , Atmospheric Measurement Techniques, 10.5194/amt-12-35-2019, 12:1, (35-50)

Lund M, Myhre G, Haslerud A, Skeie R, Griesfeller J, Platt S, Kumar R, Myhre C and Schulz M (2018) Concentrations and radiative forcing of anthropogenic aerosols from 1750 to 2014 simulated with the Oslo CTM3 and CEDS emission inventory, Geoscientific Model Development, 10.5194/gmd-11-4909-2018, 11:12, (4909-4931)

Gvakharia A, Kort E, Smith M and Conley S (2018) Testing and evaluation of a new airborne system for continuous N 2 O, CO 2 , CO, and H 2 O measurements: the Frequent Calibration High-performance Airborne Observation System (FCHAOS) , Atmospheric Measurement Techniques, 10.5194/amt-11-6059-2018, 11:11, (6059-6074)

Lund M, Samset B, Skeie R, Watson-Parris D, Katich J, Schwarz J and Weinzierl B (2018) Short Black Carbon lifetime inferred from a global set of aircraft observations, npj Climate and Atmospheric Science, 10.1038/s41612-018-0040-x, 1:1

Kirkevåg A, Grini A, Olivié D, Seland Ø, Alterskjær K, Hummel M, Karset I, Lewinschal A, Liu X, Makkonen R, Bethke I, Griesfeller J, Schulz M and Iversen T (2018) A production-tagged aerosol module for Earth system models, OsloAero5.3 – extensions and updates for CAM5.3-Oslo, Geoscientific Model Development, 10.5194/gmd-11-3945-2018, 11:10, (3945-3982)

Polavarapu S, Deng F, Byrne B, Jones D and Neish M (2018) A comparison of posterior atmospheric CO 2 adjustments obtained from in situ and GOSAT constrained flux inversions , Atmospheric Chemistry and Physics, 10.5194/acp-18-12011-2018, 18:16, (12011-12044)

Wang J, Kawa S, Collatz G, Sasakawa M, Gatti L, Machida T, Liu Y and Manyin M (2018) A global synthesis inversion analysis of recent variability in CO 2 fluxes using GOSAT and in situ observations , Atmospheric Chemistry and Physics, 10.5194/acp-18-11097-2018, 18:15, (11097-11124)

Krol M, de Bruine M, Killaars L, Ouwersloot H, Pozzer A, Yin Y, Chevallier F, Bousquet P, Patra P, Belikov D, Maksyutov S, Dhomse S, Feng W and Chipperfield M (2018) Age of air as a diagnostic for transport timescales in global models, Geoscientific Model Development, 10.5194/gmd-11-3109-2018, 11:8, (3109-3130)

García O, Schneider M, Ertl B, Sepúlveda E, Borger C, Diekmann C, Wiegele A, Hase F, Barthlott S, Blumenstock T, Raffalski U, Gómez-Peláez A, Steinbacher M, Ries L and de Frutos A (2018) The MUSICA IASI CH 4 and N 2 O products and their comparison to HIPPO, GAW and NDACC FTIR references , Atmospheric Measurement Techniques, 10.5194/amt-11-4171-2018, 11:7, (4171-4215)

Whelan M, Lennartz S, Gimeno T, Wehr R, Wohlfahrt G, Wang Y, Kooijmans L, Hilton T, Belviso S, Peylin P, Commane R, Sun W, Chen H, Kuai L, Mammarella I, Maseyk K, Berkelhammer M, Li K, Yakir D, Zumkehr A, Katayama Y, Ogée J, Spielmann F, Kitz F, Rastogi B, Kesselmeier J, Marshall J, Erkkilä K, Wingate L, Meredith L, He W, Bunk R, Launois T, Vesala T, Schmidt J, Fichot C, Seibt U, Saleska S, Saltzman E, Montzka S, Berry J and Campbell J (2018) Reviews and syntheses: Carbonyl sulfide as a multi-scale tracer for carbon and water cycles, Biogeosciences, 10.5194/bg-15-3625-2018, 15:12, (3625-3657)

Schultz M, Stadtler S, Schröder S, Taraborrelli D, Franco B, Krefting J, Henrot A, Ferrachat S, Lohmann U, Neubauer D, Siegenthaler-Le Drian C, Wahl S, Kokkola H, Kühn T, Rast S, Schmidt H, Stier P, Kinnison D, Tyndall G, Orlando J and Wespes C (2018) The chemistry–climate model ECHAM6.3-HAM2.3-MOZ1.0, Geoscientific Model Development, 10.5194/gmd-11-1695-2018, 11:5, (1695-1723)

Newton R, Vaughan G, Hintsa E, Filus M, Pan L, Honomichl S, Atlas E, Andrews S and Carpenter L (2018) Observations of ozone-poor air in the tropical tropopause layer, Atmospheric Chemistry and Physics, 10.5194/acp-18-5157-2018, 18:7, (5157-5171)

Toon G, Blavier J and Sung K (2018) Measurements of atmospheric ethene by solar absorption FTIR spectrometry, Atmospheric Chemistry and Physics, 10.5194/acp-18-5075-2018, 18:7, (5075-5088)

Yang H, Waugh D and Holzer M (2018) Decoupling the Effects of Transport and Chemical Loss on Tropospheric Composition: A Model Study of Path‐Dependent Lifetimes, Journal of Geophysical Research: Atmospheres, 10.1002/2017JD027871, 123:4, (2320-2335), Online publication date: 27-Feb-2018.

Badawy B, Polavarapu S, Jones D, Deng F, Neish M, Melton J, Nassar R and Arora V (2018) Coupling the Canadian Terrestrial Ecosystem Model (CTEM v. 2.0) to Environment and Climate Change Canada's greenhouse gas forecast model (v.107-glb), Geoscientific Model Development, 10.5194/gmd-11-631-2018, 11:2, (631-663)

Wells K, Millet D, Bousserez N, Henze D, Griffis T, Chaliyakunnel S, Dlugokencky E, Saikawa E, Xiang G, Prinn R, O'Doherty S, Young D, Weiss R, Dutton G, Elkins J, Krummel P, Langenfelds R and Steele L (2018) Top-down constraints on global N 2 O emissions at optimal resolution: application of a new dimension reduction technique , Atmospheric Chemistry and Physics, 10.5194/acp-18-735-2018, 18:2, (735-756)

Patra P, Takigawa M, Watanabe S, Chandra N, Ishijima K and Yamashita Y (2018) Improved Chemical Tracer Simulation by MIROC4.0-based Atmospheric Chemistry-Transport Model (MIROC4-ACTM), SOLA, 10.2151/sola.2018-016, 14:0, (91-96), .

Saitoh N, Imasu R, Shiomi K, Kuze A, Nakajima M, Niwa Y, Machida T, Sawa Y, Matsueda H, Tsuboi K and Tsuruta A (2018) CO2 and CH4 observations by the thermal infrared band of GOSAT/TANSO-FTS and GOSAT-1/TANSO-FTS-2 Fourier Transform Spectroscopy, 10.1364/FTS.2018.FW5A.1, 978-1-943580-47-7, (FW5A.1)

Crevoisier C (2018) Use of Hyperspectral Infrared Radiances to Infer Atmospheric Trace Gases Comprehensive Remote Sensing, 10.1016/B978-0-12-409548-9.10396-3, (345-387), .

Lan X, Tans P, Sweeney C, Andrews A, Jacobson A, Crotwell M, Dlugokencky E, Kofler J, Lang P, Thoning K and Wolter S (2017) Gradients of column CO 2 across North America from the NOAA Global Greenhouse Gas Reference Network , Atmospheric Chemistry and Physics, 10.5194/acp-17-15151-2017, 17:24, (15151-15165)

Pollard D, Sherlock V, Robinson J, Deutscher N, Connor B and Shiona H (2017) The Total Carbon Column Observing Network site description for Lauder, New Zealand, Earth System Science Data, 10.5194/essd-9-977-2017, 9:2, (977-992)

Saitoh N, Kimoto S, Sugimura R, Imasu R, Shiomi K, Kuze A, Niwa Y, Machida T, Sawa Y and Matsueda H (2017) Bias assessment of lower and middle tropospheric CO 2 concentrations of GOSAT/TANSO-FTS TIR version 1 product , Atmospheric Measurement Techniques, 10.5194/amt-10-3877-2017, 10:10, (3877-3892)

Ehret G, Bousquet P, Pierangelo C, Alpers M, Millet B, Abshire J, Bovensmann H, Burrows J, Chevallier F, Ciais P, Crevoisier C, Fix A, Flamant P, Frankenberg C, Gibert F, Heim B, Heimann M, Houweling S, Hubberten H, Jöckel P, Law K, Löw A, Marshall J, Agusti-Panareda A, Payan S, Prigent C, Rairoux P, Sachs T, Scholze M and Wirth M (2017) MERLIN: A French-German Space Lidar Mission Dedicated to Atmospheric Methane, Remote Sensing, 10.3390/rs9101052, 9:10, (1052)

Markowicz K, Ritter C, Lisok J, Makuch P, Stachlewska I, Cappelletti D, Mazzola M and Chilinski M (2017) Vertical variability of aerosol single-scattering albedo and equivalent black carbon concentration based on in-situ and remote sensing techniques during the iAREA campaigns in Ny-Ålesund, Atmospheric Environment, 10.1016/j.atmosenv.2017.06.014, 164, (431-447), Online publication date: 1-Sep-2017.

Bailey D, Adkins E and Miller J (2017) An open-path tunable diode laser absorption spectrometer for detection of carbon dioxide at the Bonanza Creek Long-Term Ecological Research Site near Fairbanks, Alaska, Applied Physics B, 10.1007/s00340-017-6814-8, 123:9, Online publication date: 1-Sep-2017.

Corbett A, Jiang X, Xiong X, Kao A and Li L (2017) Modulation of midtropospheric methane by El Niño, Earth and Space Science, 10.1002/2017EA000281, 4:9, (590-596), Online publication date: 1-Sep-2017.

Worden J, Doran G, Kulawik S, Eldering A, Crisp D, Frankenberg C, O'Dell C and Bowman K (2017) Evaluation and attribution of OCO-2 XCO 2 uncertainties , Atmospheric Measurement Techniques, 10.5194/amt-10-2759-2017, 10:7, (2759-2771)

Prather M, Zhu X, Flynn C, Strode S, Rodriguez J, Steenrod S, Liu J, Lamarque J, Fiore A, Horowitz L, Mao J, Murray L, Shindell D and Wofsy S (2017) Global atmospheric chemistry – which air matters, Atmospheric Chemistry and Physics, 10.5194/acp-17-9081-2017, 17:14, (9081-9102)

Deeter M, Edwards D, Francis G, Gille J, Martínez-Alonso S, Worden H and Sweeney C (2017) A climate-scale satellite record for carbon monoxide: the MOPITT Version 7 product, Atmospheric Measurement Techniques, 10.5194/amt-10-2533-2017, 10:7, (2533-2555)

Sayres D, Dobosy R, Healy C, Dumas E, Kochendorfer J, Munster J, Wilkerson J, Baker B and Anderson J (2017) Arctic regional methane fluxes by ecotope as derived using eddy covariance from a low-flying aircraft, Atmospheric Chemistry and Physics, 10.5194/acp-17-8619-2017, 17:13, (8619-8633)

Wunch D, Wennberg P, Osterman G, Fisher B, Naylor B, Roehl C, O'Dell C, Mandrake L, Viatte C, Kiel M, Griffith D, Deutscher N, Velazco V, Notholt J, Warneke T, Petri C, De Maziere M, Sha M, Sussmann R, Rettinger M, Pollard D, Robinson J, Morino I, Uchino O, Hase F, Blumenstock T, Feist D, Arnold S, Strong K, Mendonca J, Kivi R, Heikkinen P, Iraci L, Podolske J, Hillyard P, Kawakami S, Dubey M, Parker H, Sepulveda E, García O, Te Y, Jeseck P, Gunson M, Crisp D and Eldering A (2017) Comparisons of the Orbiting Carbon Observatory-2 (OCO-2) X CO 2 measurements with TCCON , Atmospheric Measurement Techniques, 10.5194/amt-10-2209-2017, 10:6, (2209-2238)

Membrive O, Crevoisier C, Sweeney C, Danis F, Hertzog A, Engel A, Bönisch H and Picon L (2017) AirCore-HR: a high-resolution column sampling to enhance the vertical description of CH 4 and CO 2 , Atmospheric Measurement Techniques, 10.5194/amt-10-2163-2017, 10:6, (2163-2181)

Shen Z, Ming Y, Horowitz L, Ramaswamy V and Lin M (2017) On the Seasonality of Arctic Black Carbon, Journal of Climate, 10.1175/JCLI-D-16-0580.1, 30:12, (4429-4441), Online publication date: 1-Jun-2017.

Lund M, Berntsen T and Samset B (2017) Sensitivity of black carbon concentrations and climate impact to aging and scavenging in OsloCTM2–M7, Atmospheric Chemistry and Physics, 10.5194/acp-17-6003-2017, 17:9, (6003-6022)

Kangah Y, Ricaud P, Attié J, Saitoh N, Hauglustaine D, Wang R, El Amraoui L, Zbinden R and Delon C (2017) Summertime upper tropospheric nitrous oxide over the Mediterranean as a footprint of Asian emissions, Journal of Geophysical Research: Atmospheres, 10.1002/2016JD026119, 122:8, (4746-4759), Online publication date: 27-Apr-2017.

Feng L, Palmer P, Bösch H, Parker R, Webb A, Correia C, Deutscher N, Domingues L, Feist D, Gatti L, Gloor E, Hase F, Kivi R, Liu Y, Miller J, Morino I, Sussmann R, Strong K, Uchino O, Wang J and Zahn A (2017) Consistent regional fluxes of CH 4 and CO 2 inferred from GOSAT proxy XCH 4  : XCO 2 retrievals, 2010–2014 , Atmospheric Chemistry and Physics, 10.5194/acp-17-4781-2017, 17:7, (4781-4797)

Wu C, Liu X, Diao M, Zhang K, Gettelman A, Lu Z, Penner J and Lin Z (2017) Direct comparisons of ice cloud macro- and microphysical properties simulated by the Community Atmosphere Model version 5 with HIPPO aircraft observations, Atmospheric Chemistry and Physics, 10.5194/acp-17-4731-2017, 17:7, (4731-4749)

Ahn E, Huang Y, Chubb T, Baumgardner D, Isaac P, de Hoog M, Siems S and Manton M (2017) In situ observations of wintertime low‐altitude clouds over the Southern Ocean , Quarterly Journal of the Royal Meteorological Society, 10.1002/qj.3011, 143:704, (1381-1394), Online publication date: 1-Apr-2017.

Li Z, Liu J, Mauzerall D, Li X, Fan S, Horowitz L, He C, Yi K and Tao S (2017) A potential large and persistent black carbon forcing over Northern Pacific inferred from satellite observations, Scientific Reports, 10.1038/srep43429, 7:1

Werner B, Stutz J, Spolaor M, Scalone L, Raecke R, Festa J, Colosimo S, Cheung R, Tsai C, Hossaini R, Chipperfield M, Taverna G, Feng W, Elkins J, Fahey D, Gao R, Hintsa E, Thornberry T, Moore F, Navarro M, Atlas E, Daube B, Pittman J, Wofsy S and Pfeilsticker K (2017) Probing the subtropical lowermost stratosphere and the tropical upper troposphere and tropopause layer for inorganic bromine, Atmospheric Chemistry and Physics, 10.5194/acp-17-1161-2017, 17:2, (1161-1186)

Harris N, Carpenter L, Lee J, Vaughan G, Filus M, Jones R, OuYang B, Pyle J, Robinson A, Andrews S, Lewis A, Minaeian J, Vaughan A, Dorsey J, Gallagher M, Le Breton M, Newton R, Percival C, Ricketts H, Bauguitte S, Nott G, Wellpott A, Ashfold M, Flemming J, Butler R, Palmer P, Kaye P, Stopford C, Chemel C, Boesch H, Humpage N, Vick A, MacKenzie A, Hyde R, Angelov P, Meneguz E and Manning A (2017) Coordinated Airborne Studies in the Tropics (CAST), Bulletin of the American Meteorological Society, 10.1175/BAMS-D-14-00290.1, 98:1, (145-162), Online publication date: 1-Jan-2017.

Chipperfield M, Liang Q, Rigby M, Hossaini R, Montzka S, Dhomse S, Feng W, Prinn R, Weiss R, Harth C, Salameh P, Mühle J, O'Doherty S, Young D, Simmonds P, Krummel P, Fraser P, Steele L, Happell J, Rhew R, Butler J, Yvon-Lewis S, Hall B, Nance D, Moore F, Miller B, Elkins J, Harrison J, Boone C, Atlas E and Mahieu E (2016) Model sensitivity studies of the decrease in atmospheric carbon tetrachloride, Atmospheric Chemistry and Physics, 10.5194/acp-16-15741-2016, 16:24, (15741-15754)

Hossaini R, Chipperfield M, Saiz‐Lopez A, Fernandez R, Monks S, Feng W, Brauer P and von Glasow R (2016) A global model of tropospheric chlorine chemistry: Organic versus inorganic sources and impact on methane oxidation, Journal of Geophysical Research: Atmospheres, 10.1002/2016JD025756, 121:23, Online publication date: 16-Dec-2016.

Saunois M, Bousquet P, Poulter B, Peregon A, Ciais P, Canadell J, Dlugokencky E, Etiope G, Bastviken D, Houweling S, Janssens-Maenhout G, Tubiello F, Castaldi S, Jackson R, Alexe M, Arora V, Beerling D, Bergamaschi P, Blake D, Brailsford G, Brovkin V, Bruhwiler L, Crevoisier C, Crill P, Covey K, Curry C, Frankenberg C, Gedney N, Höglund-Isaksson L, Ishizawa M, Ito A, Joos F, Kim H, Kleinen T, Krummel P, Lamarque J, Langenfelds R, Locatelli R, Machida T, Maksyutov S, McDonald K, Marshall J, Melton J, Morino I, Naik V, O'Doherty S, Parmentier F, Patra P, Peng C, Peng S, Peters G, Pison I, Prigent C, Prinn R, Ramonet M, Riley W, Saito M, Santini M, Schroeder R, Simpson I, Spahni R, Steele P, Takizawa A, Thornton B, Tian H, Tohjima Y, Viovy N, Voulgarakis A, van Weele M, van der Werf G, Weiss R, Wiedinmyer C, Wilton D, Wiltshire A, Worthy D, Wunch D, Xu X, Yoshida Y, Zhang B, Zhang Z and Zhu Q (2016) The global methane budget 2000–2012, Earth System Science Data, 10.5194/essd-8-697-2016, 8:2, (697-751)

Jacob D, Turner A, Maasakkers J, Sheng J, Sun K, Liu X, Chance K, Aben I, McKeever J and Frankenberg C (2016) Satellite observations of atmospheric methane and their value for quantifying methane emissions, Atmospheric Chemistry and Physics, 10.5194/acp-16-14371-2016, 16:22, (14371-14396)

Resplandy L, Keeling R, Stephens B, Bent J, Jacobson A, Rödenbeck C and Khatiwala S (2016) Constraints on oceanic meridional heat transport from combined measurements of oxygen and carbon, Climate Dynamics, 10.1007/s00382-016-3029-3, 47:9-10, (3335-3357), Online publication date: 1-Nov-2016.

Tan X, Huang Y, Diao M, Bansemer A, Zondlo M, DiGangi J, Volkamer R and Hu Y (2016) An assessment of the radiative effects of ice supersaturation based on in situ observations, Geophysical Research Letters, 10.1002/2016GL071144, 43:20, Online publication date: 28-Oct-2016.

Yeung L, Murray L, Ash J, Young E, Boering K, Atlas E, Schauffler S, Lueb R, Langenfelds R, Krummel P, Steele L and Eastham S (2016) Isotopic ordering in atmospheric O 2 as a tracer of ozone photochemistry and the tropical atmosphere , Journal of Geophysical Research: Atmospheres, 10.1002/2016JD025455, 121:20, Online publication date: 27-Oct-2016.

Huang Y, Siems S, Manton M, Rosenfeld D, Marchand R, McFarquhar G and Protat A (2016) What is the Role of Sea Surface Temperature in Modulating Cloud and Precipitation Properties over the Southern Ocean?, Journal of Climate, 10.1175/JCLI-D-15-0768.1, 29:20, (7453-7476), Online publication date: 15-Oct-2016.

Ferrero L, Cappelletti D, Busetto M, Mazzola M, Lupi A, Lanconelli C, Becagli S, Traversi R, Caiazzo L, Giardi F, Moroni B, Crocchianti S, Fierz M, Močnik G, Sangiorgi G, Perrone M, Maturilli M, Vitale V, Udisti R and Bolzacchini E (2016) Vertical profiles of aerosol and black carbon in the Arctic: a seasonal phenomenology along 2 years (2011–2012) of field campaigns, Atmospheric Chemistry and Physics, 10.5194/acp-16-12601-2016, 16:19, (12601-12629)

Fast J, Berg L, Zhang K, Easter R, Ferrare R, Hair J, Hostetler C, Liu Y, Ortega I, Sedlacek A, Shilling J, Shrivastava M, Springston S, Tomlinson J, Volkamer R, Wilson J, Zaveri R and Zelenyuk A (2016) Model representations of aerosol layers transported from North America over the Atlantic Ocean during the Two‐Column Aerosol Project, Journal of Geophysical Research: Atmospheres, 10.1002/2016JD025248, 121:16, (9814-9848), Online publication date: 27-Aug-2016.

Inoue M, Morino I, Uchino O, Nakatsuru T, Yoshida Y, Yokota T, Wunch D, Wennberg P, Roehl C, Griffith D, Velazco V, Deutscher N, Warneke T, Notholt J, Robinson J, Sherlock V, Hase F, Blumenstock T, Rettinger M, Sussmann R, Kyrö E, Kivi R, Shiomi K, Kawakami S, De Mazière M, Arnold S, Feist D, Barrow E, Barney J, Dubey M, Schneider M, Iraci L, Podolske J, Hillyard P, Machida T, Sawa Y, Tsuboi K, Matsueda H, Sweeney C, Tans P, Andrews A, Biraud S, Fukuyama Y, Pittman J, Kort E and Tanaka T (2016) Bias corrections of GOSAT SWIR XCO<sub>2</sub> and XCH<sub>4</sub> with TCCON data and their evaluation using aircraft measurement data, Atmospheric Measurement Techniques, 10.5194/amt-9-3491-2016, 9:8, (3491-3512)

Tanaka T, Yates E, Iraci L, Johnson M, Gore W, Tadic J, Loewenstein M, Kuze A, Frankenberg C, Butz A and Yoshida Y Two-Year Comparison of Airborne Measurements of CO 2 and CH 4 With GOSAT at Railroad Valley, Nevada , IEEE Transactions on Geoscience and Remote Sensing, 10.1109/TGRS.2016.2539973, 54:8, (4367-4375)

Hossaini R, Patra P, Leeson A, Krysztofiak G, Abraham N, Andrews S, Archibald A, Aschmann J, Atlas E, Belikov D, Bönisch H, Carpenter L, Dhomse S, Dorf M, Engel A, Feng W, Fuhlbrügge S, Griffiths P, Harris N, Hommel R, Keber T, Krüger K, Lennartz S, Maksyutov S, Mantle H, Mills G, Miller B, Montzka S, Moore F, Navarro M, Oram D, Pfeilsticker K, Pyle J, Quack B, Robinson A, Saikawa E, Saiz-Lopez A, Sala S, Sinnhuber B, Taguchi S, Tegtmeier S, Lidster R, Wilson C and Ziska F (2016) A multi-model intercomparison of halogenated very short-lived substances (TransCom-VSLS): linking oceanic emissions and tropospheric transport for a reconciled estimate of the stratospheric source gas injection of bromine, Atmospheric Chemistry and Physics, 10.5194/acp-16-9163-2016, 16:14, (9163-9187)

Xiong X, Han Y, Liu Q and Weng F Comparison of Atmospheric Methane Retrievals From AIRS and IASI, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 10.1109/JSTARS.2016.2588279, 9:7, (3297-3303)

Chilinski M, Markowicz K and Markowicz J (2016) Observation of vertical variability of black carbon concentration in lower troposphere on campaigns in Poland, Atmospheric Environment, 10.1016/j.atmosenv.2016.04.020, 137, (155-170), Online publication date: 1-Jul-2016.

Frankenberg C, Kulawik S, Wofsy S, Chevallier F, Daube B, Kort E, O'Dell C, Olsen E and Osterman G (2016) Using airborne HIAPER Pole-to-Pole Observations (HIPPO) to evaluate model and remote sensing estimates of atmospheric carbon dioxide, Atmospheric Chemistry and Physics, 10.5194/acp-16-7867-2016, 16:12, (7867-7878)

Wang R, Balkanski Y, Boucher O, Ciais P, Schuster G, Chevallier F, Samset B, Liu J, Piao S, Valari M and Tao S (2016) Estimation of global black carbon direct radiative forcing and its uncertainty constrained by observations, Journal of Geophysical Research: Atmospheres, 10.1002/2015JD024326, 121:10, (5948-5971), Online publication date: 27-May-2016.

Sato Y, Miura H, Yashiro H, Goto D, Takemura T, Tomita H and Nakajima T (2016) Unrealistically pristine air in the Arctic produced by current global scale models, Scientific Reports, 10.1038/srep26561, 6:1

Tilmes S, Lamarque J, Emmons L, Kinnison D, Marsh D, Garcia R, Smith A, Neely R, Conley A, Vitt F, Val Martin M, Tanimoto H, Simpson I, Blake D and Blake N (2016) Representation of the Community Earth System Model (CESM1) CAM4-chem within the Chemistry-Climate Model Initiative (CCMI), Geoscientific Model Development, 10.5194/gmd-9-1853-2016, 9:5, (1853-1890)

Kiel M, Hase F, Blumenstock T and Kirner O (2016) Comparison of XCO abundances from the Total Carbon Column Observing Network and the Network for the Detection of Atmospheric Composition Change measured in Karlsruhe, Atmospheric Measurement Techniques, 10.5194/amt-9-2223-2016, 9:5, (2223-2239)

Hu L, Montzka S, Miller B, Andrews A, Miller J, Lehman S, Sweeney C, Miller S, Thoning K, Siso C, Atlas E, Blake D, de Gouw J, Gilman J, Dutton G, Elkins J, Hall B, Chen H, Fischer M, Mountain M, Nehrkorn T, Biraud S, Moore F and Tans P (2016) Continued emissions of carbon tetrachloride from the United States nearly two decades after its phaseout for dispersive uses, Proceedings of the National Academy of Sciences, 10.1073/pnas.1522284113, 113:11, (2880-2885), Online publication date: 15-Mar-2016.

He C, Li Q, Liou K, Qi L, Tao S and Schwarz J (2016) Microphysics-based black carbon aging in a global CTM: constraints from HIPPO observations and implications for global black carbon budget, Atmospheric Chemistry and Physics, 10.5194/acp-16-3077-2016, 16:5, (3077-3098)

Yan Y, Lin J, Chen J and Hu L (2016) Improved simulation of tropospheric ozone by a global-multi-regional two-way coupling model system, Atmospheric Chemistry and Physics, 10.5194/acp-16-2381-2016, 16:4, (2381-2400)

Deng F, Jones D, O'Dell C, Nassar R and Parazoo N (2016) Combining GOSAT X CO 2 observations over land and ocean to improve regional CO 2 flux estimates , Journal of Geophysical Research: Atmospheres, 10.1002/2015JD024157, 121:4, (1896-1913), Online publication date: 27-Feb-2016.

Liu X, Ma P, Wang H, Tilmes S, Singh B, Easter R, Ghan S and Rasch P (2016) Description and evaluation of a new four-mode version of the Modal Aerosol Module (MAM4) within version 5.3 of the Community Atmosphere Model, Geoscientific Model Development, 10.5194/gmd-9-505-2016, 9:2, (505-522)

Prenni A, Day D, Evanoski-Cole A, Sive B, Hecobian A, Zhou Y, Gebhart K, Hand J, Sullivan A, Li Y, Schurman M, Desyaterik Y, Malm W, Collett Jr. J and Schichtel B (2016) Oil and gas impacts on air quality in federal lands in the Bakken region: an overview of the Bakken Air Quality Study and first results, Atmospheric Chemistry and Physics, 10.5194/acp-16-1401-2016, 16:3, (1401-1416)

Feng L, Palmer P, Parker R, Deutscher N, Feist D, Kivi R, Morino I and Sussmann R (2016) Estimates of European uptake of CO 2 inferred from GOSAT X CO 2 retrievals: sensitivity to measurement bias inside and outside Europe , Atmospheric Chemistry and Physics, 10.5194/acp-16-1289-2016, 16:3, (1289-1302)

Höpner F, Bender F, Ekman A, Praveen P, Bosch C, Ogren J, Andersson A, Gustafsson Ö and Ramanathan V (2016) Vertical profiles of optical and microphysical particle properties above the northern Indian Ocean during CARDEX 2012, Atmospheric Chemistry and Physics, 10.5194/acp-16-1045-2016, 16:2, (1045-1064)

Chubb T, Huang Y, Jensen J, Campos T, Siems S and Manton M (2016) Observations of high droplet number concentrations in Southern Ocean boundary layer clouds, Atmospheric Chemistry and Physics, 10.5194/acp-16-971-2016, 16:2, (971-987)

Borsdorff T, Tol P, Williams J, de Laat J, aan de Brugh J, Nédélec P, Aben I and Landgraf J (2016) Carbon monoxide total columns from SCIAMACHY 2.3  µm atmospheric reflectance measurements: towards a full-mission data product (2003–2012), Atmospheric Measurement Techniques, 10.5194/amt-9-227-2016, 9:1, (227-248)

Pitt J, Le Breton M, Allen G, Percival C, Gallagher M, Bauguitte S, O'Shea S, Muller J, Zahniser M, Pyle J and Palmer P (2016) The development and evaluation of airborne in situ N 2 O and CH 4 sampling using a quantum cascade laser absorption spectrometer (QCLAS) , Atmospheric Measurement Techniques, 10.5194/amt-9-63-2016, 9:1, (63-77)

PATRA P, SAEKI T, DLUGOKENCKY E, ISHIJIMA K, UMEZAWA T, ITO A, AOKI S, MORIMOTO S, KORT E, CROTWELL A, RAVI KUMAR K and NAKAZAWA T (2016) Regional Methane Emission Estimation Based on Observed Atmospheric Concentrations (2002-2012), Journal of the Meteorological Society of Japan. Ser. II, 10.2151/jmsj.2016-006, 94:1, (91-113), .

Armenta S and de la Guardia M (2016) Physicochemistry of the Atmosphere The Quality of Air, 10.1016/bs.coac.2016.03.001, (3-26), .

Kuai L, Worden J, Campbell J, Kulawik S, Li K, Lee M, Weidner R, Montzka S, Moore F, Berry J, Baker I, Denning A, Bian H, Bowman K, Liu J and Yung Y (2015) Estimate of carbonyl sulfide tropical oceanic surface fluxes using Aura Tropospheric Emission Spectrometer observations, Journal of Geophysical Research: Atmospheres, 10.1002/2015JD023493, 120:20, Online publication date: 27-Oct-2015.

Deng F, Jones D, Walker T, Keller M, Bowman K, Henze D, Nassar R, Kort E, Wofsy S, Walker K, Bourassa A and Degenstein D (2015) Sensitivity analysis of the potential impact of discrepancies in stratosphere–troposphere exchange on inferred sources and sinks of CO 2 , Atmospheric Chemistry and Physics, 10.5194/acp-15-11773-2015, 15:20, (11773-11788)

Zhang J, Liu J, Tao S and Ban-Weiss G (2015) Long-range transport of black carbon to the Pacific Ocean and its dependence on aging timescale, Atmospheric Chemistry and Physics, 10.5194/acp-15-11521-2015, 15:20, (11521-11535)

Wells K, Millet D, Bousserez N, Henze D, Chaliyakunnel S, Griffis T, Luan Y, Dlugokencky E, Prinn R, O'Doherty S, Weiss R, Dutton G, Elkins J, Krummel P, Langenfelds R, Steele L, Kort E, Wofsy S and Umezawa T (2015) Simulation of atmospheric N 2 O with GEOS-Chem and its adjoint: evaluation of observational constraints , Geoscientific Model Development, 10.5194/gmd-8-3179-2015, 8:10, (3179-3198)

Yu J, Xie Z, Sun L, Kang H, He P and Xing G (2015) δ13C-CH4 reveals CH4 variations over oceans from mid-latitudes to the Arctic, Scientific Reports, 10.1038/srep13760, 5:1

Eckhardt S, Quennehen B, Olivié D, Berntsen T, Cherian R, Christensen J, Collins W, Crepinsek S, Daskalakis N, Flanner M, Herber A, Heyes C, Hodnebrog Ø, Huang L, Kanakidou M, Klimont Z, Langner J, Law K, Lund M, Mahmood R, Massling A, Myriokefalitakis S, Nielsen I, Nøjgaard J, Quaas J, Quinn P, Raut J, Rumbold S, Schulz M, Sharma S, Skeie R, Skov H, Uttal T, von Salzen K and Stohl A (2015) Current model capabilities for simulating black carbon and sulfate concentrations in the Arctic atmosphere: a multi-model evaluation using a comprehensive measurement data set, Atmospheric Chemistry and Physics, 10.5194/acp-15-9413-2015, 15:16, (9413-9433)

Baker L, Collins W, Olivié D, Cherian R, Hodnebrog &, Myhre G and Quaas J (2015) Climate responses to anthropogenic emissions of short-lived climate pollutants, Atmospheric Chemistry and Physics, 10.5194/acp-15-8201-2015, 15:14, (8201-8216)

Xiong X, Liu Q, Han Y and Weng F (2015) Comparison of atmospheric methane observations from AIRS and IASI IGARSS 2015 - 2015 IEEE International Geoscience and Remote Sensing Symposium, 10.1109/IGARSS.2015.7326685, 978-1-4799-7929-5, (3933-3936)

Turner A, Jacob D, Wecht K, Maasakkers J, Lundgren E, Andrews A, Biraud S, Boesch H, Bowman K, Deutscher N, Dubey M, Griffith D, Hase F, Kuze A, Notholt J, Ohyama H, Parker R, Payne V, Sussmann R, Sweeney C, Velazco V, Warneke T, Wennberg P and Wunch D (2015) Estimating global and North American methane emissions with high spatial resolution using GOSAT satellite data, Atmospheric Chemistry and Physics, 10.5194/acp-15-7049-2015, 15:12, (7049-7069)

Holzer M and Waugh D (2015) Interhemispheric transit time distributions and path‐dependent lifetimes constrained by measurements of SF 6 , CFCs, and CFC replacements , Geophysical Research Letters, 10.1002/2015GL064172, 42:11, (4581-4589), Online publication date: 16-Jun-2015.

Fiore A, Naik V and Leibensperger E (2015) Air Quality and Climate Connections, Journal of the Air & Waste Management Association, 10.1080/10962247.2015.1040526, 65:6, (645-685), Online publication date: 3-Jun-2015.

Buchwitz M, Reuter M, Schneising O, Boesch H, Guerlet S, Dils B, Aben I, Armante R, Bergamaschi P, Blumenstock T, Bovensmann H, Brunner D, Buchmann B, Burrows J, Butz A, Chédin A, Chevallier F, Crevoisier C, Deutscher N, Frankenberg C, Hase F, Hasekamp O, Heymann J, Kaminski T, Laeng A, Lichtenberg G, De Mazière M, Noël S, Notholt J, Orphal J, Popp C, Parker R, Scholze M, Sussmann R, Stiller G, Warneke T, Zehner C, Bril A, Crisp D, Griffith D, Kuze A, O'Dell C, Oshchepkov S, Sherlock V, Suto H, Wennberg P, Wunch D, Yokota T and Yoshida Y (2015) The Greenhouse Gas Climate Change Initiative (GHG-CCI): Comparison and quality assessment of near-surface-sensitive satellite-derived CO2 and CH4 global data sets, Remote Sensing of Environment, 10.1016/j.rse.2013.04.024, 162, (344-362), Online publication date: 1-Jun-2015.

Sweeney C, Karion A, Wolter S, Newberger T, Guenther D, Higgs J, Andrews A, Lang P, Neff D, Dlugokencky E, Miller J, Montzka S, Miller B, Masarie K, Biraud S, Novelli P, Crotwell M, Crotwell A, Thoning K and Tans P (2015) Seasonal climatology of CO 2 across North America from aircraft measurements in the NOAA/ESRL Global Greenhouse Gas Reference Network , Journal of Geophysical Research: Atmospheres, 10.1002/2014JD022591, 120:10, (5155-5190), Online publication date: 27-May-2015.

Tilmes S, Lamarque J, Emmons L, Kinnison D, Ma P, Liu X, Ghan S, Bardeen C, Arnold S, Deeter M, Vitt F, Ryerson T, Elkins J, Moore F, Spackman J and Val Martin M (2015) Description and evaluation of tropospheric chemistry and aerosols in the Community Earth System Model (CESM1.2), Geoscientific Model Development, 10.5194/gmd-8-1395-2015, 8:5, (1395-1426)

Fisher J, Wilson S, Zeng G, Williams J, Emmons L, Langenfelds R, Krummel P and Steele L (2015) Seasonal changes in the tropospheric carbon monoxide profile over the remote Southern Hemisphere evaluated using multi-model simulations and aircraft observations, Atmospheric Chemistry and Physics, 10.5194/acp-15-3217-2015, 15:6, (3217-3239)

Ding K, Liu J, Ding A, Liu Q, Zhao T, Shi J, Han Y, Wang H and Jiang F (2015) Uplifting of carbon monoxide from biomass burning and anthropogenic sources to the free troposphere in East Asia, Atmospheric Chemistry and Physics, 10.5194/acp-15-2843-2015, 15:5, (2843-2866)

Alvarado M, Payne V, Cady-Pereira K, Hegarty J, Kulawik S, Wecht K, Worden J, Pittman J and Wofsy S (2015) Impacts of updated spectroscopy on thermal infrared retrievals of methane evaluated with HIPPO data, Atmospheric Measurement Techniques, 10.5194/amt-8-965-2015, 8:2, (965-985)

Ott L, Pawson S, Collatz G, Gregg W, Menemenlis D, Brix H, Rousseaux C, Bowman K, Liu J, Eldering A, Gunson M and Kawa S (2015) Assessing the magnitude of CO 2 flux uncertainty in atmospheric CO 2 records using products from NASA's Carbon Monitoring Flux Pilot Project , Journal of Geophysical Research: Atmospheres, 10.1002/2014JD022411, 120:2, (734-765), Online publication date: 27-Jan-2015.

Nevison C, Manizza M, Keeling R, Kahru M, Bopp L, Dunne J, Tiputra J, Ilyina T and Mitchell B (2015) Evaluating the ocean biogeochemical components of Earth system models using atmospheric potential oxygen and ocean color data, Biogeosciences, 10.5194/bg-12-193-2015, 12:1, (193-208)

Alexe M, Bergamaschi P, Segers A, Detmers R, Butz A, Hasekamp O, Guerlet S, Parker R, Boesch H, Frankenberg C, Scheepmaker R, Dlugokencky E, Sweeney C, Wofsy S and Kort E (2015) Inverse modelling of CH 4 emissions for 2010–2011 using different satellite retrieval products from GOSAT and SCIAMACHY , Atmospheric Chemistry and Physics, 10.5194/acp-15-113-2015, 15:1, (113-133)

Martínez‐Alonso S, Deeter M, Worden H, Gille J, Emmons L, Pan L, Park M, Manney G, Bernath P, Boone C, Walker K, Kolonjari F, Wofsy S, Pittman J and Daube B (2014) Comparison of upper tropospheric carbon monoxide from MOPITT, ACE‐FTS, and HIPPO‐QCLS, Journal of Geophysical Research: Atmospheres, 10.1002/2014JD022397, 119:24, Online publication date: 27-Dec-2014.

Xiang B, Patra P, Montzka S, Miller S, Elkins J, Moore F, Atlas E, Miller B, Weiss R, Prinn R and Wofsy S (2014) Global emissions of refrigerants HCFC-22 and HFC-134a: Unforeseen seasonal contributions, Proceedings of the National Academy of Sciences, 10.1073/pnas.1417372111, 111:49, (17379-17384), Online publication date: 9-Dec-2014.

Ostler A, Sussmann R, Rettinger M, Deutscher N, Dohe S, Hase F, Jones N, Palm M and Sinnhuber B (2014) Multistation intercomparison of column-averaged methane from NDACC and TCCON: impact of dynamical variability, Atmospheric Measurement Techniques, 10.5194/amt-7-4081-2014, 7:12, (4081-4101)

Yan Y, Lin J, Kuang Y, Yang D and Zhang L (2014) Tropospheric carbon monoxide over the Pacific during HIPPO: two-way coupled simulation of GEOS-Chem and its multiple nested models, Atmospheric Chemistry and Physics, 10.5194/acp-14-12649-2014, 14:23, (12649-12663)

Agustí-Panareda A, Massart S, Chevallier F, Boussetta S, Balsamo G, Beljaars A, Ciais P, Deutscher N, Engelen R, Jones L, Kivi R, Paris J, Peuch V, Sherlock V, Vermeulen A, Wennberg P and Wunch D (2014) Forecasting global atmospheric CO 2 , Atmospheric Chemistry and Physics, 10.5194/acp-14-11959-2014, 14:21, (11959-11983)

Payne V, Alvarado M, Cady-Pereira K, Worden J, Kulawik S and Fischer E (2014) Satellite observations of peroxyacetyl nitrate from the Aura Tropospheric Emission Spectrometer, Atmospheric Measurement Techniques, 10.5194/amt-7-3737-2014, 7:11, (3737-3749)

Deeter M, Martínez-Alonso S, Edwards D, Emmons L, Gille J, Worden H, Sweeney C, Pittman J, Daube B and Wofsy S (2014) The MOPITT Version 6 product: algorithm enhancements and validation, Atmospheric Measurement Techniques, 10.5194/amt-7-3623-2014, 7:11, (3623-3632)

Wang Z, Deutscher N, Warneke T, Notholt J, Dils B, Griffith D, Schmidt M, Ramonet M and Gerbig C (2014) Retrieval of tropospheric column-averaged CH 4 mole fraction by solar absorption FTIR-spectrometry using N 2 O as a proxy , Atmospheric Measurement Techniques, 10.5194/amt-7-3295-2014, 7:10, (3295-3305)

Cooper W, Spuler S, Spowart M, Lenschow D and Friesen R (2014) Calibrating airborne measurements of airspeed, pressure and temperature using a Doppler laser air-motion sensor, Atmospheric Measurement Techniques, 10.5194/amt-7-3215-2014, 7:9, (3215-3231)

Deutscher N, Sherlock V, Mikaloff Fletcher S, Griffith D, Notholt J, Macatangay R, Connor B, Robinson J, Shiona H, Velazco V, Wang Y, Wennberg P and Wunch D (2014) Drivers of column-average CO 2 variability at Southern Hemispheric Total Carbon Column Observing Network sites , Atmospheric Chemistry and Physics, 10.5194/acp-14-9883-2014, 14:18, (9883-9901)

Inoue M, Morino I, Uchino O, Miyamoto Y, Saeki T, Yoshida Y, Yokota T, Sweeney C, Tans P, Biraud S, Machida T, Pittman J, Kort E, Tanaka T, Kawakami S, Sawa Y, Tsuboi K and Matsueda H (2014) Validation of XCH 4 derived from SWIR spectra of GOSAT TANSO-FTS with aircraft measurement data , Atmospheric Measurement Techniques, 10.5194/amt-7-2987-2014, 7:9, (2987-3005)

Patra P, Krol M, Montzka S, Arnold T, Atlas E, Lintner B, Stephens B, Xiang B, Elkins J, Fraser P, Ghosh A, Hintsa E, Hurst D, Ishijima K, Krummel P, Miller B, Miyazaki K, Moore F, Mühle J, O’Doherty S, Prinn R, Steele L, Takigawa M, Wang H, Weiss R, Wofsy S and Young D (2014) Observational evidence for interhemispheric hydroxyl-radical parity, Nature, 10.1038/nature13721, 513:7517, (219-223), Online publication date: 11-Sep-2014.

Xiong X, Maddy E, Barnet C, Gambacorta A, Patra P, Sun F and Goldberg M (2014) Retrieval of nitrous oxide from Atmospheric Infrared Sounder: Characterization and validation, Journal of Geophysical Research: Atmospheres, 10.1002/2013JD021406, 119:14, (9107-9122), Online publication date: 27-Jul-2014.

Sioris C, Boone C, Nassar R, Sutton K, Gordon I, Walker K and Bernath P (2014) Retrieval of carbon dioxide vertical profiles from solar occultation observations and associated error budgets for ACE-FTS and CASS-FTS, Atmospheric Measurement Techniques, 10.5194/amt-7-2243-2014, 7:7, (2243-2262)

Wecht K, Jacob D, Frankenberg C, Jiang Z and Blake D (2014) Mapping of North American methane emissions with high spatial resolution by inversion of SCIAMACHY satellite data, Journal of Geophysical Research: Atmospheres, 10.1002/2014JD021551, 119:12, (7741-7756), Online publication date: 27-Jun-2014.

Shen Z, Liu J, Horowitz L, Henze D, Fan S, H. L, Mauzerall D, Lin J and Tao S (2014) Analysis of transpacific transport of black carbon during HIPPO-3: implications for black carbon aging, Atmospheric Chemistry and Physics, 10.5194/acp-14-6315-2014, 14:12, (6315-6327)

Massart S, Agusti-Panareda A, Aben I, Butz A, Chevallier F, Crevoisier C, Engelen R, Frankenberg C and Hasekamp O (2014) Assimilation of atmospheric methane products into the MACC-II system: from SCIAMACHY to TANSO and IASI, Atmospheric Chemistry and Physics, 10.5194/acp-14-6139-2014, 14:12, (6139-6158)

Diao M, Zondlo M, Heymsfield A and Beaton S (2014) Hemispheric comparison of cirrus cloud evolution using in situ measurements in HIAPER Pole-to-Pole Observations, Geophysical Research Letters, 10.1002/2014GL059873, 41:11, (4090-4099), Online publication date: 16-Jun-2014.

Santoni G, Daube B, Kort E, Jiménez R, Park S, Pittman J, Gottlieb E, Xiang B, Zahniser M, Nelson D, McManus J, Peischl J, Ryerson T, Holloway J, Andrews A, Sweeney C, Hall B, Hintsa E, Moore F, Elkins J, Hurst D, Stephens B, Bent J and Wofsy S (2014) Evaluation of the airborne quantum cascade laser spectrometer (QCLS) measurements of the carbon and greenhouse gas suite – CO 2 , CH 4 , N 2 O, and CO – during the CalNex and HIPPO campaigns , Atmospheric Measurement Techniques, 10.5194/amt-7-1509-2014, 7:6, (1509-1526)

Wei J, Savtchenko A, Vollmer B, Hearty T, Albayrak A, Crisp D and Eldering A Advances in <inline-formula> <tex-math notation="TeX"> $\hbox{CO}_{2}$</tex-math></inline-formula> Observations From AIRS and ACOS, IEEE Geoscience and Remote Sensing Letters, 10.1109/LGRS.2013.2281147, 11:5, (891-895)

Zhang Y, Xiong X, Tao J, Yu C, Zou M, Su L and Chen L (2014) Methane retrieval from Atmospheric Infrared Sounder using EOF-based regression algorithm and its validation, Chinese Science Bulletin, 10.1007/s11434-014-0232-7, 59:14, (1508-1518), Online publication date: 1-May-2014.

Houweling S, Krol M, Bergamaschi P, Frankenberg C, Dlugokencky E, Morino I, Notholt J, Sherlock V, Wunch D, Beck V, Gerbig C, Chen H, Kort E, Röckmann T and Aben I (2014) A multi-year methane inversion using SCIAMACHY, accounting for systematic errors using TCCON measurements, Atmospheric Chemistry and Physics, 10.5194/acp-14-3991-2014, 14:8, (3991-4012)

Deng F, Jones D, Henze D, Bousserez N, Bowman K, Fisher J, Nassar R, O'Dell C, Wunch D, Wennberg P, Kort E, Wofsy S, Blumenstock T, Deutscher N, Griffith D, Hase F, Heikkinen P, Sherlock V, Strong K, Sussmann R and Warneke T (2014) Inferring regional sources and sinks of atmospheric CO 2 from GOSAT XCO 2 data , Atmospheric Chemistry and Physics, 10.5194/acp-14-3703-2014, 14:7, (3703-3727)

Wisher A, Oram D, Laube J, Mills G, van Velthoven P, Zahn A and Brenninkmeijer C (2014) Very short-lived bromomethanes measured by the CARIBIC observatory over the North Atlantic, Africa and Southeast Asia during 2009–2013, Atmospheric Chemistry and Physics, 10.5194/acp-14-3557-2014, 14:7, (3557-3570)

Diao M, Zondlo M, Heymsfield A, Avallone L, Paige M, Beaton S, Campos T and Rogers D (2014) Cloud-scale ice-supersaturated regions spatially correlate with high water vapor heterogeneities, Atmospheric Chemistry and Physics, 10.5194/acp-14-2639-2014, 14:5, (2639-2656)

Kuai L, Worden J, Kulawik S, Montzka S and Liu J (2014) Characterization of Aura TES carbonyl sulfide retrievals over ocean, Atmospheric Measurement Techniques, 10.5194/amt-7-163-2014, 7:1, (163-172)

Wang Q, Jacob D, Spackman J, Perring A, Schwarz J, Moteki N, Marais E, Ge C, Wang J and Barrett S (2014) Global budget and radiative forcing of black carbon aerosol: Constraints from pole‐to‐pole (HIPPO) observations across the Pacific, Journal of Geophysical Research: Atmospheres, 10.1002/2013JD020824, 119:1, (195-206), Online publication date: 16-Jan-2014.

Rahul P, Bhawar R, Ayantika D, Panicker A, Safai P, Tharaprabhakaran V, Padmakumari B and Raju M (2014) Double blanket effect caused by two layers of black carbon aerosols escalates warming in the Brahmaputra River Valley, Scientific Reports, 10.1038/srep03670, 4:1

Keeling R and Manning A (2014) Studies of Recent Changes in Atmospheric O2 Content Treatise on Geochemistry, 10.1016/B978-0-08-095975-7.00420-4, (385-404), .

Tegtmeier S, Krüger K, Quack B, Atlas E, Blake D, Boenisch H, Engel A, Hepach H, Hossaini R, Navarro M, Raimund S, Sala S, Shi Q and Ziska F (2013) The contribution of oceanic methyl iodide to stratospheric iodine, Atmospheric Chemistry and Physics, 10.5194/acp-13-11869-2013, 13:23, (11869-11886)

Hossaini R, Mantle H, Chipperfield M, Montzka S, Hamer P, Ziska F, Quack B, Krüger K, Tegtmeier S, Atlas E, Sala S, Engel A, Bönisch H, Keber T, Oram D, Mills G, Ordóñez C, Saiz-Lopez A, Warwick N, Liang Q, Feng W, Moore F, Miller B, Marécal V, Richards N, Dorf M and Pfeilsticker K (2013) Evaluating global emission inventories of biogenic bromocarbons, Atmospheric Chemistry and Physics, 10.5194/acp-13-11819-2013, 13:23, (11819-11838)

Schwarz J, Samset B, Perring A, Spackman J, Gao R, Stier P, Schulz M, Moore F, Ray E and Fahey D (2013) Global‐scale seasonally resolved black carbon vertical profiles over the Pacific, Geophysical Research Letters, 10.1002/2013GL057775, 40:20, (5542-5547), Online publication date: 28-Oct-2013.

Monteil G, Houweling S, Butz A, Guerlet S, Schepers D, Hasekamp O, Frankenberg C, Scheepmaker R, Aben I and Röckmann T (2013) Comparison of CH 4 inversions based on 15 months of GOSAT and SCIAMACHY observations , Journal of Geophysical Research: Atmospheres, 10.1002/2013JD019760, 118:20, Online publication date: 27-Oct-2013.

Waugh D, Crotwell A, Dlugokencky E, Dutton G, Elkins J, Hall B, Hintsa E, Hurst D, Montzka S, Mondeel D, Moore F, Nance J, Ray E, Steenrod S, Strahan S and Sweeney C (2013) Tropospheric SF 6 : Age of air from the Northern Hemisphere midlatitude surface , Journal of Geophysical Research: Atmospheres, 10.1002/jgrd.50848, 118:19, Online publication date: 16-Oct-2013.

Inoue M, Morino I, Uchino O, Miyamoto Y, Yoshida Y, Yokota T, Machida T, Sawa Y, Matsueda H, Sweeney C, Tans P, Andrews A, Biraud S, Tanaka T, Kawakami S and Patra P (2013) Validation of XCO 2 derived from SWIR spectra of GOSAT TANSO-FTS with aircraft measurement data , Atmospheric Chemistry and Physics, 10.5194/acp-13-9771-2013, 13:19, (9771-9788)

Li J, Chen W and Fischer H (2013) Quantum Cascade Laser Spectrometry Techniques: A New Trend in Atmospheric Chemistry, Applied Spectroscopy Reviews, 10.1080/05704928.2012.757232, 48:7, (523-559), Online publication date: 1-Oct-2013.

Chatterjee A, Engelen R, Kawa S, Sweeney C and Michalak A (2013) Background error covariance estimation for atmospheric CO 2 data assimilation , Journal of Geophysical Research: Atmospheres, 10.1002/jgrd.50654, 118:17, Online publication date: 16-Sep-2013.

Graven H, Keeling R, Piper S, Patra P, Stephens B, Wofsy S, Welp L, Sweeney C, Tans P, Kelley J, Daube B, Kort E, Santoni G and Bent J (2013) Enhanced Seasonal Exchange of CO 2 by Northern Ecosystems Since 1960 , Science, 10.1126/science.1239207, 341:6150, (1085-1089), Online publication date: 6-Sep-2013.

Xiong X, Barnet C, Maddy E, Gambacorta A, King T and Wofsy S (2013) Mid-upper tropospheric methane retrieval from IASI and its validation, Atmospheric Measurement Techniques, 10.5194/amt-6-2255-2013, 6:9, (2255-2265)

Collins D, Ault A, Moffet R, Ruppel M, Cuadra‐Rodriguez L, Guasco T, Corrigan C, Pedler B, Azam F, Aluwihare L, Bertram T, Roberts G, Grassian V and Prather K (2013) Impact of marine biogeochemistry on the chemical mixing state and cloud forming ability of nascent sea spray aerosol, Journal of Geophysical Research: Atmospheres, 10.1002/jgrd.50598, 118:15, (8553-8565), Online publication date: 16-Aug-2013.

Bergamaschi P, Houweling S, Segers A, Krol M, Frankenberg C, Scheepmaker R, Dlugokencky E, Wofsy S, Kort E, Sweeney C, Schuck T, Brenninkmeijer C, Chen H, Beck V and Gerbig C (2013) Atmospheric CH 4 in the first decade of the 21st century: Inverse modeling analysis using SCIAMACHY satellite retrievals and NOAA surface measurements , Journal of Geophysical Research: Atmospheres, 10.1002/jgrd.50480, 118:13, (7350-7369), Online publication date: 16-Jul-2013.

Diao M, Zondlo M, Heymsfield A, Beaton S and Rogers D (2013) Evolution of ice crystal regions on the microscale based on in situ observations, Geophysical Research Letters, 10.1002/grl.50665, 40:13, (3473-3478), Online publication date: 16-Jul-2013.

Xiang B, Nelson D, McManus J, Zahniser M and Wofsy S (2013) Towards a stable and absolute atmospheric carbon dioxide instrument using spectroscopic null method, Atmospheric Measurement Techniques, 10.5194/amt-6-1611-2013, 6:7, (1611-1621)

Keppel-Aleks G, Randerson J, Lindsay K, Stephens B, Keith Moore J, Doney S, Thornton P, Mahowald N, Hoffman F, Sweeney C, Tans P, Wennberg P and Wofsy S (2013) Atmospheric Carbon Dioxide Variability in the Community Earth System Model: Evaluation and Transient Dynamics during the Twentieth and Twenty-First Centuries, Journal of Climate, 10.1175/JCLI-D-12-00589.1, 26:13, (4447-4475), Online publication date: 1-Jul-2013.

Diao M, Jumbam L, Sheffield J, Wood E and Zondlo M (2013) Validation of AIRS/AMSU‐A water vapor and temperature data with in situ aircraft observations from the surface to UT/LS from 87°N–67°S, Journal of Geophysical Research: Atmospheres, 10.1002/jgrd.50483, 118:12, (6816-6836), Online publication date: 27-Jun-2013.

Deeter M, Martínez‐Alonso S, Edwards D, Emmons L, Gille J, Worden H, Pittman J, Daube B and Wofsy S (2013) Validation of MOPITT Version 5 thermal‐infrared, near‐infrared, and multispectral carbon monoxide profile retrievals for 2000–2011, Journal of Geophysical Research: Atmospheres, 10.1002/jgrd.50272, 118:12, (6710-6725), Online publication date: 27-Jun-2013.

Kipling Z, Stier P, Schwarz J, Perring A, Spackman J, Mann G, Johnson C and Telford P (2013) Constraints on aerosol processes in climate models from vertically-resolved aircraft observations of black carbon, Atmospheric Chemistry and Physics, 10.5194/acp-13-5969-2013, 13:12, (5969-5986)

Bond T, Doherty S, Fahey D, Forster P, Berntsen T, DeAngelo B, Flanner M, Ghan S, Kärcher B, Koch D, Kinne S, Kondo Y, Quinn P, Sarofim M, Schultz M, Schulz M, Venkataraman C, Zhang H, Zhang S, Bellouin N, Guttikunda S, Hopke P, Jacobson M, Kaiser J, Klimont Z, Lohmann U, Schwarz J, Shindell D, Storelvmo T, Warren S and Zender C (2013) Bounding the role of black carbon in the climate system: A scientific assessment, Journal of Geophysical Research: Atmospheres, 10.1002/jgrd.50171, 118:11, (5380-5552), Online publication date: 16-Jun-2013.

Cziczo D, Froyd K, Hoose C, Jensen E, Diao M, Zondlo M, Smith J, Twohy C and Murphy D (2013) Clarifying the Dominant Sources and Mechanisms of Cirrus Cloud Formation, Science, 10.1126/science.1234145, 340:6138, (1320-1324), Online publication date: 14-Jun-2013.

Li J, Parchatka U and Fischer H (2013) Development of field-deployable QCL sensor for simultaneous detection of ambient N2O and CO, Sensors and Actuators B: Chemical, 10.1016/j.snb.2013.03.073, 182, (659-667), Online publication date: 1-Jun-2013.

Xiong X, Barnet C, Maddy E, Wofsy S, Chen L, Karion A and Sweeney C (2013) Detection of methane depletion associated with stratospheric intrusion by atmospheric infrared sounder (AIRS), Geophysical Research Letters, 10.1002/grl.50476, 40:10, (2455-2459), Online publication date: 28-May-2013.

O'Shea S, Bauguitte S, Gallagher M, Lowry D and Percival C (2013) Development of a cavity-enhanced absorption spectrometer for airborne measurements of CH 4 and CO 2 , Atmospheric Measurement Techniques, 10.5194/amt-6-1095-2013, 6:5, (1095-1109)

Brioude J, Angevine W, Ahmadov R, Kim S, Evan S, McKeen S, Hsie E, Frost G, Neuman J, Pollack I, Peischl J, Ryerson T, Holloway J, Brown S, Nowak J, Roberts J, Wofsy S, Santoni G, Oda T and Trainer M (2013) Top-down estimate of surface flux in the Los Angeles Basin using a mesoscale inverse modeling technique: assessing anthropogenic emissions of CO, NO x and CO 2 and their impacts , Atmospheric Chemistry and Physics, 10.5194/acp-13-3661-2013, 13:7, (3661-3677)

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Kort E, Wofsy S, Daube B, Diao M, Elkins J, Gao R, Hintsa E, Hurst D, Jimenez R, Moore F, Spackman J and Zondlo M (2012) Atmospheric observations of Arctic Ocean methane emissions up to 82° north, Nature Geoscience, 10.1038/ngeo1452, 5:5, (318-321), Online publication date: 1-May-2012.

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Worden J, Kulawik S, Frankenberg C, Payne V, Bowman K, Cady-Peirara K, Wecht K, Lee J and Noone D (2012) Profiles of CH 4 , HDO, H 2 O, and N 2 O with improved lower tropospheric vertical resolution from Aura TES radiances , Atmospheric Measurement Techniques, 10.5194/amt-5-397-2012, 5:2, (397-411)

Wecht K, Jacob D, Wofsy S, Kort E, Worden J, Kulawik S, Henze D, Kopacz M and Payne V (2012) Validation of TES methane with HIPPO aircraft observations: implications for inverse modeling of methane sources, Atmospheric Chemistry and Physics, 10.5194/acp-12-1823-2012, 12:4, (1823-1832)

Ordóñez C, Lamarque J, Tilmes S, Kinnison D, Atlas E, Blake D, Sousa Santos G, Brasseur G and Saiz-Lopez A (2012) Bromine and iodine chemistry in a global chemistry-climate model: description and evaluation of very short-lived oceanic sources, Atmospheric Chemistry and Physics, 10.5194/acp-12-1423-2012, 12:3, (1423-1447)

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Hossaini R, Chipperfield M, Feng W, Breider T, Atlas E, Montzka S, Miller B, Moore F and Elkins J (2012) The contribution of natural and anthropogenic very short-lived species to stratospheric bromine, Atmospheric Chemistry and Physics, 10.5194/acp-12-371-2012, 12:1, (371-380)

Chevallier F, Deutscher N, Conway T, Ciais P, Ciattaglia L, Dohe S, Fröhlich M, Gomez-Pelaez A, Griffith D, Hase F, Haszpra L, Krummel P, Kyrö E, Labuschagne C, Langenfelds R, Machida T, Maignan F, Matsueda H, Morino I, Notholt J, Ramonet M, Sawa Y, Schmidt M, Sherlock V, Steele P, Strong K, Sussmann R, Wennberg P, Wofsy S, Worthy D, Wunch D and Zimnoch M (2011) Global CO 2 fluxes inferred from surface air-sample measurements and from TCCON retrievals of the CO 2 total column , Geophysical Research Letters, 10.1029/2011GL049899, 38:24, (n/a-n/a), Online publication date: 28-Dec-2011.

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Nevison C, Dlugokencky E, Dutton G, Elkins J, Fraser P, Hall B, Krummel P, Langenfelds R, O'Doherty S, Prinn R, Steele L and Weiss R (2011) Exploring causes of interannual variability in the seasonal cycles of tropospheric nitrous oxide, Atmospheric Chemistry and Physics, 10.5194/acp-11-3713-2011, 11:8, (3713-3730)

Nassar R, Jones D, Suntharalingam P, Chen J, Andres R, Wecht K, Yantosca R, Kulawik S, Bowman K, Worden J, Machida T and Matsueda H (2010) Modeling global atmospheric CO 2 with improved emission inventories and CO 2 production from the oxidation of other carbon species , Geoscientific Model Development, 10.5194/gmd-3-689-2010, 3:2, (689-716)

Wunch D, Toon G, Wennberg P, Wofsy S, Stephens B, Fischer M, Uchino O, Abshire J, Bernath P, Biraud S, Blavier J, Boone C, Bowman K, Browell E, Campos T, Connor B, Daube B, Deutscher N, Diao M, Elkins J, Gerbig C, Gottlieb E, Griffith D, Hurst D, Jiménez R, Keppel-Aleks G, Kort E, Macatangay R, Machida T, Matsueda H, Moore F, Morino I, Park S, Robinson J, Roehl C, Sawa Y, Sherlock V, Sweeney C, Tanaka T and Zondlo M (2010) Calibration of the Total Carbon Column Observing Network using aircraft profile data, Atmospheric Measurement Techniques, 10.5194/amt-3-1351-2010, 3:5, (1351-1362)

This Issue

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences cover image

28 May 2011

Volume 369Issue 1943

Discussion Meeting Issue 'Greenhouse gases in the Earth system: setting the agenda to 2030' organized and edited by Andrew C. Manning, Euan G. Nisbet, Ralph F. Keeling and Peter S. Liss

Article Information

DOI:https://doi.org/10.1098/rsta.2010.0313
Published by:Royal Society
Print ISSN:1364-503X
Online ISSN:1471-2962

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Published online28/05/2011
Published in print28/05/2011

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