Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
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Discussion meeting issue ‘Atlantic overturning: new observations and challenges’ organised and edited by M. A. Srokosz, N. P. Holliday and H. L. Bryden FRS

The Atlantic meridional overturning circulation (AMOC) is projected to slowdown or stop under global warming, with major climatic impacts. To determine the likelihood of this happening and to understand its present state requires observations of the AMOC, which have only been available since 2004. Despite recent suggestions that the shutdown will happen soon, the observations suggest a more complex picture of the AMOC behaviour and point to the need to continue observing to improve future projections and to provide robust advice to policy makers. The new observations have led to a paradigm shift in how the AMOC is conceptualised – from simple conveyor belt to more complex flows – and further observations will no doubt continue to raise new research challenges.

This theme issue is based on a Royal Society Discussion meeting which took place in December 2022. Watch recordings of talks here.

Read more in a blog post by one of the Guest Editors.

This issue is available to buy in print. Visit our information for readers page for purchasing options.

INTRODUCTION

Introduction
Atlantic overturning: new observations and challenges
Published:23 October 2023Article ID:20220196

https://doi.org/10.1098/rsta.2022.0196

ARTICLES

Opinion piece
Challenges simulating the AMOC in climate models
Published:23 October 2023Article ID:20220187

https://doi.org/10.1098/rsta.2022.0187

Review articles
Arctic freshwater impact on the Atlantic Meridional Overturning Circulation: status and prospects
Published:23 October 2023Article ID:20220185

https://doi.org/10.1098/rsta.2022.0185

Review articles
Overturning in the subpolar North Atlantic: a review
Published:23 October 2023Article ID:20220191

https://doi.org/10.1098/rsta.2022.0191

Opinion piece
Should AMOC observations continue: how and why?
Published:23 October 2023Article ID:20220195

https://doi.org/10.1098/rsta.2022.0195

Opinion piece
From theory to RAPID AMOC observations: a personal voyage of discovery
Published:23 October 2023Article ID:20220192

https://doi.org/10.1098/rsta.2022.0192

Discussion
Can we trust projections of AMOC weakening based on climate models that cannot reproduce the past?
Published:23 October 2023Article ID:20220193

https://doi.org/10.1098/rsta.2022.0193

Review articles
Labrador sea water spreading and the Atlantic meridional overturning circulation
Published:23 October 2023Article ID:20220189

https://doi.org/10.1098/rsta.2022.0189

Review articles
Buoyancy forcing and the subpolar Atlantic meridional overturning circulation
Published:23 October 2023Article ID:20220181

https://doi.org/10.1098/rsta.2022.0181

Research articles
Towards two decades of Atlantic Ocean mass and heat transports at 26.5° N
Published:23 October 2023Article ID:20220188

https://doi.org/10.1098/rsta.2022.0188

Research articles
Contrasting internally and externally generated Atlantic Multidecadal Variability and the role for AMOC in CMIP6 historical simulations
Published:23 October 2023Article ID:20220194

https://doi.org/10.1098/rsta.2022.0194

Research articles
Observed mechanisms activating the recent subpolar North Atlantic Warming since 2016
Published:23 October 2023Article ID:20220183

https://doi.org/10.1098/rsta.2022.0183

Review articles
Evolution of Atlantic Meridional Overturning Circulation since the last glaciation: model simulations and relevance to present and future
Published:23 October 2023Article ID:20220190

https://doi.org/10.1098/rsta.2022.0190