Recent contributions of theory to our understanding of the Atlantic Meridional Overturning Circulation
Revolutionary observational arrays, together with a new generation of ocean and climate models, have provided new and intriguing insights into the Atlantic Meridional Overturning Circulation (AMOC) over the last two decades. Theoretical models have also changed our view of the AMOC, providing a dyna...
Published in: | Journal of Geophysical Research: Oceans |
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ftuloxford:oai:ora.ox.ac.uk:uuid:026fb96e-befe-4fc1-a0d4-683826823faf 2023-05-15T13:47:04+02:00 Recent contributions of theory to our understanding of the Atlantic Meridional Overturning Circulation Johnson, H Cessi, P Marshall, D Schoesser, F Spall, M 2019-07-30 https://doi.org/10.1029/2019JC015330 https://ora.ox.ac.uk/objects/uuid:026fb96e-befe-4fc1-a0d4-683826823faf unknown American Geophysical Union doi:10.1029/2019JC015330 https://ora.ox.ac.uk/objects/uuid:026fb96e-befe-4fc1-a0d4-683826823faf https://doi.org/10.1029/2019JC015330 info:eu-repo/semantics/openAccess CC Attribution (CC BY) CC-BY Journal article 2019 ftuloxford https://doi.org/10.1029/2019JC015330 2022-06-28T20:04:47Z Revolutionary observational arrays, together with a new generation of ocean and climate models, have provided new and intriguing insights into the Atlantic Meridional Overturning Circulation (AMOC) over the last two decades. Theoretical models have also changed our view of the AMOC, providing a dynamical framework for understanding the new observations and the results of complex models. In this paper we review recent advances in conceptual understanding of the processes maintaining the AMOC. We discuss recent theoretical models that address issues such as the interplay between surface buoyancy and wind forcing, the extent to which the AMOC is adiabatic, the importance of mesoscale eddies, the interaction between the middepth North Atlantic Deep Water cell and the abyssal Antarctic Bottom Water cell, the role of basin geometry and bathymetry, and the importance of a three‐dimensional multiple‐basin perspective. We review new paradigms for deep water formation in the high‐latitude North Atlantic and the impact of diapycnal mixing on vertical motion in the ocean interior. And we discuss advances in our understanding of the AMOC's stability and its scaling with large‐scale meridional density gradients. Along with reviewing theories for the mean AMOC, we consider models of AMOC variability and discuss what we have learned from theory about the detection and meridional propagation of AMOC anomalies. Simple theoretical models remain a vital and powerful tool for articulating our understanding of the AMOC and identifying the processes that are most critical to represent accurately in the next generation of numerical ocean and climate models. Article in Journal/Newspaper Antarc* Antarctic North Atlantic Deep Water North Atlantic ORA - Oxford University Research Archive Antarctic Journal of Geophysical Research: Oceans 124 8 5376 5399 |
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ORA - Oxford University Research Archive |
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description |
Revolutionary observational arrays, together with a new generation of ocean and climate models, have provided new and intriguing insights into the Atlantic Meridional Overturning Circulation (AMOC) over the last two decades. Theoretical models have also changed our view of the AMOC, providing a dynamical framework for understanding the new observations and the results of complex models. In this paper we review recent advances in conceptual understanding of the processes maintaining the AMOC. We discuss recent theoretical models that address issues such as the interplay between surface buoyancy and wind forcing, the extent to which the AMOC is adiabatic, the importance of mesoscale eddies, the interaction between the middepth North Atlantic Deep Water cell and the abyssal Antarctic Bottom Water cell, the role of basin geometry and bathymetry, and the importance of a three‐dimensional multiple‐basin perspective. We review new paradigms for deep water formation in the high‐latitude North Atlantic and the impact of diapycnal mixing on vertical motion in the ocean interior. And we discuss advances in our understanding of the AMOC's stability and its scaling with large‐scale meridional density gradients. Along with reviewing theories for the mean AMOC, we consider models of AMOC variability and discuss what we have learned from theory about the detection and meridional propagation of AMOC anomalies. Simple theoretical models remain a vital and powerful tool for articulating our understanding of the AMOC and identifying the processes that are most critical to represent accurately in the next generation of numerical ocean and climate models. |
format |
Article in Journal/Newspaper |
author |
Johnson, H Cessi, P Marshall, D Schoesser, F Spall, M |
spellingShingle |
Johnson, H Cessi, P Marshall, D Schoesser, F Spall, M Recent contributions of theory to our understanding of the Atlantic Meridional Overturning Circulation |
author_facet |
Johnson, H Cessi, P Marshall, D Schoesser, F Spall, M |
author_sort |
Johnson, H |
title |
Recent contributions of theory to our understanding of the Atlantic Meridional Overturning Circulation |
title_short |
Recent contributions of theory to our understanding of the Atlantic Meridional Overturning Circulation |
title_full |
Recent contributions of theory to our understanding of the Atlantic Meridional Overturning Circulation |
title_fullStr |
Recent contributions of theory to our understanding of the Atlantic Meridional Overturning Circulation |
title_full_unstemmed |
Recent contributions of theory to our understanding of the Atlantic Meridional Overturning Circulation |
title_sort |
recent contributions of theory to our understanding of the atlantic meridional overturning circulation |
publisher |
American Geophysical Union |
publishDate |
2019 |
url |
https://doi.org/10.1029/2019JC015330 https://ora.ox.ac.uk/objects/uuid:026fb96e-befe-4fc1-a0d4-683826823faf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic North Atlantic Deep Water North Atlantic |
genre_facet |
Antarc* Antarctic North Atlantic Deep Water North Atlantic |
op_relation |
doi:10.1029/2019JC015330 https://ora.ox.ac.uk/objects/uuid:026fb96e-befe-4fc1-a0d4-683826823faf https://doi.org/10.1029/2019JC015330 |
op_rights |
info:eu-repo/semantics/openAccess CC Attribution (CC BY) |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2019JC015330 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
124 |
container_issue |
8 |
container_start_page |
5376 |
op_container_end_page |
5399 |
_version_ |
1766246275743744000 |