Role of the Southern Ocean in setting the Atlantic stratification and meridional overturning circulation
This study examines the importance of the Southern Ocean (SO) stratification in determining the upper cell of the Atlantic meridional overturning circulation (MOC) and stratification. Main results are based on a suite of idealized numerical simulations of the Atlantic with the prescribed density str...
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ftnavalpschool:oai:calhoun.nps.edu:10945/42126 2024-06-09T07:48:02+00:00 Role of the Southern Ocean in setting the Atlantic stratification and meridional overturning circulation Kamenkovich, Igor Radko, Timour Oceanography 2011 application/pdf https://hdl.handle.net/10945/42126 unknown Journal of Marine Research, 69, 277–308, 2011 https://hdl.handle.net/10945/42126 This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. Article 2011 ftnavalpschool 2024-05-15T00:37:25Z This study examines the importance of the Southern Ocean (SO) stratification in determining the upper cell of the Atlantic meridional overturning circulation (MOC) and stratification. Main results are based on a suite of idealized numerical simulations of the Atlantic with the prescribed density structure at the Atlantic southern boundary, intended to explore the importance of various factors. The results demonstrate that the density distribution at the SO-Atlantic boundary is the key factor controlling the Atlantic stratification and MOC, whereas the main importance of the Ekman and eddy (parameterized) exchanges is in setting the SO stratification. Among all aspects of the SO stratification, the position of the deep isopycnals near the western boundary of the Atlantic basin appears to determine the strength of the MOC for given isopycnal outcrop positions in the North Atlantic. The interplay between the SO stratification and surface density in the North Atlantic is, however, important for the MOC. In particular, the steady-state AMOC response to a negative North Atlantic density anomaly is shown to be amplified if the SO stratification is not allowed to change. Article in Journal/Newspaper North Atlantic Southern Ocean Naval Postgraduate School: Calhoun Southern Ocean |
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Naval Postgraduate School: Calhoun |
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ftnavalpschool |
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description |
This study examines the importance of the Southern Ocean (SO) stratification in determining the upper cell of the Atlantic meridional overturning circulation (MOC) and stratification. Main results are based on a suite of idealized numerical simulations of the Atlantic with the prescribed density structure at the Atlantic southern boundary, intended to explore the importance of various factors. The results demonstrate that the density distribution at the SO-Atlantic boundary is the key factor controlling the Atlantic stratification and MOC, whereas the main importance of the Ekman and eddy (parameterized) exchanges is in setting the SO stratification. Among all aspects of the SO stratification, the position of the deep isopycnals near the western boundary of the Atlantic basin appears to determine the strength of the MOC for given isopycnal outcrop positions in the North Atlantic. The interplay between the SO stratification and surface density in the North Atlantic is, however, important for the MOC. In particular, the steady-state AMOC response to a negative North Atlantic density anomaly is shown to be amplified if the SO stratification is not allowed to change. |
author2 |
Oceanography |
format |
Article in Journal/Newspaper |
author |
Kamenkovich, Igor Radko, Timour |
spellingShingle |
Kamenkovich, Igor Radko, Timour Role of the Southern Ocean in setting the Atlantic stratification and meridional overturning circulation |
author_facet |
Kamenkovich, Igor Radko, Timour |
author_sort |
Kamenkovich, Igor |
title |
Role of the Southern Ocean in setting the Atlantic stratification and meridional overturning circulation |
title_short |
Role of the Southern Ocean in setting the Atlantic stratification and meridional overturning circulation |
title_full |
Role of the Southern Ocean in setting the Atlantic stratification and meridional overturning circulation |
title_fullStr |
Role of the Southern Ocean in setting the Atlantic stratification and meridional overturning circulation |
title_full_unstemmed |
Role of the Southern Ocean in setting the Atlantic stratification and meridional overturning circulation |
title_sort |
role of the southern ocean in setting the atlantic stratification and meridional overturning circulation |
publishDate |
2011 |
url |
https://hdl.handle.net/10945/42126 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_relation |
Journal of Marine Research, 69, 277–308, 2011 https://hdl.handle.net/10945/42126 |
op_rights |
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. |
_version_ |
1801379579133165568 |