Sensitivity of the Southern Ocean overturning circulation to surface buoyancy forcing
The sensitivity of the Southern Ocean overturning to altered surface buoyancy forcing is investigated in a series of eddy-permitting, idealised simulations. The modelled response indicates that heat and freshwater fluxes in the Southern Hemisphere mid-latitudes may play a significant role in setting...
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American Geophysical Union
2015
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ftanucanberra:oai:digitalcollections.anu.edu.au:1885/35240 2023-05-15T18:24:46+02:00 Sensitivity of the Southern Ocean overturning circulation to surface buoyancy forcing Morrison, Adele Hogg, Andrew Ward, Marshall 2015-12-08T22:36:24Z http://hdl.handle.net/1885/35240 unknown American Geophysical Union 0094-8276 http://hdl.handle.net/1885/35240 Geophysical Research Letters Journal article 2015 ftanucanberra 2015-12-28T23:24:54Z The sensitivity of the Southern Ocean overturning to altered surface buoyancy forcing is investigated in a series of eddy-permitting, idealised simulations. The modelled response indicates that heat and freshwater fluxes in the Southern Hemisphere mid-latitudes may play a significant role in setting the strength of the overturning circulation. Enhanced buoyancy fluxes act to increase the meridional overturning up to a limit approaching the wind-driven Ekman transport. The sensitivity of the overturning to surface buoyancy forcing is strongly dependent on the relative locations of the wind stress profile, buoyancy forcing and upwelling region. The numerical simulations provide support for the hypothesis that changes in upwelling during deglaciations may have been driven by changes in heat and freshwater fluxes, instead of, or in addition to, changes in wind stress. Article in Journal/Newspaper Southern Ocean Australian National University: ANU Digital Collections Southern Ocean |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
description |
The sensitivity of the Southern Ocean overturning to altered surface buoyancy forcing is investigated in a series of eddy-permitting, idealised simulations. The modelled response indicates that heat and freshwater fluxes in the Southern Hemisphere mid-latitudes may play a significant role in setting the strength of the overturning circulation. Enhanced buoyancy fluxes act to increase the meridional overturning up to a limit approaching the wind-driven Ekman transport. The sensitivity of the overturning to surface buoyancy forcing is strongly dependent on the relative locations of the wind stress profile, buoyancy forcing and upwelling region. The numerical simulations provide support for the hypothesis that changes in upwelling during deglaciations may have been driven by changes in heat and freshwater fluxes, instead of, or in addition to, changes in wind stress. |
format |
Article in Journal/Newspaper |
author |
Morrison, Adele Hogg, Andrew Ward, Marshall |
spellingShingle |
Morrison, Adele Hogg, Andrew Ward, Marshall Sensitivity of the Southern Ocean overturning circulation to surface buoyancy forcing |
author_facet |
Morrison, Adele Hogg, Andrew Ward, Marshall |
author_sort |
Morrison, Adele |
title |
Sensitivity of the Southern Ocean overturning circulation to surface buoyancy forcing |
title_short |
Sensitivity of the Southern Ocean overturning circulation to surface buoyancy forcing |
title_full |
Sensitivity of the Southern Ocean overturning circulation to surface buoyancy forcing |
title_fullStr |
Sensitivity of the Southern Ocean overturning circulation to surface buoyancy forcing |
title_full_unstemmed |
Sensitivity of the Southern Ocean overturning circulation to surface buoyancy forcing |
title_sort |
sensitivity of the southern ocean overturning circulation to surface buoyancy forcing |
publisher |
American Geophysical Union |
publishDate |
2015 |
url |
http://hdl.handle.net/1885/35240 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Geophysical Research Letters |
op_relation |
0094-8276 http://hdl.handle.net/1885/35240 |
_version_ |
1766205644871827456 |