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...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
American Geophysical Union
|
Subjects: | |
Online Access: | http://hdl.handle.net/1885/35240 https://doi.org/10.1029/2011GL048031 https://openresearch-repository.anu.edu.au/bitstream/1885/35240/5/morrison_2011.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/35240/7/01_Morrison_Sensitivity_of_the_Southern_2011.pdf.jpg |
id |
ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/35240 |
---|---|
record_format |
openpolar |
spelling |
ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/35240 2024-01-14T10:10:49+01:00 Sensitivity of the Southern Ocean overturning circulation to surface buoyancy forcing Morrison, Adele Hogg, Andrew Ward, Marshall http://hdl.handle.net/1885/35240 https://doi.org/10.1029/2011GL048031 https://openresearch-repository.anu.edu.au/bitstream/1885/35240/5/morrison_2011.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/35240/7/01_Morrison_Sensitivity_of_the_Southern_2011.pdf.jpg unknown American Geophysical Union 0094-8276 http://hdl.handle.net/1885/35240 doi:10.1029/2011GL048031 https://openresearch-repository.anu.edu.au/bitstream/1885/35240/5/morrison_2011.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/35240/7/01_Morrison_Sensitivity_of_the_Southern_2011.pdf.jpg Author/s retain copyright Geophysical Research Letters Keywords: Buoyancy fluxes Buoyancy forcing Deglaciations Ekman transport Freshwater fluxes Midlatitudes Overturning circulation Relative location Southern Hemisphere Southern Ocean Stress profile Upwelling region Stress analysis Wind stress Buoyancy Journal article ftanucanberra https://doi.org/10.1029/2011GL048031 2023-12-15T09:34:56Z 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 Geophysical Research Letters 38 14 n/a n/a |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
Keywords: Buoyancy fluxes Buoyancy forcing Deglaciations Ekman transport Freshwater fluxes Midlatitudes Overturning circulation Relative location Southern Hemisphere Southern Ocean Stress profile Upwelling region Stress analysis Wind stress Buoyancy |
spellingShingle |
Keywords: Buoyancy fluxes Buoyancy forcing Deglaciations Ekman transport Freshwater fluxes Midlatitudes Overturning circulation Relative location Southern Hemisphere Southern Ocean Stress profile Upwelling region Stress analysis Wind stress Buoyancy Morrison, Adele Hogg, Andrew Ward, Marshall Sensitivity of the Southern Ocean overturning circulation to surface buoyancy forcing |
topic_facet |
Keywords: Buoyancy fluxes Buoyancy forcing Deglaciations Ekman transport Freshwater fluxes Midlatitudes Overturning circulation Relative location Southern Hemisphere Southern Ocean Stress profile Upwelling region Stress analysis Wind stress Buoyancy |
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 |
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 |
url |
http://hdl.handle.net/1885/35240 https://doi.org/10.1029/2011GL048031 https://openresearch-repository.anu.edu.au/bitstream/1885/35240/5/morrison_2011.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/35240/7/01_Morrison_Sensitivity_of_the_Southern_2011.pdf.jpg |
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 doi:10.1029/2011GL048031 https://openresearch-repository.anu.edu.au/bitstream/1885/35240/5/morrison_2011.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/35240/7/01_Morrison_Sensitivity_of_the_Southern_2011.pdf.jpg |
op_rights |
Author/s retain copyright |
op_doi |
https://doi.org/10.1029/2011GL048031 |
container_title |
Geophysical Research Letters |
container_volume |
38 |
container_issue |
14 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1788065646757543936 |