2008: Southern Ocean mixed-layer depth from Argo float profiles
[1] Argo float profiles of temperature, salinity, and pressure are used to derive the mixed-layer depth (MLD) in the Southern Ocean. MLD is determined from individual profiles using both potential density and potential temperature criteria, and a monthly climatology is derived from individual MLDs u...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.411.7412 2023-05-15T13:55:40+02:00 2008: Southern Ocean mixed-layer depth from Argo float profiles Shenfu Dong Janet Sprintall Sarah T. Gille Lynne Talley The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.411.7412 http://www-pord.ucsd.edu/~sgille/pub_dir/2006JC004051.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.411.7412 http://www-pord.ucsd.edu/~sgille/pub_dir/2006JC004051.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www-pord.ucsd.edu/~sgille/pub_dir/2006JC004051.pdf text ftciteseerx 2016-01-08T03:22:44Z [1] Argo float profiles of temperature, salinity, and pressure are used to derive the mixed-layer depth (MLD) in the Southern Ocean. MLD is determined from individual profiles using both potential density and potential temperature criteria, and a monthly climatology is derived from individual MLDs using an objective mapping method. Quantitative data are available in the auxiliary material. The spatial structures of MLDs are similar in each month, with deep mixed layers within and just north of the Antarctic Circumpolar Current (ACC) in the Pacific and Indian oceans. The deepest mixed layers are found from June to October and are located just north of the ACC where Antarctic Intermediate Water (AAIW) and Subantarctic Mode Water (SAMW) are formed. Examination of individual MLDs indicates that deep mixed layers (MLD 400 m) from both the density and temperature criteria are concentrated in a narrow surface density band which is within the density range of SAMW. The surface salinity for these deep mixed layers associated with the SAMW formation are slightly fresher compared to historical estimates. Differences in air-sea heat exchanges, wind stress, and wind stress curl in the Pacific and Indian oceans suggest that the mode water formation in each ocean basin may be preconditioned by different processes. Wind mixing and Ekman transport of cold water from the south may assist the SAMW formation in the Indian Ocean. In the eastern Pacific, the formation of mode water is potentially preconditioned by the relative strong cooling and weak stratification from upwelling. Text Antarc* Antarctic Southern Ocean Unknown Antarctic Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) Indian Pacific Southern Ocean The Antarctic |
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Open Polar |
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ftciteseerx |
language |
English |
description |
[1] Argo float profiles of temperature, salinity, and pressure are used to derive the mixed-layer depth (MLD) in the Southern Ocean. MLD is determined from individual profiles using both potential density and potential temperature criteria, and a monthly climatology is derived from individual MLDs using an objective mapping method. Quantitative data are available in the auxiliary material. The spatial structures of MLDs are similar in each month, with deep mixed layers within and just north of the Antarctic Circumpolar Current (ACC) in the Pacific and Indian oceans. The deepest mixed layers are found from June to October and are located just north of the ACC where Antarctic Intermediate Water (AAIW) and Subantarctic Mode Water (SAMW) are formed. Examination of individual MLDs indicates that deep mixed layers (MLD 400 m) from both the density and temperature criteria are concentrated in a narrow surface density band which is within the density range of SAMW. The surface salinity for these deep mixed layers associated with the SAMW formation are slightly fresher compared to historical estimates. Differences in air-sea heat exchanges, wind stress, and wind stress curl in the Pacific and Indian oceans suggest that the mode water formation in each ocean basin may be preconditioned by different processes. Wind mixing and Ekman transport of cold water from the south may assist the SAMW formation in the Indian Ocean. In the eastern Pacific, the formation of mode water is potentially preconditioned by the relative strong cooling and weak stratification from upwelling. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Shenfu Dong Janet Sprintall Sarah T. Gille Lynne Talley |
spellingShingle |
Shenfu Dong Janet Sprintall Sarah T. Gille Lynne Talley 2008: Southern Ocean mixed-layer depth from Argo float profiles |
author_facet |
Shenfu Dong Janet Sprintall Sarah T. Gille Lynne Talley |
author_sort |
Shenfu Dong |
title |
2008: Southern Ocean mixed-layer depth from Argo float profiles |
title_short |
2008: Southern Ocean mixed-layer depth from Argo float profiles |
title_full |
2008: Southern Ocean mixed-layer depth from Argo float profiles |
title_fullStr |
2008: Southern Ocean mixed-layer depth from Argo float profiles |
title_full_unstemmed |
2008: Southern Ocean mixed-layer depth from Argo float profiles |
title_sort |
2008: southern ocean mixed-layer depth from argo float profiles |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.411.7412 http://www-pord.ucsd.edu/~sgille/pub_dir/2006JC004051.pdf |
long_lat |
ENVELOPE(-63.071,-63.071,-70.797,-70.797) |
geographic |
Antarctic Curl Indian Pacific Southern Ocean The Antarctic |
geographic_facet |
Antarctic Curl Indian Pacific Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
http://www-pord.ucsd.edu/~sgille/pub_dir/2006JC004051.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.411.7412 http://www-pord.ucsd.edu/~sgille/pub_dir/2006JC004051.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766262467634135040 |