Mapping the Antarctic Polar Front: weekly realizations from 2002 to 2014
We map the weekly position of the Antarctic Polar Front (PF) in the Southern Ocean over a 12-year period (2002–2014) using satellite sea surface temperature (SST) estimated from cloud-penetrating microwave radiometers. Our study advances previous efforts to map the PF using hydrographic and satellit...
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ftunicolboulder:oai:scholar.colorado.edu:atoc_facpapers-1013 2023-05-15T13:49:40+02:00 Mapping the Antarctic Polar Front: weekly realizations from 2002 to 2014 Freeman, Natalie Marie Lovenduski, Nicole S. 2016-05-12T07:00:00Z application/pdf https://scholar.colorado.edu/atoc_facpapers/6 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1013&context=atoc_facpapers unknown CU Scholar https://scholar.colorado.edu/atoc_facpapers/6 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1013&context=atoc_facpapers Atmospheric & Oceanic Sciences Faculty Contributions text 2016 ftunicolboulder 2018-10-07T09:06:44Z We map the weekly position of the Antarctic Polar Front (PF) in the Southern Ocean over a 12-year period (2002–2014) using satellite sea surface temperature (SST) estimated from cloud-penetrating microwave radiometers. Our study advances previous efforts to map the PF using hydrographic and satellite data and provides a unique realization of the PF at weekly resolution across all longitudes (doi:10.1594/PANGAEA.855640). The mean path of the PF is asymmetric; its latitudinal position spans from 44 to 64° S along its circumpolar path. SST at the PF ranges from 0.6 to 6.9 °C, reflecting the large spread in latitudinal position. The average intensity of the front is 1.7 °C per 100 km, with intensity ranging from 1.4 to 2.3 °C per 100 km. Front intensity is significantly correlated with the depth of bottom topography, suggesting that the front intensifies over shallow bathymetry. Realizations of the PF are consistent with the corresponding surface expressions of the PF estimated using expendable bathythermograph data in the Drake Passage and Australian and African sectors. The climatological mean position of the PF is similar, though not identical, to previously published estimates. As the PF is a key indicator of physical circulation, surface nutrient concentration, and biogeography in the Southern Ocean, future studies of physical and biogeochemical oceanography in this region will benefit from the provided data set. Text Antarc* Antarctic Drake Passage Southern Ocean University of Colorado, Boulder: CU Scholar Antarctic Southern Ocean The Antarctic Drake Passage |
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University of Colorado, Boulder: CU Scholar |
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description |
We map the weekly position of the Antarctic Polar Front (PF) in the Southern Ocean over a 12-year period (2002–2014) using satellite sea surface temperature (SST) estimated from cloud-penetrating microwave radiometers. Our study advances previous efforts to map the PF using hydrographic and satellite data and provides a unique realization of the PF at weekly resolution across all longitudes (doi:10.1594/PANGAEA.855640). The mean path of the PF is asymmetric; its latitudinal position spans from 44 to 64° S along its circumpolar path. SST at the PF ranges from 0.6 to 6.9 °C, reflecting the large spread in latitudinal position. The average intensity of the front is 1.7 °C per 100 km, with intensity ranging from 1.4 to 2.3 °C per 100 km. Front intensity is significantly correlated with the depth of bottom topography, suggesting that the front intensifies over shallow bathymetry. Realizations of the PF are consistent with the corresponding surface expressions of the PF estimated using expendable bathythermograph data in the Drake Passage and Australian and African sectors. The climatological mean position of the PF is similar, though not identical, to previously published estimates. As the PF is a key indicator of physical circulation, surface nutrient concentration, and biogeography in the Southern Ocean, future studies of physical and biogeochemical oceanography in this region will benefit from the provided data set. |
format |
Text |
author |
Freeman, Natalie Marie Lovenduski, Nicole S. |
spellingShingle |
Freeman, Natalie Marie Lovenduski, Nicole S. Mapping the Antarctic Polar Front: weekly realizations from 2002 to 2014 |
author_facet |
Freeman, Natalie Marie Lovenduski, Nicole S. |
author_sort |
Freeman, Natalie Marie |
title |
Mapping the Antarctic Polar Front: weekly realizations from 2002 to 2014 |
title_short |
Mapping the Antarctic Polar Front: weekly realizations from 2002 to 2014 |
title_full |
Mapping the Antarctic Polar Front: weekly realizations from 2002 to 2014 |
title_fullStr |
Mapping the Antarctic Polar Front: weekly realizations from 2002 to 2014 |
title_full_unstemmed |
Mapping the Antarctic Polar Front: weekly realizations from 2002 to 2014 |
title_sort |
mapping the antarctic polar front: weekly realizations from 2002 to 2014 |
publisher |
CU Scholar |
publishDate |
2016 |
url |
https://scholar.colorado.edu/atoc_facpapers/6 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1013&context=atoc_facpapers |
geographic |
Antarctic Southern Ocean The Antarctic Drake Passage |
geographic_facet |
Antarctic Southern Ocean The Antarctic Drake Passage |
genre |
Antarc* Antarctic Drake Passage Southern Ocean |
genre_facet |
Antarc* Antarctic Drake Passage Southern Ocean |
op_source |
Atmospheric & Oceanic Sciences Faculty Contributions |
op_relation |
https://scholar.colorado.edu/atoc_facpapers/6 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1013&context=atoc_facpapers |
_version_ |
1766251937239400448 |