Correlation between Synthetic Aperture Radar Surface Winds and Deep Water Velocity in the Amundsen Sea, Antarctica
The recent observed thinning of the glacier ice shelves in the Amundsen Sea (Antarctica) has been attributed to warm deep currents, possibly induced by along-coast winds in the vicinity of the glacial ice sheet. Here, high resolution maps of wind fields derived from Synthetic Aperture Radar (SAR) da...
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ftdoajarticles:oai:doaj.org/article:e6eb50cb7f204b09ad84d62501e1e0a0 2023-05-15T13:23:35+02:00 Correlation between Synthetic Aperture Radar Surface Winds and Deep Water Velocity in the Amundsen Sea, Antarctica Gisela K. Carvajal Leif E.B. Eriksson Anna K. Wåhlin Lars M.H. Ulander 2013-08-01T00:00:00Z https://doi.org/10.3390/rs5084088 https://doaj.org/article/e6eb50cb7f204b09ad84d62501e1e0a0 EN eng MDPI AG http://www.mdpi.com/2072-4292/5/8/4088 https://doaj.org/toc/2072-4292 doi:10.3390/rs5084088 2072-4292 https://doaj.org/article/e6eb50cb7f204b09ad84d62501e1e0a0 Remote Sensing, Vol 5, Iss 8, Pp 4088-4106 (2013) Amundsen Sea surface wind Synthetic Aperture Radar ocean deep water velocity ERA interim Envisat ASAR Science Q article 2013 ftdoajarticles https://doi.org/10.3390/rs5084088 2022-12-31T15:21:18Z The recent observed thinning of the glacier ice shelves in the Amundsen Sea (Antarctica) has been attributed to warm deep currents, possibly induced by along-coast winds in the vicinity of the glacial ice sheet. Here, high resolution maps of wind fields derived from Synthetic Aperture Radar (SAR) data have been studied and correlated with subsurface measurements of the deep water velocities in the Amundsen Sea area. Focus is on periods with low ice coverage in 2010 and 2011. In 2010, which had comparatively low ice coverage, the results indicate a more rapid response to wind forcing in the deep currents than in 2011. The SAR wind speed maps have better spatial resolution than available reanalysis data, and higher maximum correlation was obtained with SAR data than with reanalysis data despite the lower temporal resolution. The maximum correlation was R = 0.71, in a direction that is consistent with wind-driven Ekman theory. This is significantly larger than in previous studies. The larger correlation could be due to the better spatial resolution or the restriction to months with minimum ice coverage. The results indicate that SAR is a useful complement to infer the subsurface variability of the ocean circulation in remote areas in polar oceans. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctica Ice Sheet Ice Shelves Directory of Open Access Journals: DOAJ Articles Amundsen Sea Asar ENVELOPE(134.033,134.033,68.667,68.667) Remote Sensing 5 8 4088 4106 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Amundsen Sea surface wind Synthetic Aperture Radar ocean deep water velocity ERA interim Envisat ASAR Science Q |
spellingShingle |
Amundsen Sea surface wind Synthetic Aperture Radar ocean deep water velocity ERA interim Envisat ASAR Science Q Gisela K. Carvajal Leif E.B. Eriksson Anna K. Wåhlin Lars M.H. Ulander Correlation between Synthetic Aperture Radar Surface Winds and Deep Water Velocity in the Amundsen Sea, Antarctica |
topic_facet |
Amundsen Sea surface wind Synthetic Aperture Radar ocean deep water velocity ERA interim Envisat ASAR Science Q |
description |
The recent observed thinning of the glacier ice shelves in the Amundsen Sea (Antarctica) has been attributed to warm deep currents, possibly induced by along-coast winds in the vicinity of the glacial ice sheet. Here, high resolution maps of wind fields derived from Synthetic Aperture Radar (SAR) data have been studied and correlated with subsurface measurements of the deep water velocities in the Amundsen Sea area. Focus is on periods with low ice coverage in 2010 and 2011. In 2010, which had comparatively low ice coverage, the results indicate a more rapid response to wind forcing in the deep currents than in 2011. The SAR wind speed maps have better spatial resolution than available reanalysis data, and higher maximum correlation was obtained with SAR data than with reanalysis data despite the lower temporal resolution. The maximum correlation was R = 0.71, in a direction that is consistent with wind-driven Ekman theory. This is significantly larger than in previous studies. The larger correlation could be due to the better spatial resolution or the restriction to months with minimum ice coverage. The results indicate that SAR is a useful complement to infer the subsurface variability of the ocean circulation in remote areas in polar oceans. |
format |
Article in Journal/Newspaper |
author |
Gisela K. Carvajal Leif E.B. Eriksson Anna K. Wåhlin Lars M.H. Ulander |
author_facet |
Gisela K. Carvajal Leif E.B. Eriksson Anna K. Wåhlin Lars M.H. Ulander |
author_sort |
Gisela K. Carvajal |
title |
Correlation between Synthetic Aperture Radar Surface Winds and Deep Water Velocity in the Amundsen Sea, Antarctica |
title_short |
Correlation between Synthetic Aperture Radar Surface Winds and Deep Water Velocity in the Amundsen Sea, Antarctica |
title_full |
Correlation between Synthetic Aperture Radar Surface Winds and Deep Water Velocity in the Amundsen Sea, Antarctica |
title_fullStr |
Correlation between Synthetic Aperture Radar Surface Winds and Deep Water Velocity in the Amundsen Sea, Antarctica |
title_full_unstemmed |
Correlation between Synthetic Aperture Radar Surface Winds and Deep Water Velocity in the Amundsen Sea, Antarctica |
title_sort |
correlation between synthetic aperture radar surface winds and deep water velocity in the amundsen sea, antarctica |
publisher |
MDPI AG |
publishDate |
2013 |
url |
https://doi.org/10.3390/rs5084088 https://doaj.org/article/e6eb50cb7f204b09ad84d62501e1e0a0 |
long_lat |
ENVELOPE(134.033,134.033,68.667,68.667) |
geographic |
Amundsen Sea Asar |
geographic_facet |
Amundsen Sea Asar |
genre |
Amundsen Sea Antarc* Antarctica Ice Sheet Ice Shelves |
genre_facet |
Amundsen Sea Antarc* Antarctica Ice Sheet Ice Shelves |
op_source |
Remote Sensing, Vol 5, Iss 8, Pp 4088-4106 (2013) |
op_relation |
http://www.mdpi.com/2072-4292/5/8/4088 https://doaj.org/toc/2072-4292 doi:10.3390/rs5084088 2072-4292 https://doaj.org/article/e6eb50cb7f204b09ad84d62501e1e0a0 |
op_doi |
https://doi.org/10.3390/rs5084088 |
container_title |
Remote Sensing |
container_volume |
5 |
container_issue |
8 |
container_start_page |
4088 |
op_container_end_page |
4106 |
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1766373410134294528 |