Deterioration of perennial sea ice in the Beaufort Gyre from 2003 to 2012 and its impact on the oceanic freshwater cycle
© The Author(s), 2014. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Journal of Geophysical Research: Oceans 119 (2014): 1271-1305, doi:10.1002/2013JC008999. Time series of ice draft from 2003 to 2012 from moored sona...
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Online Access: | https://hdl.handle.net/1912/6729 |
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/6729 2023-05-15T18:17:53+02:00 Deterioration of perennial sea ice in the Beaufort Gyre from 2003 to 2012 and its impact on the oceanic freshwater cycle Krishfield, Richard A. Proshutinsky, Andrey Tateyama, Kazutaka Williams, William J. Carmack, Eddy C. McLaughlin, Fiona A. Timmermans, Mary-Louise 2014-02-22 application/pdf https://hdl.handle.net/1912/6729 en_US eng John Wiley & Sons https://doi.org/10.1002/2013JC008999 Journal of Geophysical Research: Oceans 119 (2014): 1271-1305 https://hdl.handle.net/1912/6729 doi:10.1002/2013JC008999 Attribution-NonCommercial-NoDerivs 3.0 Unported http://creativecommons.org/licenses/by-nc-nd/3.0/ CC-BY-NC-ND Journal of Geophysical Research: Oceans 119 (2014): 1271-1305 doi:10.1002/2013JC008999 Ice draft Beaufort Gyre Freshwater Article 2014 ftwhoas https://doi.org/10.1002/2013JC008999 2022-05-28T22:59:07Z © The Author(s), 2014. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Journal of Geophysical Research: Oceans 119 (2014): 1271-1305, doi:10.1002/2013JC008999. Time series of ice draft from 2003 to 2012 from moored sonar data are used to investigate variability and describe the reduction of the perennial sea ice cover in the Beaufort Gyre (BG), culminating in the extreme minimum in 2012. Negative trends in median ice drafts and most ice fractions are observed, while open water and thinnest ice fractions (<0.3 m) have increased, attesting to the ablation or removal of the older sea ice from the BG over the 9 year period. Monthly anomalies indicate a shift occurred toward thinner ice after 2007, in which the thicker ice evident at the northern stations was reduced. Differences in the ice characteristics between all of the stations also diminished, so that the ice cover throughout the region became statistically homogenous. The moored data are used in a relationship with satellite radiometer data to estimate ice volume changes throughout the BG. Summer solid fresh water content decreased drastically in consecutive years from 730 km3 in 2006 to 570 km3 in 2007, and to 240 km3 in 2008. After a short rebound, solid fresh water fell below 220 km3 in 2012. Meanwhile, hydrographic data indicate that liquid fresh water in the BG in summer increased 5410 km3 from 2003 to 2010 and decreased at least 210 km3 by 2012. The reduction of both solid and liquid fresh water components indicates a net export of approximately 320 km3 of fresh water from the region occurred between 2010 and 2012, suggesting that the anticyclonic atmosphere-ocean circulation has weakened. Support for Krishfield, Proshutinsky, and Timmermans, partial financial support of logistics, hydrographic observations on the board of Canadian icebreaker, and full financial coverage of all mooring instrumentation was provided by the National Science Foundation (under grants ... Article in Journal/Newspaper Sea ice Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Journal of Geophysical Research: Oceans 119 2 1271 1305 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Ice draft Beaufort Gyre Freshwater |
spellingShingle |
Ice draft Beaufort Gyre Freshwater Krishfield, Richard A. Proshutinsky, Andrey Tateyama, Kazutaka Williams, William J. Carmack, Eddy C. McLaughlin, Fiona A. Timmermans, Mary-Louise Deterioration of perennial sea ice in the Beaufort Gyre from 2003 to 2012 and its impact on the oceanic freshwater cycle |
topic_facet |
Ice draft Beaufort Gyre Freshwater |
description |
© The Author(s), 2014. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Journal of Geophysical Research: Oceans 119 (2014): 1271-1305, doi:10.1002/2013JC008999. Time series of ice draft from 2003 to 2012 from moored sonar data are used to investigate variability and describe the reduction of the perennial sea ice cover in the Beaufort Gyre (BG), culminating in the extreme minimum in 2012. Negative trends in median ice drafts and most ice fractions are observed, while open water and thinnest ice fractions (<0.3 m) have increased, attesting to the ablation or removal of the older sea ice from the BG over the 9 year period. Monthly anomalies indicate a shift occurred toward thinner ice after 2007, in which the thicker ice evident at the northern stations was reduced. Differences in the ice characteristics between all of the stations also diminished, so that the ice cover throughout the region became statistically homogenous. The moored data are used in a relationship with satellite radiometer data to estimate ice volume changes throughout the BG. Summer solid fresh water content decreased drastically in consecutive years from 730 km3 in 2006 to 570 km3 in 2007, and to 240 km3 in 2008. After a short rebound, solid fresh water fell below 220 km3 in 2012. Meanwhile, hydrographic data indicate that liquid fresh water in the BG in summer increased 5410 km3 from 2003 to 2010 and decreased at least 210 km3 by 2012. The reduction of both solid and liquid fresh water components indicates a net export of approximately 320 km3 of fresh water from the region occurred between 2010 and 2012, suggesting that the anticyclonic atmosphere-ocean circulation has weakened. Support for Krishfield, Proshutinsky, and Timmermans, partial financial support of logistics, hydrographic observations on the board of Canadian icebreaker, and full financial coverage of all mooring instrumentation was provided by the National Science Foundation (under grants ... |
format |
Article in Journal/Newspaper |
author |
Krishfield, Richard A. Proshutinsky, Andrey Tateyama, Kazutaka Williams, William J. Carmack, Eddy C. McLaughlin, Fiona A. Timmermans, Mary-Louise |
author_facet |
Krishfield, Richard A. Proshutinsky, Andrey Tateyama, Kazutaka Williams, William J. Carmack, Eddy C. McLaughlin, Fiona A. Timmermans, Mary-Louise |
author_sort |
Krishfield, Richard A. |
title |
Deterioration of perennial sea ice in the Beaufort Gyre from 2003 to 2012 and its impact on the oceanic freshwater cycle |
title_short |
Deterioration of perennial sea ice in the Beaufort Gyre from 2003 to 2012 and its impact on the oceanic freshwater cycle |
title_full |
Deterioration of perennial sea ice in the Beaufort Gyre from 2003 to 2012 and its impact on the oceanic freshwater cycle |
title_fullStr |
Deterioration of perennial sea ice in the Beaufort Gyre from 2003 to 2012 and its impact on the oceanic freshwater cycle |
title_full_unstemmed |
Deterioration of perennial sea ice in the Beaufort Gyre from 2003 to 2012 and its impact on the oceanic freshwater cycle |
title_sort |
deterioration of perennial sea ice in the beaufort gyre from 2003 to 2012 and its impact on the oceanic freshwater cycle |
publisher |
John Wiley & Sons |
publishDate |
2014 |
url |
https://hdl.handle.net/1912/6729 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Journal of Geophysical Research: Oceans 119 (2014): 1271-1305 doi:10.1002/2013JC008999 |
op_relation |
https://doi.org/10.1002/2013JC008999 Journal of Geophysical Research: Oceans 119 (2014): 1271-1305 https://hdl.handle.net/1912/6729 doi:10.1002/2013JC008999 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Unported http://creativecommons.org/licenses/by-nc-nd/3.0/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1002/2013JC008999 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
119 |
container_issue |
2 |
container_start_page |
1271 |
op_container_end_page |
1305 |
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1766193303329439744 |