Winter Sea Ice Export From the Beaufort Sea as a Preconditioning Mechanism for Enhanced Summer Melt:A Case Study of 2016
During September 2016 an ice-free Beaufort Sea was observed for only the second time. Like previous regional sea ice minima (1998, 2008, and 2012), seasonal preconditioning of the ice pack toward younger, thinner ice types contributed to premature breakup that accelerated the ice-albedo feedback and...
Published in: | Journal of Geophysical Research: Oceans |
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2019
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Online Access: | https://hdl.handle.net/1983/efdcea76-3029-4c3a-aae9-36480a9081d8 https://research-information.bris.ac.uk/en/publications/efdcea76-3029-4c3a-aae9-36480a9081d8 https://doi.org/10.1029/2019JC015053 https://research-information.bris.ac.uk/ws/files/218643291/Babb_et_al_2019_Journal_of_Geophysical_Research_Oceans.pdf http://www.scopus.com/inward/record.url?scp=85072029934&partnerID=8YFLogxK |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/efdcea76-3029-4c3a-aae9-36480a9081d8 2024-05-19T07:27:48+00:00 Winter Sea Ice Export From the Beaufort Sea as a Preconditioning Mechanism for Enhanced Summer Melt:A Case Study of 2016 Babb, D. G. Landy, J. C. Barber, D. G. Galley, R. J. 2019-09-09 application/pdf https://hdl.handle.net/1983/efdcea76-3029-4c3a-aae9-36480a9081d8 https://research-information.bris.ac.uk/en/publications/efdcea76-3029-4c3a-aae9-36480a9081d8 https://doi.org/10.1029/2019JC015053 https://research-information.bris.ac.uk/ws/files/218643291/Babb_et_al_2019_Journal_of_Geophysical_Research_Oceans.pdf http://www.scopus.com/inward/record.url?scp=85072029934&partnerID=8YFLogxK eng eng https://research-information.bris.ac.uk/en/publications/efdcea76-3029-4c3a-aae9-36480a9081d8 info:eu-repo/semantics/openAccess Babb , D G , Landy , J C , Barber , D G & Galley , R J 2019 , ' Winter Sea Ice Export From the Beaufort Sea as a Preconditioning Mechanism for Enhanced Summer Melt : A Case Study of 2016 ' , Journal of Geophysical Research: Oceans , vol. 124 , no. 9 , pp. 6575-6600 . https://doi.org/10.1029/2019JC015053 Beaufort Sea sea ice sea ice dynamics article 2019 ftubristolcris https://doi.org/10.1029/2019JC015053 2024-04-24T00:00:33Z During September 2016 an ice-free Beaufort Sea was observed for only the second time. Like previous regional sea ice minima (1998, 2008, and 2012), seasonal preconditioning of the ice pack toward younger, thinner ice types contributed to premature breakup that accelerated the ice-albedo feedback and enhanced summer melt. In 2016, anomalously high sea ice export and ice pack divergence during February and April promoted the unusual widespread formation of new ice within the Beaufort. Thin ice types reached a peak regional concentration of 30% in March, when the ice cover is typically dominated by thick first-year and multiyear sea ice. Combined CryoSat-2 and Soil Moisture and Ocean Salinity (SMOS) data indicate that the regional ice volume plateaued from December to March as export offset ice growth and ultimately culminated in a −30% volume anomaly in April 2016. This atypically thin ice cover broke up 7 weeks earlier than average, with open water forming not only within coastal flaw leads but also within the offshore pack ice. By July 2016, vast areas of open water within the highly fractured ice cover accelerated the ice-albedo feedback and led to rapid melt. Though maintaining a partial ice cover during summer throughout the observational record, significant negative trends in September sea ice area within the Beaufort are now punctuated by two recent ice-free Septembers (2012 and 2016). As the Beaufort transitions toward a seasonally ice-free sea, we examine the role of winter preconditioning through sea ice transport and its growing importance within an increasingly seasonal and mobile Arctic ice cover. Article in Journal/Newspaper albedo Arctic Beaufort Sea ice pack Sea ice University of Bristol: Bristol Research Journal of Geophysical Research: Oceans 124 9 6575 6600 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
Beaufort Sea sea ice sea ice dynamics |
spellingShingle |
Beaufort Sea sea ice sea ice dynamics Babb, D. G. Landy, J. C. Barber, D. G. Galley, R. J. Winter Sea Ice Export From the Beaufort Sea as a Preconditioning Mechanism for Enhanced Summer Melt:A Case Study of 2016 |
topic_facet |
Beaufort Sea sea ice sea ice dynamics |
description |
During September 2016 an ice-free Beaufort Sea was observed for only the second time. Like previous regional sea ice minima (1998, 2008, and 2012), seasonal preconditioning of the ice pack toward younger, thinner ice types contributed to premature breakup that accelerated the ice-albedo feedback and enhanced summer melt. In 2016, anomalously high sea ice export and ice pack divergence during February and April promoted the unusual widespread formation of new ice within the Beaufort. Thin ice types reached a peak regional concentration of 30% in March, when the ice cover is typically dominated by thick first-year and multiyear sea ice. Combined CryoSat-2 and Soil Moisture and Ocean Salinity (SMOS) data indicate that the regional ice volume plateaued from December to March as export offset ice growth and ultimately culminated in a −30% volume anomaly in April 2016. This atypically thin ice cover broke up 7 weeks earlier than average, with open water forming not only within coastal flaw leads but also within the offshore pack ice. By July 2016, vast areas of open water within the highly fractured ice cover accelerated the ice-albedo feedback and led to rapid melt. Though maintaining a partial ice cover during summer throughout the observational record, significant negative trends in September sea ice area within the Beaufort are now punctuated by two recent ice-free Septembers (2012 and 2016). As the Beaufort transitions toward a seasonally ice-free sea, we examine the role of winter preconditioning through sea ice transport and its growing importance within an increasingly seasonal and mobile Arctic ice cover. |
format |
Article in Journal/Newspaper |
author |
Babb, D. G. Landy, J. C. Barber, D. G. Galley, R. J. |
author_facet |
Babb, D. G. Landy, J. C. Barber, D. G. Galley, R. J. |
author_sort |
Babb, D. G. |
title |
Winter Sea Ice Export From the Beaufort Sea as a Preconditioning Mechanism for Enhanced Summer Melt:A Case Study of 2016 |
title_short |
Winter Sea Ice Export From the Beaufort Sea as a Preconditioning Mechanism for Enhanced Summer Melt:A Case Study of 2016 |
title_full |
Winter Sea Ice Export From the Beaufort Sea as a Preconditioning Mechanism for Enhanced Summer Melt:A Case Study of 2016 |
title_fullStr |
Winter Sea Ice Export From the Beaufort Sea as a Preconditioning Mechanism for Enhanced Summer Melt:A Case Study of 2016 |
title_full_unstemmed |
Winter Sea Ice Export From the Beaufort Sea as a Preconditioning Mechanism for Enhanced Summer Melt:A Case Study of 2016 |
title_sort |
winter sea ice export from the beaufort sea as a preconditioning mechanism for enhanced summer melt:a case study of 2016 |
publishDate |
2019 |
url |
https://hdl.handle.net/1983/efdcea76-3029-4c3a-aae9-36480a9081d8 https://research-information.bris.ac.uk/en/publications/efdcea76-3029-4c3a-aae9-36480a9081d8 https://doi.org/10.1029/2019JC015053 https://research-information.bris.ac.uk/ws/files/218643291/Babb_et_al_2019_Journal_of_Geophysical_Research_Oceans.pdf http://www.scopus.com/inward/record.url?scp=85072029934&partnerID=8YFLogxK |
genre |
albedo Arctic Beaufort Sea ice pack Sea ice |
genre_facet |
albedo Arctic Beaufort Sea ice pack Sea ice |
op_source |
Babb , D G , Landy , J C , Barber , D G & Galley , R J 2019 , ' Winter Sea Ice Export From the Beaufort Sea as a Preconditioning Mechanism for Enhanced Summer Melt : A Case Study of 2016 ' , Journal of Geophysical Research: Oceans , vol. 124 , no. 9 , pp. 6575-6600 . https://doi.org/10.1029/2019JC015053 |
op_relation |
https://research-information.bris.ac.uk/en/publications/efdcea76-3029-4c3a-aae9-36480a9081d8 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2019JC015053 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
124 |
container_issue |
9 |
container_start_page |
6575 |
op_container_end_page |
6600 |
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1799469104937041920 |