New insight into the influence of the greenland high on summer arctic sea ice
The Greenland high (GL-high) coincides with a local center of action of the summer North Atlantic Oscillation and is known to have significant influence on Greenland ice sheet melting and summer Arctic sea ice. However, the mechanism behind the influence on regional Arctic sea ice is not yet clear....
Published in: | Environmental Research Letters |
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2022
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Online Access: | https://doi.org/10.1088/1748-9326/ac7ac6 https://nbn-resolving.org/urn:nbn:de:gbv:8:3-2022-00543-4 https://macau.uni-kiel.de/receive/macau_mods_00002956 https://macau.uni-kiel.de/servlets/MCRFileNodeServlet/macau_derivate_00004106/Wang_2022_Environ._Res._Lett._17_074033.pdf |
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ftunivkiel:oai:macau.uni-kiel.de:macau_mods_00002956 2024-06-23T07:45:06+00:00 New insight into the influence of the greenland high on summer arctic sea ice Wang, Shaoyin Liu, Jiping Li, Xinyu Ye, Yufang Greatbatch, Richard John Chen, Zhuoqi Cheng, Xiaoyan 2022 https://doi.org/10.1088/1748-9326/ac7ac6 https://nbn-resolving.org/urn:nbn:de:gbv:8:3-2022-00543-4 https://macau.uni-kiel.de/receive/macau_mods_00002956 https://macau.uni-kiel.de/servlets/MCRFileNodeServlet/macau_derivate_00004106/Wang_2022_Environ._Res._Lett._17_074033.pdf eng eng Environmental Research Letters -- 1748-9326 https://doi.org/10.1088/1748-9326/ac7ac6 https://nbn-resolving.org/urn:nbn:de:gbv:8:3-2022-00543-4 https://macau.uni-kiel.de/receive/macau_mods_00002956 https://macau.uni-kiel.de/servlets/MCRFileNodeServlet/macau_derivate_00004106/Wang_2022_Environ._Res._Lett._17_074033.pdf https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess article ScholarlyArticle ddc:550 Published Version Greenland high summer Arctic sea ice shortwave radiation wind-driven ice drift article Text doc-type:Article 2022 ftunivkiel https://doi.org/10.1088/1748-9326/ac7ac6 2024-06-12T14:18:24Z The Greenland high (GL-high) coincides with a local center of action of the summer North Atlantic Oscillation and is known to have significant influence on Greenland ice sheet melting and summer Arctic sea ice. However, the mechanism behind the influence on regional Arctic sea ice is not yet clear. In this study, using reanalysis datasets and satellite observations, the influence of the GL-high in early summer on Arctic sea ice variability, and the mechanism behind it, are investigated. In response to an intensified GL-high, sea ice over the Beaufort Sea shows significant decline in both concentration and thickness from June through September. This decline in sea ice is primarily due to thermodynamic and mechanical redistribution processes. Firstly, the intensified GL-high increases subsidence over the Canadian Basin, leading to an increase in surface air temperature by adiabatic heating, and a substantial decrease in cloud cover and thus increased downward shortwave radiation. Secondly, the intensified GL-high increases easterly wind frequency and wind speed over the Beaufort Sea, pushing sea ice over the Canadian Basin away from the coastlines. Both processes contribute to an increase in open water areas, amplifying ice–albedo feedback and leading to sea ice decline. The mechanism identified here differs from previous studies that focused on northward moisture and heat transport and the associated increase in downward longwave radiation over the Arctic. The impact of the GL-high on the regional sea ice (also Arctic sea ice extent) can persist from June into fall, providing an important source for seasonal prediction of Arctic sea ice. The GL-high has an upward trend and reached a record high in 2012 that coincided with a record minimum summer Arctic sea ice extent, and has strong implications for summer Arctic sea ice changes. Article in Journal/Newspaper albedo Arctic Beaufort Sea Greenland Ice Sheet North Atlantic North Atlantic oscillation Sea ice MACAU: Open Access Repository of Kiel University Arctic Greenland Environmental Research Letters 17 7 074033 |
institution |
Open Polar |
collection |
MACAU: Open Access Repository of Kiel University |
op_collection_id |
ftunivkiel |
language |
English |
topic |
article ScholarlyArticle ddc:550 Published Version Greenland high summer Arctic sea ice shortwave radiation wind-driven ice drift |
spellingShingle |
article ScholarlyArticle ddc:550 Published Version Greenland high summer Arctic sea ice shortwave radiation wind-driven ice drift Wang, Shaoyin Liu, Jiping Li, Xinyu Ye, Yufang Greatbatch, Richard John Chen, Zhuoqi Cheng, Xiaoyan New insight into the influence of the greenland high on summer arctic sea ice |
topic_facet |
article ScholarlyArticle ddc:550 Published Version Greenland high summer Arctic sea ice shortwave radiation wind-driven ice drift |
description |
The Greenland high (GL-high) coincides with a local center of action of the summer North Atlantic Oscillation and is known to have significant influence on Greenland ice sheet melting and summer Arctic sea ice. However, the mechanism behind the influence on regional Arctic sea ice is not yet clear. In this study, using reanalysis datasets and satellite observations, the influence of the GL-high in early summer on Arctic sea ice variability, and the mechanism behind it, are investigated. In response to an intensified GL-high, sea ice over the Beaufort Sea shows significant decline in both concentration and thickness from June through September. This decline in sea ice is primarily due to thermodynamic and mechanical redistribution processes. Firstly, the intensified GL-high increases subsidence over the Canadian Basin, leading to an increase in surface air temperature by adiabatic heating, and a substantial decrease in cloud cover and thus increased downward shortwave radiation. Secondly, the intensified GL-high increases easterly wind frequency and wind speed over the Beaufort Sea, pushing sea ice over the Canadian Basin away from the coastlines. Both processes contribute to an increase in open water areas, amplifying ice–albedo feedback and leading to sea ice decline. The mechanism identified here differs from previous studies that focused on northward moisture and heat transport and the associated increase in downward longwave radiation over the Arctic. The impact of the GL-high on the regional sea ice (also Arctic sea ice extent) can persist from June into fall, providing an important source for seasonal prediction of Arctic sea ice. The GL-high has an upward trend and reached a record high in 2012 that coincided with a record minimum summer Arctic sea ice extent, and has strong implications for summer Arctic sea ice changes. |
format |
Article in Journal/Newspaper |
author |
Wang, Shaoyin Liu, Jiping Li, Xinyu Ye, Yufang Greatbatch, Richard John Chen, Zhuoqi Cheng, Xiaoyan |
author_facet |
Wang, Shaoyin Liu, Jiping Li, Xinyu Ye, Yufang Greatbatch, Richard John Chen, Zhuoqi Cheng, Xiaoyan |
author_sort |
Wang, Shaoyin |
title |
New insight into the influence of the greenland high on summer arctic sea ice |
title_short |
New insight into the influence of the greenland high on summer arctic sea ice |
title_full |
New insight into the influence of the greenland high on summer arctic sea ice |
title_fullStr |
New insight into the influence of the greenland high on summer arctic sea ice |
title_full_unstemmed |
New insight into the influence of the greenland high on summer arctic sea ice |
title_sort |
new insight into the influence of the greenland high on summer arctic sea ice |
publishDate |
2022 |
url |
https://doi.org/10.1088/1748-9326/ac7ac6 https://nbn-resolving.org/urn:nbn:de:gbv:8:3-2022-00543-4 https://macau.uni-kiel.de/receive/macau_mods_00002956 https://macau.uni-kiel.de/servlets/MCRFileNodeServlet/macau_derivate_00004106/Wang_2022_Environ._Res._Lett._17_074033.pdf |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
albedo Arctic Beaufort Sea Greenland Ice Sheet North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
albedo Arctic Beaufort Sea Greenland Ice Sheet North Atlantic North Atlantic oscillation Sea ice |
op_relation |
Environmental Research Letters -- 1748-9326 https://doi.org/10.1088/1748-9326/ac7ac6 https://nbn-resolving.org/urn:nbn:de:gbv:8:3-2022-00543-4 https://macau.uni-kiel.de/receive/macau_mods_00002956 https://macau.uni-kiel.de/servlets/MCRFileNodeServlet/macau_derivate_00004106/Wang_2022_Environ._Res._Lett._17_074033.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1088/1748-9326/ac7ac6 |
container_title |
Environmental Research Letters |
container_volume |
17 |
container_issue |
7 |
container_start_page |
074033 |
_version_ |
1802651444539555840 |