The Recent Decline of the Arctic Summer Sea-Ice Cover in the Context of Internal Climate Variability
By means of a 21-year simulation of a coupled regional pan-Arctic atmosphere-ocean-ice model for the 1980's and 1990's and comparison of the model results with SSM/I satellite-derived sea-ice concentrations, the patterns of maximum amplitude of interannual variability of the Arctic summer...
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Bentham Science Publishers Ltd.
2008
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crbenthamsciepub:10.2174/1874282300802010091 2023-09-05T13:16:01+02:00 The Recent Decline of the Arctic Summer Sea-Ice Cover in the Context of Internal Climate Variability Dorn, W. Dethloff, K. Rinke, A. Kurgansky, M. 2008 http://dx.doi.org/10.2174/1874282300802010091 https://openatmosphericsciencejournal.com/contents/volumes/V2/TOASCJ-2-91/TOASCJ-2-91.pdf https://openatmosphericsciencejournal.com/contents/volumes/V2/TOASCJ-2-91/TOASCJ-2-91.xml en eng Bentham Science Publishers Ltd. https://creativecommons.org/licenses/by/4.0/legalcode The Open Atmospheric Science Journal volume 2, issue 1, page 91-100 ISSN 1874-2823 Atmospheric Science journal-article 2008 crbenthamsciepub https://doi.org/10.2174/1874282300802010091 2023-08-11T15:28:47Z By means of a 21-year simulation of a coupled regional pan-Arctic atmosphere-ocean-ice model for the 1980's and 1990's and comparison of the model results with SSM/I satellite-derived sea-ice concentrations, the patterns of maximum amplitude of interannual variability of the Arctic summer sea-ice cover are revealed. They are shown to concentrate beyond an area enclosed by an isopleth of barotropic planetary potential vorticity that marks the edge of the cyclonic rim current around the deep inner Arctic basin. It is argued that the propagation of the interannual variability signal farther into the inner Arctic basin is hindered by the dynamic isolation of upper Arctic Ocean and the high summer cloudiness usually appearing in the central Arctic. The thinning of the Arctic sea-ice cover in recent years is likely to be jointly responsible for its exceptionally strong decrease in summer 2007 when sea-ice decline was favored by anomalously high atmospheric pressure over the western Arctic Ocean, which can be regarded as a typical feature for years with low sea-ice extent. In addition, unusually low cloud cover appeared in summer 2007, which led to substantial warming of the upper ocean. It is hypothesized that the coincidence of several favorable factors for low sea-ice extent is responsible for this extreme event. Owing to the important role of internal climate variability in the recent decline of sea ice, a temporal return to previous conditions or stabilization at the current level can not be excluded just as further decline. Article in Journal/Newspaper Arctic Basin Arctic Arctic Ocean Sea ice Bentham Science Publishers (via Crossref) Arctic Arctic Ocean The Open Atmospheric Science Journal 2 1 91 100 |
institution |
Open Polar |
collection |
Bentham Science Publishers (via Crossref) |
op_collection_id |
crbenthamsciepub |
language |
English |
topic |
Atmospheric Science |
spellingShingle |
Atmospheric Science Dorn, W. Dethloff, K. Rinke, A. Kurgansky, M. The Recent Decline of the Arctic Summer Sea-Ice Cover in the Context of Internal Climate Variability |
topic_facet |
Atmospheric Science |
description |
By means of a 21-year simulation of a coupled regional pan-Arctic atmosphere-ocean-ice model for the 1980's and 1990's and comparison of the model results with SSM/I satellite-derived sea-ice concentrations, the patterns of maximum amplitude of interannual variability of the Arctic summer sea-ice cover are revealed. They are shown to concentrate beyond an area enclosed by an isopleth of barotropic planetary potential vorticity that marks the edge of the cyclonic rim current around the deep inner Arctic basin. It is argued that the propagation of the interannual variability signal farther into the inner Arctic basin is hindered by the dynamic isolation of upper Arctic Ocean and the high summer cloudiness usually appearing in the central Arctic. The thinning of the Arctic sea-ice cover in recent years is likely to be jointly responsible for its exceptionally strong decrease in summer 2007 when sea-ice decline was favored by anomalously high atmospheric pressure over the western Arctic Ocean, which can be regarded as a typical feature for years with low sea-ice extent. In addition, unusually low cloud cover appeared in summer 2007, which led to substantial warming of the upper ocean. It is hypothesized that the coincidence of several favorable factors for low sea-ice extent is responsible for this extreme event. Owing to the important role of internal climate variability in the recent decline of sea ice, a temporal return to previous conditions or stabilization at the current level can not be excluded just as further decline. |
format |
Article in Journal/Newspaper |
author |
Dorn, W. Dethloff, K. Rinke, A. Kurgansky, M. |
author_facet |
Dorn, W. Dethloff, K. Rinke, A. Kurgansky, M. |
author_sort |
Dorn, W. |
title |
The Recent Decline of the Arctic Summer Sea-Ice Cover in the Context of Internal Climate Variability |
title_short |
The Recent Decline of the Arctic Summer Sea-Ice Cover in the Context of Internal Climate Variability |
title_full |
The Recent Decline of the Arctic Summer Sea-Ice Cover in the Context of Internal Climate Variability |
title_fullStr |
The Recent Decline of the Arctic Summer Sea-Ice Cover in the Context of Internal Climate Variability |
title_full_unstemmed |
The Recent Decline of the Arctic Summer Sea-Ice Cover in the Context of Internal Climate Variability |
title_sort |
recent decline of the arctic summer sea-ice cover in the context of internal climate variability |
publisher |
Bentham Science Publishers Ltd. |
publishDate |
2008 |
url |
http://dx.doi.org/10.2174/1874282300802010091 https://openatmosphericsciencejournal.com/contents/volumes/V2/TOASCJ-2-91/TOASCJ-2-91.pdf https://openatmosphericsciencejournal.com/contents/volumes/V2/TOASCJ-2-91/TOASCJ-2-91.xml |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Basin Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Basin Arctic Arctic Ocean Sea ice |
op_source |
The Open Atmospheric Science Journal volume 2, issue 1, page 91-100 ISSN 1874-2823 |
op_rights |
https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.2174/1874282300802010091 |
container_title |
The Open Atmospheric Science Journal |
container_volume |
2 |
container_issue |
1 |
container_start_page |
91 |
op_container_end_page |
100 |
_version_ |
1776197767787446272 |