NAO influence on sea ice extent in the Eurasian coastal region
Influence of winter pre-conditioning of Arctic sea ice due to atmospheric forcing associated with the North Atlantic Oscillation (NAO) on the reduction in summer sea ice extent is studied. It is found that winter sea ice is about 50 cm thinner in high-NAO index years than in low-NAO index years in t...
Published in: | Geophysical Research Letters |
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Format: | Article in Journal/Newspaper |
Language: | English |
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American Geophysical Union
2002
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Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-004-489 https://doi.org/10.1029/2001GL014293 |
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ftncar:oai:drupal-site.org:articles_7019 2023-10-01T03:51:06+02:00 NAO influence on sea ice extent in the Eurasian coastal region Hu, Aixue (author) Rooth, C. (author) Bleck, R. (author) Deser, Clara (author) 2002-11-20 http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-004-489 https://doi.org/10.1029/2001GL014293 en eng American Geophysical Union Geophysical Research Letters http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-004-489 doi:10.1029/2001GL014293 ark:/85065/d7gq6z0k Copyright 2002 American Geophysical Union. Numerical modeling Arctic and Antarctic oceanography Ice mechanics Text article 2002 ftncar https://doi.org/10.1029/2001GL014293 2023-09-04T18:22:15Z Influence of winter pre-conditioning of Arctic sea ice due to atmospheric forcing associated with the North Atlantic Oscillation (NAO) on the reduction in summer sea ice extent is studied. It is found that winter sea ice is about 50 cm thinner in high-NAO index years than in low-NAO index years in the Eurasian coastal region mainly due to stronger wind-driven ice export. The thinner wintertime ice combined with strengthened southerlies in spring promotes an earlier break-up of the ice pack in the Eurasian coastal region, resulting in significant sea ice export. The higher ice efflux, in turn, further reduces the ice compactness, thus more solar radiation is absorbed by the oceans which enhances the summer melting process. Thus, winter and spring atmospheric anomalies associated with the positive phase of the NAO may underlie the reduction of summer sea ice extent observed during the 1980s and 1990s. Article in Journal/Newspaper Antarc* Antarctic Arctic ice pack North Atlantic North Atlantic oscillation Sea ice OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Antarctic Arctic Geophysical Research Letters 29 22 10-1 10-4 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
topic |
Numerical modeling Arctic and Antarctic oceanography Ice mechanics |
spellingShingle |
Numerical modeling Arctic and Antarctic oceanography Ice mechanics NAO influence on sea ice extent in the Eurasian coastal region |
topic_facet |
Numerical modeling Arctic and Antarctic oceanography Ice mechanics |
description |
Influence of winter pre-conditioning of Arctic sea ice due to atmospheric forcing associated with the North Atlantic Oscillation (NAO) on the reduction in summer sea ice extent is studied. It is found that winter sea ice is about 50 cm thinner in high-NAO index years than in low-NAO index years in the Eurasian coastal region mainly due to stronger wind-driven ice export. The thinner wintertime ice combined with strengthened southerlies in spring promotes an earlier break-up of the ice pack in the Eurasian coastal region, resulting in significant sea ice export. The higher ice efflux, in turn, further reduces the ice compactness, thus more solar radiation is absorbed by the oceans which enhances the summer melting process. Thus, winter and spring atmospheric anomalies associated with the positive phase of the NAO may underlie the reduction of summer sea ice extent observed during the 1980s and 1990s. |
author2 |
Hu, Aixue (author) Rooth, C. (author) Bleck, R. (author) Deser, Clara (author) |
format |
Article in Journal/Newspaper |
title |
NAO influence on sea ice extent in the Eurasian coastal region |
title_short |
NAO influence on sea ice extent in the Eurasian coastal region |
title_full |
NAO influence on sea ice extent in the Eurasian coastal region |
title_fullStr |
NAO influence on sea ice extent in the Eurasian coastal region |
title_full_unstemmed |
NAO influence on sea ice extent in the Eurasian coastal region |
title_sort |
nao influence on sea ice extent in the eurasian coastal region |
publisher |
American Geophysical Union |
publishDate |
2002 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-004-489 https://doi.org/10.1029/2001GL014293 |
geographic |
Antarctic Arctic |
geographic_facet |
Antarctic Arctic |
genre |
Antarc* Antarctic Arctic ice pack North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
Antarc* Antarctic Arctic ice pack North Atlantic North Atlantic oscillation Sea ice |
op_relation |
Geophysical Research Letters http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-004-489 doi:10.1029/2001GL014293 ark:/85065/d7gq6z0k |
op_rights |
Copyright 2002 American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2001GL014293 |
container_title |
Geophysical Research Letters |
container_volume |
29 |
container_issue |
22 |
container_start_page |
10-1 |
op_container_end_page |
10-4 |
_version_ |
1778531690332815360 |