Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation
The response of the Arctic atmosphere to low and high sea ice concentration phases based on European Center for Medium-Range Weather Forecast (ECMWF) Re-Analysis Interim (ERA-Interim) atmospheric data and Hadley Centre’s sea ice dataset (HadISST1) from 1989 until 2010 has been studied. Time slices o...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.667.169 2023-05-15T14:41:58+02:00 Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation R. Jaiser K. Dethloff D. Handorf A. Rinke J. Cohen The Pennsylvania State University CiteSeerX Archives http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.667.169 http://www.tellusa.net/index.php/tellusa/article/download/11595/pdf/ en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.667.169 http://www.tellusa.net/index.php/tellusa/article/download/11595/pdf/ Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.tellusa.net/index.php/tellusa/article/download/11595/pdf/ Arctic sea ice atmospheric circulation baroclinic-planetary interactions teleconections text ftciteseerx 2016-01-08T17:08:58Z The response of the Arctic atmosphere to low and high sea ice concentration phases based on European Center for Medium-Range Weather Forecast (ECMWF) Re-Analysis Interim (ERA-Interim) atmospheric data and Hadley Centre’s sea ice dataset (HadISST1) from 1989 until 2010 has been studied. Time slices of winter atmospheric circulation with high (19902000) and low (20012010) sea ice concentration in the preceding August/September have been analysed with respect to tropospheric interactions between planetary and baroclinic waves. It is shown that a changed sea ice concentration over the Arctic Ocean impacts differently the development of synoptic and planetary atmospheric circulation systems. During the low ice phase, stronger heat release to the atmosphere over the Arctic Ocean reduces the atmospheric vertical static stability. This leads to an earlier onset of baroclinic instability that further modulates the non-linear interactions between baroclinic wave energy fluxes on time scales of 2.56 d and planetary scales of 1090 d. Our analysis suggests that Arctic sea ice concentration changes exert a remote impact on the large-scale atmospheric circulation during winter, exhibiting a barotropic structure with similar patterns of pressure anomalies at the surface and in the mid-troposphere. These are connected to pronounced planetary wave train changes notably over the Text Arctic Arctic Ocean Sea ice Unknown Arctic Arctic Ocean |
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Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Arctic sea ice atmospheric circulation baroclinic-planetary interactions teleconections |
spellingShingle |
Arctic sea ice atmospheric circulation baroclinic-planetary interactions teleconections R. Jaiser K. Dethloff D. Handorf A. Rinke J. Cohen Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation |
topic_facet |
Arctic sea ice atmospheric circulation baroclinic-planetary interactions teleconections |
description |
The response of the Arctic atmosphere to low and high sea ice concentration phases based on European Center for Medium-Range Weather Forecast (ECMWF) Re-Analysis Interim (ERA-Interim) atmospheric data and Hadley Centre’s sea ice dataset (HadISST1) from 1989 until 2010 has been studied. Time slices of winter atmospheric circulation with high (19902000) and low (20012010) sea ice concentration in the preceding August/September have been analysed with respect to tropospheric interactions between planetary and baroclinic waves. It is shown that a changed sea ice concentration over the Arctic Ocean impacts differently the development of synoptic and planetary atmospheric circulation systems. During the low ice phase, stronger heat release to the atmosphere over the Arctic Ocean reduces the atmospheric vertical static stability. This leads to an earlier onset of baroclinic instability that further modulates the non-linear interactions between baroclinic wave energy fluxes on time scales of 2.56 d and planetary scales of 1090 d. Our analysis suggests that Arctic sea ice concentration changes exert a remote impact on the large-scale atmospheric circulation during winter, exhibiting a barotropic structure with similar patterns of pressure anomalies at the surface and in the mid-troposphere. These are connected to pronounced planetary wave train changes notably over the |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
R. Jaiser K. Dethloff D. Handorf A. Rinke J. Cohen |
author_facet |
R. Jaiser K. Dethloff D. Handorf A. Rinke J. Cohen |
author_sort |
R. Jaiser |
title |
Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation |
title_short |
Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation |
title_full |
Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation |
title_fullStr |
Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation |
title_full_unstemmed |
Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation |
title_sort |
impact of sea ice cover changes on the northern hemisphere atmospheric winter circulation |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.667.169 http://www.tellusa.net/index.php/tellusa/article/download/11595/pdf/ |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Ocean Sea ice |
op_source |
http://www.tellusa.net/index.php/tellusa/article/download/11595/pdf/ |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.667.169 http://www.tellusa.net/index.php/tellusa/article/download/11595/pdf/ |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766313658611138560 |