Investigation of the atmospheric mechanisms related to the autumn sea ice and winter circulation link in the Northern Hemisphere
The relationship of Barents-Kara sea ice concentration in October and November with atmospheric circulation in the subsequent winter is examined using reanalysis and observational data. The analyses are performed on data with the 5-year running means removed to reduce the potential effects of slowly...
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Online Access: | https://oceanrep.geomar.de/id/eprint/31720/ https://oceanrep.geomar.de/id/eprint/31720/1/King_2016.pdf https://doi.org/10.1007/s00382-015-2639-5 |
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ftoceanrep:oai:oceanrep.geomar.de:31720 2023-05-15T16:59:50+02:00 Investigation of the atmospheric mechanisms related to the autumn sea ice and winter circulation link in the Northern Hemisphere King, Martin P. Hell, Momme Keenlyside, Noel S. 2016-02 text https://oceanrep.geomar.de/id/eprint/31720/ https://oceanrep.geomar.de/id/eprint/31720/1/King_2016.pdf https://doi.org/10.1007/s00382-015-2639-5 en eng Springer https://oceanrep.geomar.de/id/eprint/31720/1/King_2016.pdf King, M. P., Hell, M. and Keenlyside, N. S. (2016) Investigation of the atmospheric mechanisms related to the autumn sea ice and winter circulation link in the Northern Hemisphere. Climate Dynamics, 46 (3-4). pp. 1185-1195. DOI 10.1007/s00382-015-2639-5 <https://doi.org/10.1007/s00382-015-2639-5>. doi:10.1007/s00382-015-2639-5 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2016 ftoceanrep https://doi.org/10.1007/s00382-015-2639-5 2023-04-07T15:24:10Z The relationship of Barents-Kara sea ice concentration in October and November with atmospheric circulation in the subsequent winter is examined using reanalysis and observational data. The analyses are performed on data with the 5-year running means removed to reduce the potential effects of slowly-varying external driving factors, such as global warming. We show that positive (negative) Barents-Kara sea ice concentration anomaly in autumn is associated with a positive (negative) North Atlantic Oscillation-like (NAO) pattern with lags of up to 3 months. The month-to-month variations in the lag relationships of the atmospheric anomalies related to November sea ice concentration are presented. Further analysis shows that the stratosphere-troposphere interaction may provide the memory in the system: positive (negative) sea ice concentration anomaly in November is associated with a strengthened (weakened) stratospheric polar vortex and these anomalies propagate downward leading to the positive (negative) NAO-like pattern in the late December to early January. This stratosphere mechanism may also play a role for Barents-Kara sea ice anomaly in December, but not for September and October. Consistently, Eliassen-Palm, eddy heat and momentum fluxes suggest that there is strong forcing of the zonal winds in November. Article in Journal/Newspaper Kara Sea North Atlantic North Atlantic oscillation Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Kara Sea Climate Dynamics 46 3-4 1185 1195 |
institution |
Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The relationship of Barents-Kara sea ice concentration in October and November with atmospheric circulation in the subsequent winter is examined using reanalysis and observational data. The analyses are performed on data with the 5-year running means removed to reduce the potential effects of slowly-varying external driving factors, such as global warming. We show that positive (negative) Barents-Kara sea ice concentration anomaly in autumn is associated with a positive (negative) North Atlantic Oscillation-like (NAO) pattern with lags of up to 3 months. The month-to-month variations in the lag relationships of the atmospheric anomalies related to November sea ice concentration are presented. Further analysis shows that the stratosphere-troposphere interaction may provide the memory in the system: positive (negative) sea ice concentration anomaly in November is associated with a strengthened (weakened) stratospheric polar vortex and these anomalies propagate downward leading to the positive (negative) NAO-like pattern in the late December to early January. This stratosphere mechanism may also play a role for Barents-Kara sea ice anomaly in December, but not for September and October. Consistently, Eliassen-Palm, eddy heat and momentum fluxes suggest that there is strong forcing of the zonal winds in November. |
format |
Article in Journal/Newspaper |
author |
King, Martin P. Hell, Momme Keenlyside, Noel S. |
spellingShingle |
King, Martin P. Hell, Momme Keenlyside, Noel S. Investigation of the atmospheric mechanisms related to the autumn sea ice and winter circulation link in the Northern Hemisphere |
author_facet |
King, Martin P. Hell, Momme Keenlyside, Noel S. |
author_sort |
King, Martin P. |
title |
Investigation of the atmospheric mechanisms related to the autumn sea ice and winter circulation link in the Northern Hemisphere |
title_short |
Investigation of the atmospheric mechanisms related to the autumn sea ice and winter circulation link in the Northern Hemisphere |
title_full |
Investigation of the atmospheric mechanisms related to the autumn sea ice and winter circulation link in the Northern Hemisphere |
title_fullStr |
Investigation of the atmospheric mechanisms related to the autumn sea ice and winter circulation link in the Northern Hemisphere |
title_full_unstemmed |
Investigation of the atmospheric mechanisms related to the autumn sea ice and winter circulation link in the Northern Hemisphere |
title_sort |
investigation of the atmospheric mechanisms related to the autumn sea ice and winter circulation link in the northern hemisphere |
publisher |
Springer |
publishDate |
2016 |
url |
https://oceanrep.geomar.de/id/eprint/31720/ https://oceanrep.geomar.de/id/eprint/31720/1/King_2016.pdf https://doi.org/10.1007/s00382-015-2639-5 |
geographic |
Kara Sea |
geographic_facet |
Kara Sea |
genre |
Kara Sea North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
Kara Sea North Atlantic North Atlantic oscillation Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/31720/1/King_2016.pdf King, M. P., Hell, M. and Keenlyside, N. S. (2016) Investigation of the atmospheric mechanisms related to the autumn sea ice and winter circulation link in the Northern Hemisphere. Climate Dynamics, 46 (3-4). pp. 1185-1195. DOI 10.1007/s00382-015-2639-5 <https://doi.org/10.1007/s00382-015-2639-5>. doi:10.1007/s00382-015-2639-5 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00382-015-2639-5 |
container_title |
Climate Dynamics |
container_volume |
46 |
container_issue |
3-4 |
container_start_page |
1185 |
op_container_end_page |
1195 |
_version_ |
1766052268346441728 |