Analysis of a link between fall Arctic sea ice concentration and atmospheric patterns in the following winter
The impact of anomalous fall Arctic sea ice concentrations (SICs) on atmospheric patterns in the following winter is revisited by analysing results for two time periods: the most recent, satellite-era period (1979–2010) and a longer time-period (1950–2010). On the basis of September SICs for each ti...
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ftawi:oai:epic.awi.de:31669 2023-05-15T14:26:19+02:00 Analysis of a link between fall Arctic sea ice concentration and atmospheric patterns in the following winter Hopsch, Susanna Cohen, Judah Dethloff, Klaus 2012-05-31 https://epic.awi.de/id/eprint/31669/ https://hdl.handle.net/10013/epic.40389 unknown WILEY-BLACKWELL PUBLISHING Hopsch, S. , Cohen, J. and Dethloff, K. (2012) Analysis of a link between fall Arctic sea ice concentration and atmospheric patterns in the following winter , Tellus Series A-Dynamic Meteorology and Oceanography, 64 . doi:10.3402/tellusa.v64i0.18624 <https://doi.org/10.3402/tellusa.v64i0.18624> , hdl:10013/epic.40389 EPIC3Tellus Series A-Dynamic Meteorology and Oceanography, WILEY-BLACKWELL PUBLISHING, 64, ISSN: 0280-6495 Article peerRev 2012 ftawi https://doi.org/10.3402/tellusa.v64i0.18624 2021-12-24T15:38:09Z The impact of anomalous fall Arctic sea ice concentrations (SICs) on atmospheric patterns in the following winter is revisited by analysing results for two time periods: the most recent, satellite-era period (1979–2010) and a longer time-period (1950–2010). On the basis of September SICs for each time-period, an index was constructed which was used to identify anomalous high/low SIC years for both the original, as well as for the linearly detrended sea ice index. Identified years were then used to derive composites for the following winter's monthly atmospheric variables. Mid-troposphere geopotential height composites for winter months are in general reminiscent of the North Atlantic Oscillation pattern with high latitude maximum shifted towards the Barents Sea. Also, lower troposphere temperatures indicate the presence of cooler conditions over the continents during low SIC years. However, differences in the composite patterns are significant only for areas with limited spatial extent. While suggested pathways in previously published studies seem reasonable, our results show that these findings are not yet robust enough from a statistical significance perspective. More data (e.g. provided by longer, climate-quality reanalysis datasets) are needed before conclusions of impacts and feedbacks can be drawn with certainty. Article in Journal/Newspaper Arctic Arctic Barents Sea North Atlantic North Atlantic oscillation Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Barents Sea Tellus A: Dynamic Meteorology and Oceanography 64 1 18624 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
The impact of anomalous fall Arctic sea ice concentrations (SICs) on atmospheric patterns in the following winter is revisited by analysing results for two time periods: the most recent, satellite-era period (1979–2010) and a longer time-period (1950–2010). On the basis of September SICs for each time-period, an index was constructed which was used to identify anomalous high/low SIC years for both the original, as well as for the linearly detrended sea ice index. Identified years were then used to derive composites for the following winter's monthly atmospheric variables. Mid-troposphere geopotential height composites for winter months are in general reminiscent of the North Atlantic Oscillation pattern with high latitude maximum shifted towards the Barents Sea. Also, lower troposphere temperatures indicate the presence of cooler conditions over the continents during low SIC years. However, differences in the composite patterns are significant only for areas with limited spatial extent. While suggested pathways in previously published studies seem reasonable, our results show that these findings are not yet robust enough from a statistical significance perspective. More data (e.g. provided by longer, climate-quality reanalysis datasets) are needed before conclusions of impacts and feedbacks can be drawn with certainty. |
format |
Article in Journal/Newspaper |
author |
Hopsch, Susanna Cohen, Judah Dethloff, Klaus |
spellingShingle |
Hopsch, Susanna Cohen, Judah Dethloff, Klaus Analysis of a link between fall Arctic sea ice concentration and atmospheric patterns in the following winter |
author_facet |
Hopsch, Susanna Cohen, Judah Dethloff, Klaus |
author_sort |
Hopsch, Susanna |
title |
Analysis of a link between fall Arctic sea ice concentration and atmospheric patterns in the following winter |
title_short |
Analysis of a link between fall Arctic sea ice concentration and atmospheric patterns in the following winter |
title_full |
Analysis of a link between fall Arctic sea ice concentration and atmospheric patterns in the following winter |
title_fullStr |
Analysis of a link between fall Arctic sea ice concentration and atmospheric patterns in the following winter |
title_full_unstemmed |
Analysis of a link between fall Arctic sea ice concentration and atmospheric patterns in the following winter |
title_sort |
analysis of a link between fall arctic sea ice concentration and atmospheric patterns in the following winter |
publisher |
WILEY-BLACKWELL PUBLISHING |
publishDate |
2012 |
url |
https://epic.awi.de/id/eprint/31669/ https://hdl.handle.net/10013/epic.40389 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Arctic Barents Sea North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
Arctic Arctic Barents Sea North Atlantic North Atlantic oscillation Sea ice |
op_source |
EPIC3Tellus Series A-Dynamic Meteorology and Oceanography, WILEY-BLACKWELL PUBLISHING, 64, ISSN: 0280-6495 |
op_relation |
Hopsch, S. , Cohen, J. and Dethloff, K. (2012) Analysis of a link between fall Arctic sea ice concentration and atmospheric patterns in the following winter , Tellus Series A-Dynamic Meteorology and Oceanography, 64 . doi:10.3402/tellusa.v64i0.18624 <https://doi.org/10.3402/tellusa.v64i0.18624> , hdl:10013/epic.40389 |
op_doi |
https://doi.org/10.3402/tellusa.v64i0.18624 |
container_title |
Tellus A: Dynamic Meteorology and Oceanography |
container_volume |
64 |
container_issue |
1 |
container_start_page |
18624 |
_version_ |
1766298835110330368 |