Multi-regime states of arctic atmospheric circulation
Ensemble simulations of arctic circulation can develop multiple dynamical regimes. We use ensemble simulations of June -- December 2007 by the WRF-ARW model to examine regime development, and to understand the differences in the atmospheric circulation caused by changes in sea ice and how it is repr...
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ftiowastateuniv:oai:lib.dr.iastate.edu:etd-3065 2023-05-15T14:42:09+02:00 Multi-regime states of arctic atmospheric circulation Fisel, Brandon Joshua 2011-01-01T08:00:00Z application/pdf https://lib.dr.iastate.edu/etd/12061 https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=3065&context=etd en eng Iowa State University Digital Repository https://lib.dr.iastate.edu/etd/12061 https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=3065&context=etd Graduate Theses and Dissertations arctic atmospheric circulation climate dynamics dynamic regime polar meteorology sea ice Earth Sciences text 2011 ftiowastateuniv 2018-11-26T01:23:34Z Ensemble simulations of arctic circulation can develop multiple dynamical regimes. We use ensemble simulations of June -- December 2007 by the WRF-ARW model to examine regime development, and to understand the differences in the atmospheric circulation caused by changes in sea ice and how it is represented. Multiple regimes are common in our ensemble simulations, although there are differences through the period. There is a slight tendency for two or three regimes to be preferred more in June-July-August than October-November-December. September has the fewest multiple-regime periods. September is also the month of sea-ice minimum, suggesting that open ocean may inhibit the occurrence of multiple regimes in ensemble simulations compared to periods when substantial sea ice is present. Differences in sea-ice treatment have little influence on model results. The regime behavior occurring here suggests that as future summer ice cover wanes in the Arctic, the predictability of the atmosphere may increase. Text Arctic Sea ice Digital Repository @ Iowa State University Arctic |
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Open Polar |
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Digital Repository @ Iowa State University |
op_collection_id |
ftiowastateuniv |
language |
English |
topic |
arctic atmospheric circulation climate dynamics dynamic regime polar meteorology sea ice Earth Sciences |
spellingShingle |
arctic atmospheric circulation climate dynamics dynamic regime polar meteorology sea ice Earth Sciences Fisel, Brandon Joshua Multi-regime states of arctic atmospheric circulation |
topic_facet |
arctic atmospheric circulation climate dynamics dynamic regime polar meteorology sea ice Earth Sciences |
description |
Ensemble simulations of arctic circulation can develop multiple dynamical regimes. We use ensemble simulations of June -- December 2007 by the WRF-ARW model to examine regime development, and to understand the differences in the atmospheric circulation caused by changes in sea ice and how it is represented. Multiple regimes are common in our ensemble simulations, although there are differences through the period. There is a slight tendency for two or three regimes to be preferred more in June-July-August than October-November-December. September has the fewest multiple-regime periods. September is also the month of sea-ice minimum, suggesting that open ocean may inhibit the occurrence of multiple regimes in ensemble simulations compared to periods when substantial sea ice is present. Differences in sea-ice treatment have little influence on model results. The regime behavior occurring here suggests that as future summer ice cover wanes in the Arctic, the predictability of the atmosphere may increase. |
format |
Text |
author |
Fisel, Brandon Joshua |
author_facet |
Fisel, Brandon Joshua |
author_sort |
Fisel, Brandon Joshua |
title |
Multi-regime states of arctic atmospheric circulation |
title_short |
Multi-regime states of arctic atmospheric circulation |
title_full |
Multi-regime states of arctic atmospheric circulation |
title_fullStr |
Multi-regime states of arctic atmospheric circulation |
title_full_unstemmed |
Multi-regime states of arctic atmospheric circulation |
title_sort |
multi-regime states of arctic atmospheric circulation |
publisher |
Iowa State University Digital Repository |
publishDate |
2011 |
url |
https://lib.dr.iastate.edu/etd/12061 https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=3065&context=etd |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Graduate Theses and Dissertations |
op_relation |
https://lib.dr.iastate.edu/etd/12061 https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=3065&context=etd |
_version_ |
1766313849058754560 |