Improvement in simulation of Eurasian winter climate variability with a realistic Arctic sea ice condition in an atmospheric GCM
The present study investigates how much a realistic Arctic sea ice condition can contribute to improve simulation of the winter climate variation over the Eurasia region. Model experiments are set up using different sea ice boundary conditions over the past 24 years (i.e., 1988–2011). One is an atmo...
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Online Access: | https://doi.org/10.1088/1748-9326/7/4/044041 https://doaj.org/article/c941c3a0b9a54315a75385b3173e7316 |
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ftdoajarticles:oai:doaj.org/article:c941c3a0b9a54315a75385b3173e7316 2023-09-05T13:17:00+02:00 Improvement in simulation of Eurasian winter climate variability with a realistic Arctic sea ice condition in an atmospheric GCM Young-Kwon Lim Yoo-Geun Ham Jee-Hoon Jeong Jong-Seong Kug 2012-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/7/4/044041 https://doaj.org/article/c941c3a0b9a54315a75385b3173e7316 EN eng IOP Publishing https://doi.org/10.1088/1748-9326/7/4/044041 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/7/4/044041 1748-9326 https://doaj.org/article/c941c3a0b9a54315a75385b3173e7316 Environmental Research Letters, Vol 7, Iss 4, p 044041 (2012) sea-ice mid-latitude winter climate atmospheric GCM Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2012 ftdoajarticles https://doi.org/10.1088/1748-9326/7/4/044041 2023-08-13T00:37:42Z The present study investigates how much a realistic Arctic sea ice condition can contribute to improve simulation of the winter climate variation over the Eurasia region. Model experiments are set up using different sea ice boundary conditions over the past 24 years (i.e., 1988–2011). One is an atmospheric model inter-comparison (AMIP) type of run forced with observed sea-surface temperature (SST), sea ice, and greenhouse gases (referred to as Exp RSI), and the other is the same as Exp RSI except for the sea ice forcing, which is a repeating climatological annual cycle (referred to as Exp CSI). Results show that Exp RSI produces the observed dominant pattern of Eurasian winter temperatures and their interannual variation better than Exp CSI (correlation difference up to ∼0.3). Exp RSI captures the observed strong relationship between the sea ice concentration near the Barents and Kara seas and the temperature anomaly across Eurasia, including northeastern Asia, which is not well captured in Exp CSI. Lagged atmospheric responses to sea ice retreat are examined using observations to understand atmospheric processes for the Eurasian cooling response including the Arctic temperature increase, sea-level pressure increase, upper-level jet weakening and cold air outbreak toward the mid-latitude. The reproducibility of these lagged responses by Exp RSI is also evaluated. Article in Journal/Newspaper Arctic Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Environmental Research Letters 7 4 044041 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sea-ice mid-latitude winter climate atmospheric GCM Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
sea-ice mid-latitude winter climate atmospheric GCM Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Young-Kwon Lim Yoo-Geun Ham Jee-Hoon Jeong Jong-Seong Kug Improvement in simulation of Eurasian winter climate variability with a realistic Arctic sea ice condition in an atmospheric GCM |
topic_facet |
sea-ice mid-latitude winter climate atmospheric GCM Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
The present study investigates how much a realistic Arctic sea ice condition can contribute to improve simulation of the winter climate variation over the Eurasia region. Model experiments are set up using different sea ice boundary conditions over the past 24 years (i.e., 1988–2011). One is an atmospheric model inter-comparison (AMIP) type of run forced with observed sea-surface temperature (SST), sea ice, and greenhouse gases (referred to as Exp RSI), and the other is the same as Exp RSI except for the sea ice forcing, which is a repeating climatological annual cycle (referred to as Exp CSI). Results show that Exp RSI produces the observed dominant pattern of Eurasian winter temperatures and their interannual variation better than Exp CSI (correlation difference up to ∼0.3). Exp RSI captures the observed strong relationship between the sea ice concentration near the Barents and Kara seas and the temperature anomaly across Eurasia, including northeastern Asia, which is not well captured in Exp CSI. Lagged atmospheric responses to sea ice retreat are examined using observations to understand atmospheric processes for the Eurasian cooling response including the Arctic temperature increase, sea-level pressure increase, upper-level jet weakening and cold air outbreak toward the mid-latitude. The reproducibility of these lagged responses by Exp RSI is also evaluated. |
format |
Article in Journal/Newspaper |
author |
Young-Kwon Lim Yoo-Geun Ham Jee-Hoon Jeong Jong-Seong Kug |
author_facet |
Young-Kwon Lim Yoo-Geun Ham Jee-Hoon Jeong Jong-Seong Kug |
author_sort |
Young-Kwon Lim |
title |
Improvement in simulation of Eurasian winter climate variability with a realistic Arctic sea ice condition in an atmospheric GCM |
title_short |
Improvement in simulation of Eurasian winter climate variability with a realistic Arctic sea ice condition in an atmospheric GCM |
title_full |
Improvement in simulation of Eurasian winter climate variability with a realistic Arctic sea ice condition in an atmospheric GCM |
title_fullStr |
Improvement in simulation of Eurasian winter climate variability with a realistic Arctic sea ice condition in an atmospheric GCM |
title_full_unstemmed |
Improvement in simulation of Eurasian winter climate variability with a realistic Arctic sea ice condition in an atmospheric GCM |
title_sort |
improvement in simulation of eurasian winter climate variability with a realistic arctic sea ice condition in an atmospheric gcm |
publisher |
IOP Publishing |
publishDate |
2012 |
url |
https://doi.org/10.1088/1748-9326/7/4/044041 https://doaj.org/article/c941c3a0b9a54315a75385b3173e7316 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Environmental Research Letters, Vol 7, Iss 4, p 044041 (2012) |
op_relation |
https://doi.org/10.1088/1748-9326/7/4/044041 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/7/4/044041 1748-9326 https://doaj.org/article/c941c3a0b9a54315a75385b3173e7316 |
op_doi |
https://doi.org/10.1088/1748-9326/7/4/044041 |
container_title |
Environmental Research Letters |
container_volume |
7 |
container_issue |
4 |
container_start_page |
044041 |
_version_ |
1776198368923484160 |