Eurasian Cooling Linked to the Vertical Distribution of Arctic Warming
Observations show that deep Arctic winter warming, extending from surface to mid‐troposphere, has concurred with below‐average temperature over central Eurasia. Modeling studies focusing on the response to Arctic sea ice loss have shown Arctic surface warming but no consistent atmospheric changes at...
Published in: | Geophysical Research Letters |
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Online Access: | https://hdl.handle.net/11250/2738804 https://doi.org/10.1029/2020GL087212 |
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ftunivbergen:oai:bora.uib.no:11250/2738804 2023-05-15T14:32:40+02:00 Eurasian Cooling Linked to the Vertical Distribution of Arctic Warming He, Shengping Xu, Xinping Furevik, Tore Gao, Yongqi 2020 application/pdf https://hdl.handle.net/11250/2738804 https://doi.org/10.1029/2020GL087212 eng eng AGU urn:issn:0094-8276 https://hdl.handle.net/11250/2738804 https://doi.org/10.1029/2020GL087212 cristin:1808950 Geophysical Research Letters. 2020, 47 (10), e2020GL087212 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2020 The Authors e2020GL087212 Geophysical Research Letters 47 10 Journal article Peer reviewed 2020 ftunivbergen https://doi.org/10.1029/2020GL087212 2023-03-14T17:44:41Z Observations show that deep Arctic winter warming, extending from surface to mid‐troposphere, has concurred with below‐average temperature over central Eurasia. Modeling studies focusing on the response to Arctic sea ice loss have shown Arctic surface warming but no consistent atmospheric changes at midlatitude. Using a large number of simulations from coupled and uncoupled climate models, we show that Eurasian below‐average temperatures are more frequent in winters with deep warming compared to shallow, near‐surface warming over the Barents‐Kara Seas. Dramatic weakening of the midlatitude jet stream and increase in Ural blocking frequency are more likely to occur in winters with deep Arctic warming. Deep warming is independent of sea ice forcing but follows increased poleward atmospheric energy and moisture advection from the North Atlantic to the Arctic, indicating that internal natural variability and not sea ice is the main driving forcing for deep Arctic warming‐cold Eurasia pattern in historical simulations. publishedVersion Article in Journal/Newspaper Arctic North Atlantic Sea ice University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Geophysical Research Letters 47 10 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
Observations show that deep Arctic winter warming, extending from surface to mid‐troposphere, has concurred with below‐average temperature over central Eurasia. Modeling studies focusing on the response to Arctic sea ice loss have shown Arctic surface warming but no consistent atmospheric changes at midlatitude. Using a large number of simulations from coupled and uncoupled climate models, we show that Eurasian below‐average temperatures are more frequent in winters with deep warming compared to shallow, near‐surface warming over the Barents‐Kara Seas. Dramatic weakening of the midlatitude jet stream and increase in Ural blocking frequency are more likely to occur in winters with deep Arctic warming. Deep warming is independent of sea ice forcing but follows increased poleward atmospheric energy and moisture advection from the North Atlantic to the Arctic, indicating that internal natural variability and not sea ice is the main driving forcing for deep Arctic warming‐cold Eurasia pattern in historical simulations. publishedVersion |
format |
Article in Journal/Newspaper |
author |
He, Shengping Xu, Xinping Furevik, Tore Gao, Yongqi |
spellingShingle |
He, Shengping Xu, Xinping Furevik, Tore Gao, Yongqi Eurasian Cooling Linked to the Vertical Distribution of Arctic Warming |
author_facet |
He, Shengping Xu, Xinping Furevik, Tore Gao, Yongqi |
author_sort |
He, Shengping |
title |
Eurasian Cooling Linked to the Vertical Distribution of Arctic Warming |
title_short |
Eurasian Cooling Linked to the Vertical Distribution of Arctic Warming |
title_full |
Eurasian Cooling Linked to the Vertical Distribution of Arctic Warming |
title_fullStr |
Eurasian Cooling Linked to the Vertical Distribution of Arctic Warming |
title_full_unstemmed |
Eurasian Cooling Linked to the Vertical Distribution of Arctic Warming |
title_sort |
eurasian cooling linked to the vertical distribution of arctic warming |
publisher |
AGU |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2738804 https://doi.org/10.1029/2020GL087212 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic North Atlantic Sea ice |
genre_facet |
Arctic North Atlantic Sea ice |
op_source |
e2020GL087212 Geophysical Research Letters 47 10 |
op_relation |
urn:issn:0094-8276 https://hdl.handle.net/11250/2738804 https://doi.org/10.1029/2020GL087212 cristin:1808950 Geophysical Research Letters. 2020, 47 (10), e2020GL087212 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2020 The Authors |
op_doi |
https://doi.org/10.1029/2020GL087212 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
10 |
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1766306042116833280 |