Atmospheric circulation patterns which promote winter Arctic sea ice decline
The impact of winter atmospheric blocking over the Ural Mountains region (UB) coincident with different phases of the North Atlantic Oscillation (NAO) on the sea ice variability over the Barents and Kara Seas (BKS) in winter is investigated. It is found that the UB in conjunction with the positive p...
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Online Access: | https://doi.org/10.1088/1748-9326/aa69d0 https://doaj.org/article/abce9dfbb8fd4662bc3a99f661c86819 |
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ftdoajarticles:oai:doaj.org/article:abce9dfbb8fd4662bc3a99f661c86819 2023-09-05T13:16:49+02:00 Atmospheric circulation patterns which promote winter Arctic sea ice decline Binhe Luo Dehai Luo Lixin Wu Linhao Zhong Ian Simmonds 2017-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/aa69d0 https://doaj.org/article/abce9dfbb8fd4662bc3a99f661c86819 EN eng IOP Publishing https://doi.org/10.1088/1748-9326/aa69d0 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/aa69d0 1748-9326 https://doaj.org/article/abce9dfbb8fd4662bc3a99f661c86819 Environmental Research Letters, Vol 12, Iss 5, p 054017 (2017) Arctic sea ice decline Ural blocking North Atlantic Oscillation moisture intrusion Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2017 ftdoajarticles https://doi.org/10.1088/1748-9326/aa69d0 2023-08-13T00:37:37Z The impact of winter atmospheric blocking over the Ural Mountains region (UB) coincident with different phases of the North Atlantic Oscillation (NAO) on the sea ice variability over the Barents and Kara Seas (BKS) in winter is investigated. It is found that the UB in conjunction with the positive phase of the NAO (NAO ^+ ) leads to the strongest sea ice decline. During this phase composites and trajectory analyses reveal an efficient moisture pathway to the BKS from the mid-latitude North Atlantic near the Gulf Stream Extension region where water vapor is abundant due to high sea surface temperatures. The NAO ^+ -UB combination is an optimal circulation pattern that significantly increases the BKS water vapor that plays a major role in the BKS warming and sea ice reduction, while the increased sensible and latent heat fluxes play secondary roles. By contrast, much fewer dramatic impacts on the BKS are observed when the UB coincides with the neutral or negative phases of the NAO. Our results present new insights into the complex processes involved with Arctic sea ice reduction and warming. The mechanisms highlighted here potentially offer a perspective into the mechanisms behind Arctic multi-decadal climate variability. Article in Journal/Newspaper Arctic North Atlantic North Atlantic oscillation Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Environmental Research Letters 12 5 054017 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic sea ice decline Ural blocking North Atlantic Oscillation moisture intrusion Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
Arctic sea ice decline Ural blocking North Atlantic Oscillation moisture intrusion Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Binhe Luo Dehai Luo Lixin Wu Linhao Zhong Ian Simmonds Atmospheric circulation patterns which promote winter Arctic sea ice decline |
topic_facet |
Arctic sea ice decline Ural blocking North Atlantic Oscillation moisture intrusion Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
The impact of winter atmospheric blocking over the Ural Mountains region (UB) coincident with different phases of the North Atlantic Oscillation (NAO) on the sea ice variability over the Barents and Kara Seas (BKS) in winter is investigated. It is found that the UB in conjunction with the positive phase of the NAO (NAO ^+ ) leads to the strongest sea ice decline. During this phase composites and trajectory analyses reveal an efficient moisture pathway to the BKS from the mid-latitude North Atlantic near the Gulf Stream Extension region where water vapor is abundant due to high sea surface temperatures. The NAO ^+ -UB combination is an optimal circulation pattern that significantly increases the BKS water vapor that plays a major role in the BKS warming and sea ice reduction, while the increased sensible and latent heat fluxes play secondary roles. By contrast, much fewer dramatic impacts on the BKS are observed when the UB coincides with the neutral or negative phases of the NAO. Our results present new insights into the complex processes involved with Arctic sea ice reduction and warming. The mechanisms highlighted here potentially offer a perspective into the mechanisms behind Arctic multi-decadal climate variability. |
format |
Article in Journal/Newspaper |
author |
Binhe Luo Dehai Luo Lixin Wu Linhao Zhong Ian Simmonds |
author_facet |
Binhe Luo Dehai Luo Lixin Wu Linhao Zhong Ian Simmonds |
author_sort |
Binhe Luo |
title |
Atmospheric circulation patterns which promote winter Arctic sea ice decline |
title_short |
Atmospheric circulation patterns which promote winter Arctic sea ice decline |
title_full |
Atmospheric circulation patterns which promote winter Arctic sea ice decline |
title_fullStr |
Atmospheric circulation patterns which promote winter Arctic sea ice decline |
title_full_unstemmed |
Atmospheric circulation patterns which promote winter Arctic sea ice decline |
title_sort |
atmospheric circulation patterns which promote winter arctic sea ice decline |
publisher |
IOP Publishing |
publishDate |
2017 |
url |
https://doi.org/10.1088/1748-9326/aa69d0 https://doaj.org/article/abce9dfbb8fd4662bc3a99f661c86819 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
Arctic North Atlantic North Atlantic oscillation Sea ice |
op_source |
Environmental Research Letters, Vol 12, Iss 5, p 054017 (2017) |
op_relation |
https://doi.org/10.1088/1748-9326/aa69d0 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/aa69d0 1748-9326 https://doaj.org/article/abce9dfbb8fd4662bc3a99f661c86819 |
op_doi |
https://doi.org/10.1088/1748-9326/aa69d0 |
container_title |
Environmental Research Letters |
container_volume |
12 |
container_issue |
5 |
container_start_page |
054017 |
_version_ |
1776198261518893056 |