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DOI | 10.1088/1748-9326/aaa0b7 |
Warm Arctic-cold Siberia: comparing the recent and the early 20th-century Arctic warmings | |
Wegmann, Martin1,2,3; Orsolini, Yvan4; Zolina, Olga1,5 | |
2018-02-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Switzerland; Norway; Russia |
英文摘要 | The Warm Arctic-cold Siberia surface temperature pattern during recent boreal winter is suggested to be triggered by the ongoing decrease of Arctic autumn sea ice concentration and has been observed together with an increase in mid-latitude extreme events and a meridionalization of tropospheric circulation. However, the exact mechanism behind this dipole temperature pattern is still under debate, since model experiments with reduced sea ice show conflicting results. We use the early twentieth-century Arctic warming (ETCAW) as a case study to investigate the link between September sea ice in the Barents-Kara Sea (BKS) and the Siberian temperature evolution. Analyzing a variety of long-term climate reanalyses, we find that the overall winter temperature and heat flux trend occurs with the reduction of September BKS sea ice. Tropospheric conditions show a strengthened atmospheric blocking over the BKS, strengthening the advection of cold air from the Arctic to central Siberia on its eastern flank, together with a reduction of warm air advection by the westerlies. This setup is valid for both the ETCAW and the current Arctic warming period. |
英文关键词 | climate change climate feedbacks sea ice reduction Arctic warming climate impacts large-scale climate variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425019300002 |
WOS关键词 | EURASIAN SNOW COVER ; BARENTS SEA-ICE ; ATMOSPHERIC RESPONSE ; MULTIDECADAL VARIABILITY ; POLAR VORTEX ; WINTER ; CLIMATE ; TEMPERATURE ; IMPACT ; AMPLIFICATION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/15032 |
专题 | 气候变化 |
作者单位 | 1.Univ Grenoble, Inst Geosci Environm, Grenoble, France; 2.Univ Bern, Oeschger Ctr Climate Change Res, Bern, Switzerland; 3.Univ Bern, Inst Geog, Bern, Switzerland; 4.NILU Norwegian Inst Air Res, Kjeller, Norway; 5.RAS, Shirshov Inst Oceanol, Moscow, Russia |
推荐引用方式 GB/T 7714 | Wegmann, Martin,Orsolini, Yvan,Zolina, Olga. Warm Arctic-cold Siberia: comparing the recent and the early 20th-century Arctic warmings[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(2). |
APA | Wegmann, Martin,Orsolini, Yvan,&Zolina, Olga.(2018).Warm Arctic-cold Siberia: comparing the recent and the early 20th-century Arctic warmings.ENVIRONMENTAL RESEARCH LETTERS,13(2). |
MLA | Wegmann, Martin,et al."Warm Arctic-cold Siberia: comparing the recent and the early 20th-century Arctic warmings".ENVIRONMENTAL RESEARCH LETTERS 13.2(2018). |
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