Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL085679 |
Links Between Barents-Kara Sea Ice and the Extratropical Atmospheric Circulation Explained by Internal Variability and Tropical Forcing | |
Warner, J. L.1; Screen, J. A.1; Scaife, A. A.1,2 | |
2020-01-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | Changes in Arctic sea ice have been proposed to affect midlatitude winter atmospheric circulation, often based on observed coincident variability. However, causality of this covariability remains unclear. Here, we address this issue using atmospheric model experiments prescribed with observed sea surface temperature variations and either constant or time-varying sea ice variability. We show that the observed relationship between late-autumn Barents-Kara sea ice and the winter North Atlantic Oscillation can be reproduced by simulated atmospheric internal variability but is not simulated as a forced response to sea ice. Observations and models suggest reduced sea ice is linked to a weaker Aleutian Low. We show that simulated Aleutian Low variability is correlated with observed sea ice variability even in simulations with fixed sea ice, implying that this relationship is not incidental. Instead, we suggest that covariability between sea ice and the Aleutian Low originates from tropical sea surface temperature and rainfall variations and their teleconnections to the extratropics. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000513983400019 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; COLD WINTERS ; CLIMATE ; IMPACT ; ANOMALIES |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/279515 |
专题 | 气候变化 |
作者单位 | 1.Univ Exeter, Coll Engn Math & Phys Sci, Exeter, Devon, England; 2.Met Off Hadley Ctr, Exeter, Devon, England |
推荐引用方式 GB/T 7714 | Warner, J. L.,Screen, J. A.,Scaife, A. A.. Links Between Barents-Kara Sea Ice and the Extratropical Atmospheric Circulation Explained by Internal Variability and Tropical Forcing[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(1). |
APA | Warner, J. L.,Screen, J. A.,&Scaife, A. A..(2020).Links Between Barents-Kara Sea Ice and the Extratropical Atmospheric Circulation Explained by Internal Variability and Tropical Forcing.GEOPHYSICAL RESEARCH LETTERS,47(1). |
MLA | Warner, J. L.,et al."Links Between Barents-Kara Sea Ice and the Extratropical Atmospheric Circulation Explained by Internal Variability and Tropical Forcing".GEOPHYSICAL RESEARCH LETTERS 47.1(2020). |
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