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DOI | 10.1175/JCLI-D-17-0520.1 |
The Importance of a Properly Represented Stratosphere for Northern Hemisphere Surface Variability in the Atmosphere and the Ocean | |
Haase, Sabine1; Matthes, Katja1,2; Latif, Mojib1,2; Omrani, Nour-Eddine3,4 | |
2018-10-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:20页码:8481-8497 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Norway |
英文摘要 | Major sudden stratospheric warmings (SSWs) are extreme events during boreal winter, which not only impact tropospheric weather up to three months but also can influence oceanic variability through wind stress and heat flux anomalies. In the North Atlantic region, SSWs have the potential to modulate deep convection in the Labrador Sea and thereby the strength of the Atlantic meridional overturning circulation. The impact of SSWs on the Northern Hemisphere surface climate is investigated in two coupled climate models: a stratosphere-resolving (high top) and a non-stratosphere-resolving (low top) model. In both configurations, a robust link between SSWs and a negative NAO is detected, which leads to shallower-than-normal North Atlantic mixed layer depth. The frequency of SSWs and the persistence of this link is better captured in the high-top model. Significant differences occur over the Pacific region, where an unrealistically persistent Aleutian low is observed in the low-top configuration. An overrepresentation of SSWs during El Nino conditions in the low-top model is the main cause for this artifact. Our results underline the importance of a proper representation of the stratosphere in a coupled climate model for a consistent surface response in both the atmosphere and the ocean, which, among others, may have implications for oceanic deep convection in the subpolar North Atlantic. |
英文关键词 | Atmosphere-ocean interaction Oceanic mixed layer Stratosphere-troposphere coupling North Atlantic Oscillation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000444535800001 |
WOS关键词 | SUDDEN WARMINGS ; EL-NINO ; TROPOSPHERIC CIRCULATION ; ATLANTIC OSCILLATION ; CLIMATE VARIABILITY ; ARCTIC OSCILLATION ; ANNULAR MODES ; POLAR VORTEX ; CMIP5 MODELS ; PART I |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/21074 |
专题 | 气候变化 |
作者单位 | 1.GEOMAR Helmholtz Ctr Ocean Res Kiel, Kiel, Germany; 2.Christian Albrechts Univ Kiel, Kiel, Germany; 3.Univ Bergen, Geophys Inst, Bergen, Norway; 4.Bjerknes Ctr Climate Res, Bergen, Norway |
推荐引用方式 GB/T 7714 | Haase, Sabine,Matthes, Katja,Latif, Mojib,et al. The Importance of a Properly Represented Stratosphere for Northern Hemisphere Surface Variability in the Atmosphere and the Ocean[J]. JOURNAL OF CLIMATE,2018,31(20):8481-8497. |
APA | Haase, Sabine,Matthes, Katja,Latif, Mojib,&Omrani, Nour-Eddine.(2018).The Importance of a Properly Represented Stratosphere for Northern Hemisphere Surface Variability in the Atmosphere and the Ocean.JOURNAL OF CLIMATE,31(20),8481-8497. |
MLA | Haase, Sabine,et al."The Importance of a Properly Represented Stratosphere for Northern Hemisphere Surface Variability in the Atmosphere and the Ocean".JOURNAL OF CLIMATE 31.20(2018):8481-8497. |
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