globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2014JD021876
论文题名:
Northern Hemisphere mid-winter vortex-displacement and vortex-split stratospheric sudden warmings: Influence of the Madden-Julian Oscillation and Quasi-Biennial Oscillation
作者: Liu C.; Tian B.; Li K.-F.; Manney G.L.; Livesey N.J.; Yung Y.L.; Waliser D.E.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 2169897X
出版年: 2014
卷: 119, 期:22
起始页码: 12599
结束页码: 12620
语种: 英语
英文关键词: Madden-Julian oscillation ; planetary wave ; polar vortex ; quasi-biennial oscillation ; stratospheric sudden warming ; teleconnection
Scopus关键词: air-sea interaction ; climate change ; jet flow ; Madden-Julian oscillation ; Northern Hemisphere ; quasi-biennial oscillation ; stratosphere ; vortex flow ; wave propagation ; Arctic Ocean
英文摘要: We investigate the connection between the equatorial Madden-Julian Oscillation (MJO) and different types of the Northern Hemisphere mid-winter major stratospheric sudden warmings (SSWs), i.e., vortex-displacement and vortex-split SSWs. The MJO-SSW relationship for vortex-split SSWs is stronger than that for vortex-displacement SSWs, as a result of the stronger and more coherent eastward propagating MJOs before vortex-split SSWs than those before vortex-displacement SSWs. Composite analysis indicates that both the intensity and propagation features of MJO may influence the MJO-related circulation pattern at high latitudes and the type of SSWs. A pronounced Quasi-Biennial Oscillation (QBO) dependence is found for vortex-displacement and vortex-split SSWs, with vortex-displacement (-split) SSWs occurring preferentially in easterly (westerly) QBO phases. The lagged composites suggest that the MJO-related anomalies in the Arctic are very likely initiated when the MJO-related convection is active over the equatorial Indian Ocean (around the MJO phase 3). Further analysis suggests that the QBO may modulate the MJO-related wave disturbances via its influence on the upper tropospheric subtropical jet. As a result, the MJO-related circulation pattern in the Arctic tends to be wave number-one/wave number-two ~25-30 days following phase 3 (i.e., approximately phases 7-8, when the MJO-related convection is active over the western Pacific) during easterly/westerly QBO phases, which resembles the circulation pattern associated with vortex-displacement/vortex-split SSWs. ©2014. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63026
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Joint Institute for Regional Earth System Science and Engineering, University of California, Los Angeles, CA, United States; Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Jack Eddy Fellow, University Corporation for Atmospheric Research, Boulder, CO, United States; Department of Applied Mathematics, University of Washington, Seattle, WA, United States; NorthWest Research Associates, Socorro, NM, United States; New Mexico Institute of Mining and Technology, Socorro, NM, United States; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States

Recommended Citation:
Liu C.,Tian B.,Li K.-F.,et al. Northern Hemisphere mid-winter vortex-displacement and vortex-split stratospheric sudden warmings: Influence of the Madden-Julian Oscillation and Quasi-Biennial Oscillation[J]. Journal of Geophysical Research Atmospheres,2014-01-01,119(22)
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