Analysis of the variations in the strength and position of stratospheric sudden warming in the past...
Analysis of the variations in the strength and position of stratospheric sudden warming in the past three decades
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Full title
Analysis of the variations in the strength and position of stratospheric sudden warming in the past three decades
Author / Creator
Journal title
大气和海洋科学快报（英文版）, 2019, Vol.12 (3), p.147-154
Language
Chinese
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Scope and Contents
Contents
利用ERA-Interim再分析资料统计分析了1920-2016年期间北半球33次强平流层爆发性增温(SSW)事件和22次弱增温事件的强度和位置变化特征.发现SSW主要发生在二月,其纬向平均温度的最大经向梯度变化在1979-8319年和1998-2011年呈上升趋势,1984-1997年和2012-2016年呈下降趋势,但是整体呈现略微下降的线性趋势,并且强SSW事件的强度和持续时间的变化特征相似.一些SSW事件几乎同时在100 hPa到10 hPa上出现,一些SSW事件却首先出现在10 hPa上再向低层下传.另外,我们还发现这55个SSW事件的最大增温中心主要位于欧亚大陆30°E到120°E之间,这或许跟过去三十年中欧亚大陆的极涡转移有关.
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Full title
Analysis of the variations in the strength and position of stratospheric sudden warming in the past three decades
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Author / Creator
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Record Identifier
TN_cdi_wanfang_journals_dqhhykxkb201903001
Permalink
https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_dqhhykxkb201903001
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ISSN
1674-2834
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