DOI: 10.1002/2014GL061633
论文题名: An emerging precursor signal in the stratosphere in recent decades for the Indian summer monsoon onset
作者: Ren R. ; Hu J.
刊名: Geophysical Research Letters
ISSN: 0094-9710
EISSN: 1944-9441
出版年: 2014
卷: 41, 期: 20 起始页码: 7391
结束页码: 7396
语种: 英语
英文关键词: Indian summer monsoon
; stratospheric final warming
英文摘要: This paper reports a significant temporal relationship that has emerged in recent decades between the Indian summer monsoon (ISM) onset and the seasonal timing of the stratospheric final warming (SFW). Specifically, early SFWs in spring tend to be followed by late ISM onset and vice versa. During the ISM onset season after 1979, there exist significant SFW-related zonal wind anomalies over South Asia, and they are highly consistent with that of the ISM-related in both the upper and lower troposphere. These SFW-related zonal wind anomalies are not observed before 1979, corresponding to the absence of the SFW-ISM relationship. Further analysis indicates that the tropospheric Arctic Oscillation anomalies that follow the stratospheric SFWs to appear during April to early May after 1979 are crucial for the emerging SFW-ISM linkage. This implies that the seasonal timing of SFWs may act as an emerging precursor for the ISM onset since 1970s. Key Points Significant relationship between ISM onset and SFW timing emerges since 1970sThe strengthened SFW-related AO anomalies in April and May after 1970s are crucialSFW timing becomes a precursor signal for ISM onset in recent decades ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84937195766&doi=10.1002%2f2014GL061633&partnerID=40&md5=236add0e3cac0d5af8c936e777ccaef6
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6974
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Ren R.,Hu J.. An emerging precursor signal in the stratosphere in recent decades for the Indian summer monsoon onset[J]. Geophysical Research Letters,2014-01-01,41(20).