globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-15-0814.1
Scopus记录号: 2-s2.0-85008657238
论文题名:
Relationship between the Asian westerly jet stream and summer rainfall over central Asia and North China: Roles of the Indian Monsoon and the South Asian high
作者: Wei W.; Zhang R.; Wen M.; Yang S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期:2
起始页码: 537
结束页码: 552
语种: 英语
Scopus关键词: Atmospheric thermodynamics ; Climate change ; Climatology ; Fighter aircraft ; Meteorology ; Asia ; Atmospheric circulation ; Diagnostic analysis ; Indian summer monsoon ; Interannual time scale ; Interannual variability ; Monsoons ; Westerly jet streams ; Rain ; annual variation ; atmospheric circulation ; jet stream ; monsoon ; rainfall ; summer ; teleconnection ; westerly ; Central Asia ; China
英文摘要: Diagnostic analyses are performed to investigate the relationship between the upper-level Asian westerly jet stream (AWJS) and the associated rainfall pattern over the AWJS region in boreal summer on interannual time scales. Results show an out-of-phase rainfall variation over central Asia (CA) and north China (NC), which is closely related to the southeast-northwest (SE-NW) shift of the AWJS. The physical mechanisms on the relationship between the AWJS and the rainfall pattern are revealed by exploring the effects of the Indian summer monsoon (ISM) and the South Asian high (SAH). It is found that the SE-NW shifts of the AWJS and SAH associated with the ISM lead to the anomalous circulations over the midlatitudes in the AWJS region and cause rainfall anomalies over CA and NC. A weak ISM results in a southeastward shift of SAH, which is responsible for a southeastward shift of the AWJS. The anomalous atmospheric circulation associated with the southeastward located SAH produces anomalous updrafts (downdrafts) over the western (eastern) AWJS region, resulting in increased rainfall over CA and decreased rainfall over NC. It is proposed that the upper-level system SAH plays a crucial role in the teleconnection among the summer rainfall over the midlatitude AWJS region and ISM region. © 2017 American Meteorological Society.
资助项目: China Postdoctoral Science Foundation ; NSFC, National Natural Science Foundation of China ; NSFC, National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49813
Appears in Collections:气候变化事实与影响

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作者单位: School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, China; State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China; Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, Guangzhou, China; Chinese Academy of Sciences Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, China

Recommended Citation:
Wei W.,Zhang R.,Wen M.,et al. Relationship between the Asian westerly jet stream and summer rainfall over central Asia and North China: Roles of the Indian Monsoon and the South Asian high[J]. Journal of Climate,2017-01-01,30(2)
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