DOI: 10.1175/JCLI-D-14-00649.1
Scopus记录号: 2-s2.0-84945910201
论文题名: Zonal extension and retraction of the subtropical westerly jet stream and evolution of precipitation over East Asia and the Western Pacific
作者: Xie Z. ; Du Y. ; Yang S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 17 起始页码: 6783
结束页码: 6798
语种: 英语
Scopus关键词: Climate change
; Climatology
; Meteorology
; Nickel
; Rain
; Atmospheric circulation
; Climate variability
; Interannual variability
; Rainbands
; Seasonal variability
; Fighter aircraft
; annual variation
; atmospheric circulation
; climate variation
; jet stream
; precipitation (climatology)
; rainband
; seasonal variation
; Far East
; Pacific Ocean
; Pacific Ocean (West)
; Citrus maxima
英文摘要: The relationship between the zonal extension and retraction of the East Asian subtropical westerly jet stream (EASWJ) and the seasonal evolution of precipitation is investigated. The EASWJ exhibits significant zonal variations associated with its seasonal evolution, which affects both large-scale atmospheric circulation and precipitation over East Asia and the North Pacific. The midlatitude rain belts and the intertropical convergence zone are located more eastward and southward during jet extensions compared to jet retractions. The seasonal cycle of the zonal variations of EASWJ can be divided into four periods: December-February, March-May, June-July, and September-November. Particularly in the mei-yu period of June-July, jet retraction events are associated with a northward shift of rain belts over eastern China, which may play an important role in the northward movement of the mei-yu rain belt to the Huaihe River valley of eastern China after 1999. The zonal extension and retraction of the jet stream are more likely to occur in the ENSO decaying phase. A composite analysis of diabatic heating and outgoing longwave radiation shows a tripolar anomaly pattern that is strongest in El Niño winter and is important for the zonal extension of the jet stream over the Pacific. This spatial structure is conducive to a strengthening local Hadley cell over the Pacific and can also appear in weak El Niño periods. On the other hand, there is no tripolar anomaly pattern for zonally retracted jet streams. © 2015 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50410
Appears in Collections: 气候变化事实与影响
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作者单位: Jiangsu Climate Center, Nanjing, China; Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing, China; Department of Atmospheric Sciences, Institute of Earth Climate and Environment System, Sun Yat-sen University, Guangzhou, China
Recommended Citation:
Xie Z.,Du Y.,Yang S.. Zonal extension and retraction of the subtropical westerly jet stream and evolution of precipitation over East Asia and the Western Pacific[J]. Journal of Climate,2015-01-01,28(17)