DOI: 10.1007/s00382-011-1114-1
Scopus记录号: 2-s2.0-84859004765
论文题名: Effects of El Niño Modoki on winter precipitation in Korea
作者: Kim D.-W. ; Choi K.-S. ; Byun H.-R.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 38, 期: 2017-07-08 起始页码: 1313
结束页码: 1324
语种: 英语
英文关键词: Anomalous local meridional circulation
; Atmospheric wave train
; El Niño
; El Niño Modoki
; Winter precipitation
; Winter teleconnections
英文摘要: This study compares the impacts of El Niño Modoki and El Niño on precipitation over Korea during the boreal winters from 1954 to 2009. Precipitation in Korea tends to be equal to or greater than the normal level during an El Niño Modoki winter, whereas there is no significant change during an El Niño winter. Greater than normal precipitation during El Niño Modoki was also found over the lower reaches of the Yangtze River, China and much of southern Japan. The latitudes of these regions are 5-10° further north than in southern China, where precipitation increases during El Niño. The following two anomalous atmospheric circulations were found to be causes that led to different precipitation distributions over East Asia. First, an atmospheric wave train in the lower troposphere, which propagated from the central tropical Pacific (cyclonic) through the southern Philippine Sea (anticyclonic) to East Asia (cyclonic), reached the southern China and northern Philippine Sea during El Niño, whereas it reached Korea and southern Japan during El Niño Modoki. Second, an anomalous local meridional circulation, which consists of air sinking in the tropics, flowing poleward in the lower troposphere, and rising in the subtropics, developed between the southern Philippine Sea and northern Philippine Sea during El Niño. During El Niño Modoki, however, this circulation expanded further to the north and was formed between the southern Philippine Sea and regions of Korea and southern Japan. © 2011 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55327
Appears in Collections: 过去全球变化的重建
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作者单位: National Institute of Meteorological Research, Korea Meteorological Administration, Seoul, South Korea; National Typhoon Center, Korea Meteorological Administration, Jeju, South Korea; Department of Environmental Atmospheric Sciences, Pukyong National University, 599-1 Daeyeon 3-dong, Nam-gu, Busan 608-737, South Korea
Recommended Citation:
Kim D.-W.,Choi K.-S.,Byun H.-R.. Effects of El Niño Modoki on winter precipitation in Korea[J]. Climate Dynamics,2012-01-01,38(2017-07-08)