DOI: 10.1175/JCLI-D-11-00697.1
Scopus记录号: 2-s2.0-84872930883
论文题名: Coherent interdecadal variability of tropical cyclone rainfall and seasonal rainfall in taiwan during october
作者: Chen J.-M. ; Chen H.-S. ; Liu J.-S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 1 起始页码: 308
结束页码: 321
语种: 英语
Scopus关键词: Anticyclonic circulation
; Enhanced tc
; Favorable conditions
; Inter-decadal variability
; Interdecadal
; Moisture transport
; Northern South China Sea
; Open ocean
; Philippines
; Rainfall components
; Relative vorticity
; Seasonal rainfall
; SST anomalies
; Total rainfall
; Tropical cyclone
; Tropical Western Pacific
; Warm sea
; Western boundary
; Western North Pacific
; Western Pacific
; Atmospheric temperature
; Hurricanes
; Moisture
; Rain
; decadal variation
; moisture transfer
; rainfall
; sea surface temperature
; seasonal variation
; tropical cyclone
; Pacific Ocean
; Pacific Ocean (North)
; Philippine Sea
; South China Sea
; Taiwan
英文摘要: By separating total rainfall into tropical cyclone (TC) rainfall caused by TC passage and seasonal rainfall associated with moisture transport of prevailing seasonal flows, this study examines the interdecadal variability of these two rainfall components in Taiwan during fall. It is found that interdecadal variability of TC rainfall and seasonal rainfall tends to vary coherently in October. This coherent interdecadal rainfall mode features islandwide patterns in Taiwan and evident interdecadal oscillations. The associated large-scale regulating processes for the positive phase are characterized by warm sea surface temperature (SST) anomalies in the northern South China Sea and the western North Pacific, which in turn induce an anomalous anticyclonic circulation over the subtropical western Pacific to the east of Taiwan. On the western boundary of this anomalous anticyclone, anomalous southeasterly flows enhance mean moisture transport from the tropical western Pacific into Taiwan. Seasonal rainfall increases in Taiwan with stronger anomalies on the windward side over eastern Taiwan. Warm SST anomalies and accompanying large-scale convergence, ascendance, and positive relative vorticity anomalies provide favorable conditions for more TC formation in the Philippine Sea. More TCs tend to move along the western boundary of the anomalous anticyclone to cross the northern Philippines toward eastern Taiwan or toward the open oceans southwest of Taiwan. Taiwan is influenced by enhanced TC activity to have more TC rainfall with the largest anomalies being in the eastern parts. © 2013 American Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52058
Appears in Collections: 气候变化事实与影响
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作者单位: Institute of Maritime Information and Technology, National Kaohsiung Marine University, Kaohsiung, Taiwan
Recommended Citation:
Chen J.-M.,Chen H.-S.,Liu J.-S.. Coherent interdecadal variability of tropical cyclone rainfall and seasonal rainfall in taiwan during october[J]. Journal of Climate,2013-01-01,26(1)