DOI: 10.1175/JCLI-D-11-00068.1
Scopus记录号: 2-s2.0-84863011756
论文题名: Interannual variation of the late fall rainfall in central Vietnam
作者: Chen T.-C. ; Tsay J.-D. ; Yen M.-C. ; Matsumoto J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 1 起始页码: 392
结束页码: 413
语种: 英语
Scopus关键词: Asia
; Climate variability
; Hydrologic cycles
; Monsoons
; Water budget
; Climate change
; Nickel compounds
; Shear flow
; Storms
; Tropics
; Rain
; annual variation
; climate change
; climate variation
; hydrological cycle
; monsoon
; precipitation intensity
; rainfall
; sea surface temperature
; shear flow
; temperature anomaly
; tropical cyclone
; water budget
; water vapor
; westerly
; zonal wind
; Pacific Ocean
; Pacific Ocean (Tropical)
; Viet Nam
英文摘要: The heavy rainfall/flood (HRF) event in central Vietnam usually occurs in October-November, the maximum rainfall season. This rainfall maximum undergoes a distinct interannual variation, opposite the interannual variation of sea surface temperature (SST) anomalies averaged over the NOAA Niño-3.4 area-ΔSST(Niño-3.4)-but coincident with the intensification (weakening) of the low-level easterlies at 158N and westerlies at 5°N. The changes of low-level zonal winds reflect the strengthening (weakening) of the tropical cyclonic shear flow in tropical South/Southeast Asia in response to the tropical Pacific SST anomalies. Because the rainfall maximum in central Vietnam is primarily produced by the HRF cyclone, the interannual rainfall variation in this region should be attributed to the HRF cyclone activity-a new perspective of the climate change in precipitation. On average, one HRF cyclone occurs in each cold late fall. The population of the HRFcyclone may not be an important factor causing the interannual rainfall variation in central Vietnam. During the cold late fall, the rain-producing efficiency of the individual HRF cyclone is statistically almost twice those during warm and normal late falls and the most crucial factor leading to the interannual rainfall variation in central Vietnam. It is shown by further hydrological analysis that the increase (decrease) of the HRF cyclone's rain-producing efficiency is determined by the large-scale environmental flow through the enhancement (weakening) of the regional convergence of water vapor flux. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52615
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Geological and Atmospheric Sciences, Iowa State University, Ames, IA, United States; Department of Atmospheric Sciences, National Central University, Chung-Li, Taiwan; Department of Geography, Tokyo Metropolitan University, Tokyo, and Research Institute for Global Change, Jamstec, Yokosuka, Japan
Recommended Citation:
Chen T.-C.,Tsay J.-D.,Yen M.-C.,et al. Interannual variation of the late fall rainfall in central Vietnam[J]. Journal of Climate,2012-01-01,25(1)