DOI: 10.1007/s00382-017-3681-2
Scopus记录号: 2-s2.0-85017434249
论文题名: Influence of Kuroshio SST front in the East China Sea on the climatological evolution of Meiyu rainband
作者: Xu M. ; Xu H. ; Ren H.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期: 2018-03-04 起始页码: 1243
结束页码: 1266
语种: 英语
英文关键词: Atmosphere–ocean interaction
; East China Sea
; Kuroshio
; Meiyu rainband
; Seasonal evolution
; SST front
Scopus关键词: air-sea interaction
; climatology
; precipitation (climatology)
; rainband
; sea surface temperature
; seasonal variation
; East China Sea
; Pacific Ocean
英文摘要: The influence of Kuroshio sea surface temperature (SST) front in the East China Sea (ECS) on the temporal evolution of climatological Meiyu rainband was investigated using a suite of high-resolution satellite observations and a reanalysis dataset from 2000 to 2011. During the northward seasonal march of Meiyu rainband from the warmer flank of the SST front to the colder flank, the climatological rainband strength weakened substantially despite large-scale environment became more conducive to intensify precipitation. A sharp reduction in occurrence frequency of precipitation with relatively shallower depth and smaller intensity was responsible for the weakening of Meiyu rainband. During the northward migration of Meiyu rainband, individual precipitation events became deeper and more intensive, and the contribution of convective precipitation to the rainband was enhanced, associated with the seasonal northward extension of high convective instability region over the ECS. The characteristics of Meiyu rainband evolution were generally supported by cloud observations. When Meiyu rainband was located on the warmer flank of the SST front, local enhanced mean surface wind convergence and variance of convergence at synoptic timescale by the warm SST of the Kuroshio favored strong surface convergence that may trigger precipitation. A detailed moisture budget analysis revealed that the major part of moisture for Meiyu precipitation was supplied by low-level wind convergence, with much smaller contribution from moisture advection. The variation of climatological precipitation associated with Meiyu northward migration depended on SST modulation of both surface evaporation and low-level moisture convergence over the ECS. © 2017, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109475
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: College of Atmospheric Sciences, Key Laboratory of Meteorological Disaster, and Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, 219 Ning Liu Rd., Nanjing, 210044, China
Recommended Citation:
Xu M.,Xu H.,Ren H.. Influence of Kuroshio SST front in the East China Sea on the climatological evolution of Meiyu rainband[J]. Climate Dynamics,2018-01-01,50(2018-03-04)