Strong modulations on the Bay of Bengal monsoon onset vortex by the first northward-propagating intra-seasonal oscillation

doi:10.1007/s00382-015-2826-4

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋与气候研究中心

	Strong modulations on the Bay of Bengal monsoon onset vortex by the first northward-propagating intra-seasonal oscillation
	Li, Kuiping 1,2,3; Li, Zhi 2; Yang, Yang 2; Xiang, Baoqiang 4,5; Liu, Yanliang 2; Yu, Weidong 2
刊名	CLIMATE DYNAMICS
	2016-07
卷号	47 期号:1-2 页码:107-115
关键词	Monsoon onset vortex Tropical cyclone Intra-seasonal oscillation Bay of Bengal Genesis potential index
ISSN号	0930-7575
DOI	10.1007/s00382-015-2826-4
英文摘要	Monsoon onset vortex (OV) in the form of tropical cyclone is often observed in the pre-monsoon period and contributes to the subsequent abrupt establishment of summer monsoon over the Bay of Bengal (BoB). It is identified here that all historical OVs occurred during the convection-enhanced phase of the first northward-propagating intra-seasonal oscillation (FNISO). The individual contributions from the four large scale environmental fields associated with the intra-seasonal variations to the cyclone genesis are diagnosed with the aid of the genesis potential index. The significant moistening of mid-level atmosphere, which is embedded in the FNISO convection-enhanced phase, is shown to be the primary factor leading to the cyclone genesis. The water vapor budget analysis is further done to understand the governing process for the mid-level humidity increase. It is clearly seen that the vertical advection process, dominated by the anomalous vertical advection of the mean vertical water vapor gradient, plays the critical role. Hence the OVs are shown to be strongly modulated by FNISOs, both of which are important elements of the complex story of the BoB monsoon onset.
资助项目	NSFC[41005032]
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000381227100008
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/3407]
专题	业务部门_海洋与气候研究中心
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China; 2.SOA, Inst Oceanog 1, Ctr Ocean & Climate Res, Qingdao 266061, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 10049, Peoples R China; 4.NOAA, Geophys Fluid Dynam Lab, Princeton, NJ USA; 5.Univ Corp Atmospheric Res, Boulder, CO USA
推荐引用方式 GB/T 7714	Li, Kuiping,Li, Zhi,Yang, Yang,et al. Strong modulations on the Bay of Bengal monsoon onset vortex by the first northward-propagating intra-seasonal oscillation[J]. CLIMATE DYNAMICS,2016,47(1-2):107-115.
APA	Li, Kuiping,Li, Zhi,Yang, Yang,Xiang, Baoqiang,Liu, Yanliang,&Yu, Weidong.(2016).Strong modulations on the Bay of Bengal monsoon onset vortex by the first northward-propagating intra-seasonal oscillation.CLIMATE DYNAMICS,47(1-2),107-115.
MLA	Li, Kuiping,et al."Strong modulations on the Bay of Bengal monsoon onset vortex by the first northward-propagating intra-seasonal oscillation".CLIMATE DYNAMICS 47.1-2(2016):107-115.