Arid
Interaction of a mesoscale low and diffused tropical depression during south Asian summer monsoon
Rasul, Ghulam1; Chaudhry, Qamar-Uz-Zaman1; Zeng, Qingcun2; Zhao, Sixiong2; Shouting, Gao2
通讯作者Rasul, Ghulam
来源期刊MAUSAM
ISSN0252-9416
出版年2008
卷号59期号:4页码:453-460
英文摘要

This paper presents the results of a diagnostic study of a typical case in south Asian summer monsoon when a meso-scale low in a desert climate interacted with a diffused tropical depression originated over the Bay of Bengal. Surface and NCEP reanalysis data supported by satellite and radar images were incorporated in diagnosis. The relationship between heavy precipitation process and large-scale circulations such as westerly jet, low level jet, convergence, vorticity and water vapor transport were investigated to further understand the mechanism of this peculiar interaction. It has been found that the meso-scale low developed as a result of cold air advection aloft from northern latitudes and strong convection over the region of humidity convergence, i.e., Rajasthan (India) on 24(th) July 2003. On the same day, a low formed on the Bay of Bengal which further developed into monsoon depression. It moved westward from the Bay towards the meso-scale low over southwest India. Meso-scale low remained more or less stationery for two days gaining intensity and then moved relatively with slower speed in southwestward direction. Both the systems yielded moderate to heavy rain in areas under their influence. Interaction resulted into huge accentuation with an abrupt increase in intensity.


英文关键词Monsoon depression Convective instability Cold air advection Low level jet Westerly jet Summer monsoon Mesoscale Convective System (MCS)
类型Article
语种英语
国家Pakistan ; Peoples R China
收录类别SCI-E
WOS记录号WOS:000261444700003
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
来源机构中国科学院大气物理研究所
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/158548
作者单位1.Meteorol Serv Pakistan, Islamabad, Pakistan;
2.Chinese Acad Sci, Inst Atmospher Phys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714
Rasul, Ghulam,Chaudhry, Qamar-Uz-Zaman,Zeng, Qingcun,et al. Interaction of a mesoscale low and diffused tropical depression during south Asian summer monsoon[J]. 中国科学院大气物理研究所,2008,59(4):453-460.
APA Rasul, Ghulam,Chaudhry, Qamar-Uz-Zaman,Zeng, Qingcun,Zhao, Sixiong,&Shouting, Gao.(2008).Interaction of a mesoscale low and diffused tropical depression during south Asian summer monsoon.MAUSAM,59(4),453-460.
MLA Rasul, Ghulam,et al."Interaction of a mesoscale low and diffused tropical depression during south Asian summer monsoon".MAUSAM 59.4(2008):453-460.
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