Impact of low level jet on heavy rainfall events over Mumbai

被引:0
|
作者
Kumar, Vinod [1 ]
Bhagat, D. K. U. R. [1 ]
Kumar, M. Satya [2 ]
Ganesh, Shiv [3 ]
机构
[1] Meteorol Off, Bombay, Maharashtra, India
[2] Meteorol Ctr, Hyderabad, Andhra Pradesh, India
[3] Meteorol Ctr, Jaipur, Rajasthan, India
来源
MAUSAM | 2007年 / 58卷 / 02期
关键词
850 hPa winds; dew point depression; westerly component/veering/backing; freezing level;
D O I
暂无
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
Study of 186 (168) cases of heavy ( :65 runt) to very heavy rainfall (>125 mm) occurred at Santacruz (Colaba) during 21 selected years (normal/deficient All India monsoon years) between 1966 and 2005 suggests that (i) when the low level westerly at 850 hPa is reported >= 30 knots by Minicoy/Aminidivi islands or any other station along the west coast of peninsular India from Thiruvanauthpuram to Mumbai and (h) Wind-Temperature-Humidity (WTH) index reaches critical value, very heavy to extremely heavy (> 250 nun) rain occurs over Mumbai and suburbs. Based on above model even unprecedented rainfall of 26 July (944 mm) and very heavy rainfall of 09 September 2005 (223 mm) have been forecast for all domestic flights in the significant weather charts by indicating occasional cb around Mumbai (VABB) 24-30 hours early.
引用
收藏
页码:229 / 240
页数:12
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