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《热带气象学报(英文版)》 1996-01
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ON ENVIRONMENTAL CONDITIONS OF THE GENESIS OF TORNADO IN THE ZHUJIANG RIVER DELTA IN SPRING

Wang Peilin (Department of Atmospheric Sciences, Zhongshan University, Guangzhou, 510275)  
Using observational data and the data of disastrous investigation of tornado in Zhujiang River Delta and Guangzhou's sounding from March to May of 1976-1983, the environmental conditions of genesis of tornado are analysed and compared with those of nontornadic local storm. It is found that the favorable conditions of genesis of tornado are lower pressure, unstable stratification and stronger wind in the deep layer of troposphere and higher temperature and humidity in low level, among which, lower pressure, more unstable stratification and layer wind are primary conditions for a severe local storm to possibly develop into a storm with accompanying tornado. The tornado mechanism is not related to vertical wind shear.
【CateGory Index】: P445
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