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《Meteorology and Disaster Reduction Research》 2018-02
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Diagnostic Analysis of Windy Weather Caused by Cold Front in the West-Central of Zhejiang Province in Late February 2017

Mao Chengyan;Gong Liqing;Sun Hangyuan;Li Haowen;Quzhou Meteorological Bureau;School of Atmospheric Sciences,Sun Yat-sen University;Guangzhou Meteorological Observatory;  
An analysis of windy weather caused by passing cold front happened in the west-Central of Zhejiang province from February 20 to 21,2017 was performed using conventional observation surface data and NCEP reanalysis data of every6 h.The results show that the strong barometric gradient induced by Siberian cold high with East Asia major trough is the main reason for this event;the downward momentum transportation from the upper trough is the key factor making wind during this period stronger than those in general cold front;secondary circulation caused by the union of descending motion in the inflow area of the upper westerly jet and ascending motion before the ground cold front is the enhanced condition.
【Fund】: 浙江省气象局预报员专项(编号:2017YBY13)
【CateGory Index】: P458.123
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