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《Journal of Anhui Agricultural Sciences》 2011-29
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Analysis on A Severe Convection Weather in Guangdong Province

CHEN Heng-ming et al(Guangdong Service Center for Meteorological Science and Technology,Guangzhou,Guangdong 510080)  
[Objective] A severe convection weather process in Guangdong Province was studied.[Method] By using conventional meteorological observed data and doppler radar data,the development,mechanism,circumfluence characteristics and radar echo wave evolvement structure of a severe convection process in Guangdong on Apr.17th,2011 were analyzed from aspects of weather situation,physical quantity and radar echo wave,and problems,countermeasures in pre-warning service were discussed.[Result] Prefrontal flow vortex,convergence vortex are triggering factors of this supercell;850 and 500 hPa obvious southwest air current provide vapor conditions for the supercess;the existence of inversion layer has significant relationship with hailstone.The maturity time of this supercell is about 2 h.[Conclusion] The study will provide reliable predicting basis for similar weather process in the future,and provide feasibility argument for construction of pre-warning service system.
【CateGory Index】: P458.12
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