Useful Precursor Weather Conditions for Hail-Event Forecasting in the Beijing-Tianjin Region

作     者：YUAN Wei SUN Jian-Qi YU Xiao-Ding CHEN Ming-Xuan XIAO Xian 

作者机构：China MeteorologicalAdministration Training Centre Beijing 100081 China Nansen-Zhu International Research Centre Institute of Atmospheric Physics Chinese Academy of Science Beijing 100029 China Institute of Urban Meteorology China MeteorologicalAdministration （CMA） Beijing 100089 China 

出 版 物：《Atmospheric and Oceanic Science Letters》 (大气和海洋科学快报（英文版）)

年 卷 期：2011年第4卷第3期

页      面：168-172页

学科分类：07[理学] 070601[理学-气象学] 08[工学] 0706[理学-大气科学] 0825[工学-航空宇航科学与技术] 

基　　金：supported by the Scientific Research Foundation for Returned Scholars of the State Personnel Ministry of China,the Research Foundation of Institute of Urban Meteorology, CMA (Grant No. UMRF 200809) the R&D Special Fund for Public Welfare Industry (Meteorology) (Grant No. GYHY200906003) the National Basic Research Program of China (Grant No. 2009CB421406) 

主　　题：hail event Beijing-Tianjin region forecasting 

摘      要：Hail is one of the important weather disasters that affects the Beijing-Tianjin(BT) *** better understand and to improve the forecasting of hail events over the BT region,the precursor weather conditions for hail based on 30 previous hail events were *** was found that the high-level trough and low-level cold front over the Mongolian region,the accumulated convective available potential energy,the decrease of the height of the 0℃-isotherm in the morning,and the persistence and intensification of these factors from morning to afternoon are valuable clues for forecasting the occurrence of hail events over the BT region.