河北省强对流天气统计分析

利用1999—2006年全省142个基本站的强对流观测资料（5~8月）和2.5°×2.5°分辨率,间隔6 h NCEP/NCAR全球客观分析资料,对河北省强对流天气的时空分布进行了详细统计,结果表明：雷暴、雷雨大风和冰雹空间分布呈北多南少、西多东少的趋势,时间主要集中在6月和7月,5月最少;午后到傍晚为各种强对流天气的日高峰期,冰雹和雷雨大风稍滞后于雷暴。

Statistical Analysis on the Severe Convective Weathers in Hebei Province

Based on the convective weather observations of 2.5°×2.5° resolution from May to August in 142 basic stations in the province from 1999 to 2006 and the NCEP/NCAR global objective analysis data,the detailed statistics of the spatial and temporal distribution of the convective weathers in Hebei Province show that thunderstorms,storms and strong winds and hails occur more in the north than in the south,more in the west than in the east,most frequently in June and July,least in May,the peak of convective weathers is from noon to the evening,hails and storms come later than thunderstorms.