摘要
利用呼和浩特市6个气象站1971-2009年冰雹天气实测资料,统计分析了该市冰雹日数的年际变化、月际变化及空间分布的时空特征,在此基础上,应用地理信息系统对冰雹灾害性天气进行危险性区划。分析表明:冰雹灾害在呼和浩特地区出现频率呈年减少趋势。降雹主要集中在5-9月份,降雹日数以夏季居多,春末、秋初也时有发生。由呼和浩特市北部至南部地区冰雹发生危险性等级逐渐降低。武川北部地区危险性级别最高,托县、和林、清水河属于低危险区,其它地区为中等危险区。
The annual variation and monthly changes of hail and its spatial distribution were analyzed in Hohhot city based on the climate data from 1971 to 2009 by six weather stations,with that,the disastrous weather dominated by hail hazard zoning has been conducted using GIS.The results showed that the frequency of hail reduced year by year on Hohhot regions,hailstones were mainly focused on May to September,number of hail days was greater in summer and hail happened occasionally in late spring and early autumn.Danger classes occurred hail had gradually reduced from the south to the north in Hohhot city,the highest of danger classes was in Wuchuan region,Tuo county,Helin and Qingshuihe belonged lower danger classes,other places were medium regions.
出处
《内蒙古农业科技》
2012年第6期84-85,共2页
Inner Mongolia Agricultural Science and Technology
