呼伦贝尔市暴雨时空分布特征及类型分析

利用1971-2010年40年的降水资料,对呼伦贝尔市16个测站暴雨日进行了统计分析,结果表明:大兴安岭东侧暴雨日明显多于西侧,且大暴雨日仅出现在岭东的测站(不包括区域自动站),具有明显的区域性;暴雨集中出现在6-8月,7月份为峰值,大兴安岭东侧在5月和9月也有暴雨出现;年代际变化呈波浪形特点,基本上是呈少-多-多-更少的变化规律;年暴雨日数与年降水量呈很好的正相关;呼伦贝尔市产生暴雨主要有三种天气类型。

The Type Analysis and Space-time Distribution Characteristics of Rainstorm in Hulunbeier City

By using the precipitation data of 40 years from1971-2010,the rainstorm amount was statisticed and analysed of 16 observation station of Hulunbeier city,the result showed that:The rainstorm amount of the east in the Great Xing’an Mountain were more than of the west significantly,and heavy rainstorm amount appeared only in observation station of the east in the Mountain(No including regional Automatic station),having clear locality;The rainstorm mainly occured from Jun to Aug,the peak appeared Jul,the rainstorm appeared in May and September in the east of the Mountain;The varying characteristics of annual took on wavy characteristic,the change regulation appeared little-much-much-still less;The annual rainstorm amount had a clear positive correlation with the annual precipitation;There were three weather typies causing of rainstorm in Hulunbeier city.