呼伦贝尔市大(暴)雪气候特征及类型分析

The Weather Features and Types of Large(Storm) Snow of Hulunbeier City

对呼伦贝尔市16个台站1970—2009年大(暴)雪日进行了统计分析得出:大(暴)雪日地域分布不均匀性,林区多于农区,农区又多于牧区;年代际特征是上世纪70年代与80年代日数相当,且日数较多,到了90年代日数大幅减少,进入本世纪初,大(暴)雪日又呈增多态势;春季3、4月份大(暴)雪日数多、秋季或初冬次之、隆冬反而少的分布特征。呼伦贝尔市大(暴)雪天气有两种主要天气类型。

The large（storm） snow days of 16 stations of Hulun Buir city from 1970 to 2009 were statistically analyzed.The results indicat that the region distribution was uneven： the forest region was more than the agricultural areas,and the agricultural areas more than pastoral areas.The decadal features displayed in both the 70s and 80s of last century were that the number of that days were equal and relatively increased,but it was significantly reduced in 90s.While the large（storm） snow days presented increased trend at the beginning of this century.The distribution characteristics were more snow days of 3 and 4 months in spring,followed by the fall or early winter,but less in midwinter.There are two major weather types of large（storm） snow weather in Hulun Buir City.