固原市冰雪天气气候特征分析

Analysis of Climatic Characteristics of Ice Snow Weather in Guyuan City

利用固原市6个气象站资料,从降雪日数、降雪量级、积雪日数等方面分析了固原市冰雪天气分布规律,为建立全市大到暴雪预警、气象服务提供了气候背景。结果表明,固原市各地的年平均降雪日数和大雪以上降雪基本上是随着海拔的增高而增多,六盘山全年仅7月未出现过降雪天气,冬季月最多降雪日数出现在2月;固原市年平均积雪天数最少有31 d,年最大积雪深度为35 cm。

Based on the data of six meteorological stations in Guyuan City,this paper analyzed the distribution rule of snowy weather in Guyuan City from the aspects of snowy days,snowfall magnitude and snow cover days,which provided the climatic research foundation for heavy snowfall warning and meteorological services in Guyuan City.The results showed that the annual average snowy days and snowfall basically increased with the increase of altitude in Guyuan City.In Liupan Mountain,snow weather appeared in each month of the year,except July.The most monthly snowy days of winter appeared in February.The average annual snow cover days were at least 31 d,and the maximum snow depth was 35 cm.