天山山区阿克牙河降水特征分析

Precipitation Features Analysis of Akeya River in Tianshan Mountains Area

基于阿克牙河流域昭苏县气象站1957年—2009年降水量资料,分析了天山山区阿克牙河降水特征。结果表明,因独特地形地貌影响,降水量变化特点呈现出迎风坡大于背风坡,山区大于河谷平原,降水量的垂直带分布和变化十分明显;降水量的年代际变化稳定而年内的季节分布不均匀,夏季降水量最大,春季次之,冬季最少;降水量主要集中在春夏两季。

Based on th e precipitation data of Zhaosu Meteorological Station in Akeya River Basin in 1957—2009, this paper anal-yzed precipitation features of Akeya River in Tianshan Mountains Area. The results showed that the changing characteristics of precipitation amount in windward slope is greater than the leeward slope due to the influence of unique topography, and in the mountain is greater than the river valley plain, and precipitation perpendicular band distribution and change were obvious;interdecadal variation of precipitation amount was stable, but distribution of the season was uneven during the year, rainfall was the largest in summer, less in spring, and the least in winter; precipitation mainly concentrated in the spring and summer.