喀什地区近43年沙尘暴、扬沙天气

根据喀什地区11个气象观测站的地面气象记录月报表，分析了1961～2003年沙尘暴和扬沙天气现象资料，给出了近43年喀什地区沙尘暴和扬沙天气的时空分布特征及其历史演变特征。结果表明：喀什地区沙尘暴和扬沙发生频率较高，大部分县市是沙尘暴的多发区和易发区、扬沙的高频区和多发区；沙尘暴和扬沙平原地区主要发生春季中后期及夏初，山区主要发生在春季；沙尘暴历史演变总体以减少为主，扬沙平原地区逐渐减少，相反高山站塔什库尔干呈增加态势，沙尘暴和扬沙的减少均是在波动中减少的。

Sand Storm and Sand Blowing in Kashi in Recently 43 Years

Based on monthly meteorological recorders of 11 meteorological stations in Kashi,data of sand storm and sand blowing are analyzed,gives it's spatial tempord and temporal distribution blowing features,and historical evolution blowing features in Kashi in recently 43 years.Results show that the frequency of sand storm and sand blowing to be higher,most regions belong to frequently-occurring areas or areas liable to occurring of the sand storm and sand blowing.Sand storm and sand blowing mostly occur in latter spring and early summer in plain,mostly in spring in the mountainous regions.Overall sand storm were tending to decreasing sand blowing were gradually decreasing in plain regions,on the contrary,it is creasing in Tashikuergan of mountain area.Sand storm and sand blowing were decreasing wavely.