锡林郭勒地区近49年沙尘暴特征分析  

Analysis on sand storm characteristics in Xilinguole region

作　　者：史激光[1] 

机构地区：[1]内蒙古自治区锡林浩特国家气候观象台,锡林浩特026000

出　　处：《干旱区资源与环境》2010年第8期63-67,共5页Journal of Arid Land Resources and Environment

基　　金：内蒙古气象局重点科研项目"近地层通量变化特征分析及初级产品加工技术"(nmqxkjc200717)资助

摘　　要：根据锡林郭勒地区1960～2008年49a沙尘暴观测资料,分析了沙尘暴变化特征及影响因子,结果表明:锡林郭勒地区沙尘暴年际变化呈波动式下降趋势。49a出现了两个高发期,一个低发期。春夏两季为高发季,4月份最多,9月份最少。灰色关联度分析表明:影响锡林郭勒地区沙尘暴的主要气象因素排序是:降水>大风>湿度>日照>气压>气温,其中降水和大风是影响沙尘暴的主要限制性因素。The changing characteristics and influencing factors of sand storm during 1960-2006 were analyzed based on the monitoring data of dust storm.The results showed：（1） The annual sand storm fluctuations showed a downward trend and presented two peaks and one trough.（2） The maximum frequencies were occurred in spring and summer,especially in April while the minimum is occurred in September.Wind erosion was the fun-damental account for sand storm.Grey correlation showed the sequence in term of the importance of meteorologi-cal factors was as follows： precipitation gale humidity sunshine duration atmospheric pressure,in which precipitation and gale were the most restrictive factors.

关 键 词：沙尘暴 特征 关联度 

分 类 号：P445.4[天文地球—大气科学及气象学]