南疆大风气候特征分析  

Analysis on the climatic characteristics of gales in South Xinjiang

作　　者：刘海涛[1] 刘海红 韩春光[3] 王仁春 普云锦 樊巍[5] 

机构地区：[1]和田地区气象局,和田848000 [2]民丰县农业广播电视学校,民丰848500 [3]石河子地区气象局,石河子832000 [4]沙雅县气象局,沙雅842200 [5]四川大学,成都610041

出　　处：《干旱区资源与环境》2014年第3期148-154,共7页Journal of Arid Land Resources and Environment

基　　金：新疆维吾尔自治区气象局科技研究项目(201120)资助

摘　　要：使用南疆33个气象站1960-2010a大风日数资料,综合应用线性倾向估计、离散功率谱、Mannkendall和累计距平方法分析了南疆大风天气的变化趋势、周期及突变特征。结果发现：1）南疆大风总体呈线性递减的趋势,线性递减率为1.3d·（10a）-1,空间上大风集中分布在南疆西部的克州、喀什和南疆东部的哈密地区,平均大风日数在10d·a-1以上,淖毛湖和十三间房两个大风高值中心年均大风日数高达90d和123d,地区之间哈密地区大风最多,年均54d,和田地区最少,年均3.3d;2）年内南疆大风分布呈单峰型,主要在4~7月出现,占全年大风日数的62.0%,70年代大风最多,90年代最少,2000-2010年略有增加;3）南疆大风周期上有着3a、5~7a和10a的振荡周期,整个区域在1987a发生减少性突变。Using gale days data of 33 meteorological stations in the southern Xinjiang during 1960-2010,and the method of comprehensive application of the linear trend estimate,discrete power spectrum,the Mann-Kendall and cumulative anomalies,the gale weather trends,cycles and mutation characteristicsthe in the southern Xinjiang were analyzed.Results showed that：（1） Gale was linearly decreasing trend overall in the southern Xinjiang,linear decreasing rate was 1.3d（10a）-1,gale distributed spatially in Kezhou and Kashi region west of the southern Xinjiang,Hami region-east of southern Xinjiang,the average number gale days was above 10d·a-1,annual gale days of two high value centers in Naomaohu and Thirteen-room were 90d and 123d,gales in Hami region was the most,the average annual gale days was 54d.Hetian region was the least region,the average annual gale days was 3.3d.（2） During the year,gale distribution show a single peak in the southern Xinjiang,mainly in the April to July,accounting for 62.0% of the annual gale days,the most gale occurred in 70 years,the least gale was in 90 years,then slightly increased during 2000-2010.（3） The periods of oscillation were 3a,5a,7a and 10a in the southern Xinjiang,reducing mutation occurred in 1987a in the entire region.

关 键 词：大风日数 气候变化 南疆 

分 类 号：P425[天文地球—大气科学及气象学]