莎车县沙尘天气与大风事件的关联性研究  

Analysis of the Correlation between Sand-dust Events and GaleOccurrences in Shache County

作　　者：孙玉华 张鑫 蹇瑷 杜峰 SUN Yuhua;ZHANG Xin;JIAN Ai;DU Feng(Shache Meteorological Bureau,shache 844700,China;Mosuowan Meteorological Station,Shihezi 832000,China;Shihezi Meteorological Bureau,Shihezi 832000,China;Wulanwusu Ecology and Agrometeorology Observation and Research Station of Xinjiang,Shihezi 841314,China)

机构地区：[1]莎车县气象局,新疆莎车844700 [2]莫所湾气象站,新疆石河子832000 [3]石河子气象局,新疆石河子832000 [4]乌兰乌苏生态与农业气象新疆野外科学观测研究站,新疆石河子841314

出　　处：《沙漠与绿洲气象》2024年第6期25-31,共7页Desert and Oasis Meteorology

摘　　要：分析莎车县1991—2020年的沙尘天气与大风事件的关联性,探讨其季节特性与变化趋势。结果表明:沙尘天气频数与大风日数存在显著正相关,尤其是沙尘暴和扬沙天气与大风的关联性更为紧密(相关系数分别为0.597和0.293)。沙尘和大风天气主要集中在春季和夏季,尤其是5月中下旬—6月初为高发时段。大风日数、沙尘与浮尘的年际变化趋势相似,在过去30年中均表现出波动下降的趋势,沙尘暴和扬沙的频数相对稳定。沙尘日数的偏高年型主要出现在20世纪后半叶,21世纪初以特低和偏低年型为主。沙尘暴和扬沙与大风具有季节性关联(集中期的相关性系数>0.3)。The study used Shache county as a case to investigate the correlation between sand-dust events and gale occurrences between 1991 and 2020 and explored their seasonal characteristics and trends of change.The results indicated a significant positive correlation between the frequency of sanddustevents and the number of gale days,with sandstorms and drifting sand events showing a particularly strong association with gale occurrences(correlation coefficients of 0.597 and 0.293,respectively).Sandstorms and gale events predominantly occur during the spring and summer,with peak frequence from mid-to-late May to early June.incidence period.The interannual variation trends for gale days,sandstorms,and floating dust exhibited similar trends,all showing a fluctuating decline over the past three decades.In contrast,the frequencies of sandstorms and drifting sand events remained relatively consistent.Years with an abnormally high number of sandstorm days primarily appeared in the latter half of the 20th century,while the early 21st century was dominated by years with extremely low and relatively low frequencies.The study also revealed a seasonal correlation between sandstorms,drifting sand events,and gale occurrences(correlation coefficients exceeding 0.3 in the concentration period).

关 键 词：大风 浮尘 扬沙 沙尘暴 莎车县 

分 类 号：P425[天文地球—大气科学及气象学]