Characteristics Analysis of the Sand-dust Weather in Dunhuang Area
Characteristics Analysis of the Sand-dust Weather in Dunhuang Area
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发表时间：
2010
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通讯作者：
Li Guanglin
中科院分区：
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作者：
Li Guanglin
利用敦煌国家标准气候站1951 - 2008年的地面观测资料，分析了敦煌地区沙尘天气的时空变化，结果表明：敦煌地区沙尘天气明显减少，20世纪50年代沙尘天气发生频率最高，沙尘天气以春季最多，秋季最少，年风日数减少、风速变小是敦煌地区沙尘天气减少的主要原因，同时，丰富的沙尘资源和区域效应为沙尘天气的发生提供了必要的物质条件。
According to the data of ground-based observation from 1951 to 2008 at Dunhuang national standard climate station,the spatio-temporal change of sand-dust weather in Dunhuang area was analyzed.The result reveals that the sand-dust weather obviously decreased.It occurred most frequently in the 1950s,and in a year,it occurred most in spring and least in autumn.The annual wind days decrease and wind speed becoming small were the main reasons for sand-dust weather reduction in Dunhuang area.Meanwhile,the circulation causing sand-dust weather there was classifyed in the paper.Ample resources of sand-dust and regional effects provide essential material conditions for sand-dust weather occurrence.