Character istics Ana lysis of the Sand - dustWea ther in Dunhuang Area

J4 ›› 2010, Vol. 28 ›› Issue (1): 59-64.

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Character istics Ana lysis of the Sand - dustWea ther in Dunhuang Area

GAO Zhen-Rong^1,2, SHAO 　Liang³, LI Guang-Lin⁴

1.Institute of A rid M eteorology, CMA; Key Laboratory of A rid Clim ate Change and Reducing D isaster of Gansu Province; Key Open Laboratory of A rid Clim ate Change and D isaster Reduction of CMA, Lanzhou 730020, China;2. J iuquan M eteorological B ureau of Gansu Province, J iuquan 735000, China; 3. Lanzhou M eteorological B ureau of Gansu Province, Lanzhou 730020, China; 4. Dunhuang M eteorological B ureau of Gansu Province, Dunhuang 736200, China

Received:2009-11-25 Revised:2001-01-05 Online:2010-04-01 Published:2010-04-01

敦煌地区沙尘天气特征分析

高振荣^１，２，邵　亮^３，李光林^４

1. 中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,中国气象局干旱气候变化与减灾重点开放实验室,甘肃　兰州　730020; 2. 甘肃省酒泉市气象局,甘肃　酒泉　735000;3. 甘肃省兰州市气象局,甘肃　兰州　730020; 4. 甘肃省敦煌市气象局,甘肃　敦煌　736200

作者简介:高振荣（１９５７－）男，汉族，甘肃酒泉人，工程师，主要从事天气预报及气候分析．Ｅ－ｍａｉｌ：ｇａｏｚｒｏｎｇ＠１６３．ｃｏｍ
基金资助:
中国气象局兰州干旱气象科学研究基金项目（ＩＭＡ２００８－０２）资助

Abstract

Abstract:

According to the data of ground - based observation from 1951 to 2008 at Dunhuang national standard climate station, the spatio - temporal change of sand - dustweather in Dunhuang area was analyzed. The result reveals that the sand - dust weather obviously decreased. It occurred most frequently in the 1950 s, and in a year, it occurred most in sp ring and least in autumn. The annual wind days decrease and wind speed becoming smallwere the main reasons for sand - dustweather reduction in Dunhuang area. Meanwhile, the circulation causing sand - dustweather there was classifyed in the paper. Amp le resources of sand - dust and regional effects p rovide essentialmaterial conditions for sand - dustweather occurrence.

Key words: dustweather, characteristic, weather system, sand - dustweather forecast

摘要：

根据敦煌国家基准气候站1951年1月至2009年2月地面观测资料,利用要素时间演变序列分析了近60 a来敦煌沙尘天气的时间演变特征。分析表明,敦煌地区沙尘天气呈明显的递减趋势,20世纪50年代呈高发期,季、月差异显著,呈“单峰型”分布,春季最多,秋季最少。年大风日数减少,平均风速减小是敦煌沙尘天气减少的主要气象原因。并对形成敦煌沙尘天气的天气系统进行了环流分型。丰富的沙尘源和地域效应为敦煌沙尘天气的形成提供了必要的物质条件。

关键词: 沙尘天气, 特征, 天气系统, 预报

CLC Number:

P445 ⁺ . 4

GAO Zhen-Rong, SHAO 　Liang, LI Guang-Lin. Character istics Ana lysis of the Sand - dustWea ther in Dunhuang Area[J]. J4, 2010, 28(1): 59-64.

高振荣, 邵　亮, 李光林. 敦煌地区沙尘天气特征分析[J]. J4, 2010, 28(1): 59-64.

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Character istics Ana lysis of the Sand - dustWea ther in Dunhuang Area

敦煌地区沙尘天气特征分析

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