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| 盛夏一次区域性强沙尘暴天气个例分析 | |
| 引用本文： | 李玲萍,罗小玲,王润元.盛夏一次区域性强沙尘暴天气个例分析[J].灾害学,2007,22(4):81-85. |
| 作者姓名： | 李玲萍 罗小玲 王润元 |
| 作者单位： | 1. 中国气象局兰州干旱气象研究所,甘肃省(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;甘肃省武威市气象局,甘肃,武威,733000 2. 甘肃省武威市气象局,甘肃,武威,733000 3. 中国气象局兰州干旱气象研究所,甘肃省(中国气象局)干旱气候变化与减灾重点(开放)实验定室,甘肃,兰州,730020 |
| 基金项目： | 科技部社会公益研究项目 |
| 摘 要： | 利用常规气象观测资料,对2005年7月17日发生在甘肃省河西走廊近20年最强的一次区域性夏季强沙尘暴天气过程从气候成因、天气形势和动力诊断等方面进行了分析探讨,并对天气现象发生前后期地面气象要素的变化进行了研究。结果表明,这次强沙尘暴天气是在河西走廊地区长时间极端干旱的气候背景下,新疆冷空气分裂东移南下,配合本地极有利的热力不稳定层结条件,锋面过境引发了大风沙尘暴天气。沙尘暴发生前后期温度、气压、相对湿度等气象要素有显著性突变。 |
| 关 键 词： | 夏季沙尘暴 气候特点 诊断分析 气象要素突变 河西走廊 |
| 文章编号： | 1000-811X（2007）04-0081-05 |
| 修稿时间： | 2007-04-18 |
Integrated Analysis of a Severe Sand-dust Storm in Summer |
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| Li lingping,Luo xiaoling,Wang Runyuan.Integrated Analysis of a Severe Sand-dust Storm in Summer[J].Journal of Catastrophology,2007,22(4):81-85. | |
| Authors: | Li lingping Luo xiaoling Wang Runyuan |
| Institution: | 1. Institute of Arid Meteorology, CMA, Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province, CMA, Lanzhou 730020, China; 2. Wuwei Meteorological Bureau of Gansu, Wuwei 733000, China |
| Abstract: | Based on meteorological observational data,the process of the strongest regional summer sand-dust storm in nearly 20 years in Hexi Corridor of Gansu province on July 17,2005 is analyzed,including the climatic reasons,weather situation,dynamical diagnosis and the variations of ground meteorological elements.The results show that the sand-dust storm was caused by the extremely drought climatic background in the region of the Hexi Corridor,the Xinjiang cold air going down eastforward,the instable thermal condition and a passing cold front.The ground surface metrological elements such as atmospheric temperature and pressure,relative humidity abruptly changed in the earlier period and the later period of the sand-dust storm. |
| Keywords: | summer sand-dust storm weather characteristic diagnostic analysis abrupt change of meteorological elements Hexi Corridor |
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