| 甘肃民勤春季沙尘天气的气候特征 |
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| 引用本文： | 何金梅,张杰,王勇.甘肃民勤春季沙尘天气的气候特征[J].甘肃气象,2008,26(3). |
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| 作者姓名： | 何金梅 张杰 王勇 |
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| 作者单位： | [1]兰州中心气象台,甘肃兰州730020 [2]甘肃省干旱气候变化与减灾重点实验室,甘肃兰州730020 |
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| 摘 要： | 用民勤气象站1976—2005年春季沙尘天气的观测资料，分析了沙尘天气的时空变化特征与气象条件、水资源以及人类活动的关系。结果表明：春季民勤地区的沙尘天气大多发生在中午至傍晚，持续时间一般在1-2h。沙尘天气总的发展趋势在减少，它与降水量之间有很好的反相关性；民勤地区特殊的地理位置所形成的气候背景、石羊河流域来水的大幅度减少、水资源不合理的开采与利用、人口增长对生态环境的压力等方面的影响都造成该地春季沙尘天气较多。
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| 关 键 词： | 民勤地区 春季 沙尘天气 成因 |
Climatic Characteristic of Dust Weather in Spring in Minqin of Gansu Province |
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| HE Jinmei,ZHANG Jie,WANG Yong.Climatic Characteristic of Dust Weather in Spring in Minqin of Gansu Province[J].Gansu Meteorology,2008,26(3). |
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| Authors: | HE Jinmei ZHANG Jie WANG Yong |
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| Institution: | 1.Lanzhou Central Meteorological Observatory;Lanzhou 730020;China;2.Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province;China |
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| Abstract: | Based on the meteorological data of dust weather,the daily mean temperature and precipitation in Minqin in spring from 1976 to 2005,the temporal and spatial characteristics of dust weather and relations between dust weather and weather conditions,water resources as well as human activities were analyzed.The results show that most of the dust weather occurred from noon to evening and lasted for 1 to 2 hours,and it presented decreasing trend.Dust weather has negative correlation with precipitation in Minqin a... |
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| Keywords: | Minqin area spring dust weather cause |
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