| 呼伦贝尔市中西部一次沙尘天气的成因分析 |
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| 引用本文： | 苗冬梅,王洪丽,李耀东,李慧,杨春凤.呼伦贝尔市中西部一次沙尘天气的成因分析[J].安徽农业科学,2011,39(12):7513-7515. |
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| 作者姓名： | 苗冬梅 王洪丽 李耀东 李慧 杨春凤 |
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| 作者单位： | 苗冬梅,李耀东(内蒙古呼伦贝尔市新巴尔虎右旗气象局,内蒙古新巴尔虎右旗,021300);王洪丽(内蒙古呼伦贝尔市气象局,内蒙古呼伦贝尔,021008);李慧(内蒙古呼伦贝尔市新巴尔虎左旗气象局,内蒙古新巴尔虎左旗,021200);杨春凤(内蒙古满洲里气象局,内蒙古满洲里,021400) |
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| 摘 要： | 目的]分析呼伦贝尔市中西部的一次沙尘天气的成因。方法]以天气学方法结合生态环境变化,对2006年5月30日呼伦贝尔市中西部一次典型的沙尘天气的发生及影响进行分析,深入地阐述了该市沙尘天气的发生机理,从生态环境变化角度提出沙尘天气的根源所在。结果]在呼伦贝尔草原日益沙化的大环境背景下,春季异常干旱的气候条件是导致这次沙尘的主要因素;严重干旱加上沙尘形成前期的持续升温导致了表土层的疏松干燥,牧草的延迟返青,干土层的加厚,这些客观存在的自然环境和气候因子是诱发这次沙尘天气的决定性因素。从地面到高空的异常增暖,为这次沙尘天气的形成提供了热能条件,促使了大气层结不稳定度的增加;另外,高低空急流的存在对地面大风的形成起到了动量下传的作用。地面蒙古气旋的形成及发展为这次沙尘天气形成提供了动力条件,其带来的大风是沙尘天气形成的直接因素。结论]该研究为该市沙尘天气的防治提供可参考意见。
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| 关 键 词： | 沙尘天气 生态环境 干旱 蒙古气旋 |
Analysis on the Formation Reason of A Dusty Weather in the Middle West of Hulunbeier City |
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| MIAO Dong-mei et al.Analysis on the Formation Reason of A Dusty Weather in the Middle West of Hulunbeier City[J].Journal of Anhui Agricultural Sciences,2011,39(12):7513-7515. |
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| Authors: | MIAO Dong-mei |
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| Institution: | MIAO Dong-mei et al (New Right Banner Meteorological Bureau in Hulunbeier City of Inner Mongolia,New Barag Right Banner,Inner Mongolia 021300) |
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| Abstract: | Objective] The research aimed to analyze the formation reason of a dusty weather in the middle west of Hulunbeier City.Method] By combining the synoptic method with the ecological environment variation,the occurrence and influence of a typical dusty weather which happened in the middle west of Hulunbeier City on May 30,2006 were analyzed.The occurrence mechanism of dusty weather in the city was deeply elaborated,and the source of dusty weather was put forward from the ecological environment variation angl... |
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| Keywords: | Dusty weather Ecological environment Drought Mongolia cyclone |
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