| 沙尘天气产生的气候背景及物理机制 |
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| 引用本文： | 邱明宇,王尚荣,王岩宁.沙尘天气产生的气候背景及物理机制[J].气象研究与应用,2005,26(3):30-32. |
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| 作者姓名： | 邱明宇 王尚荣 王岩宁 |
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| 作者单位： | 海南省气象局 海南海口570203
(邱明宇，王尚荣)，乌海市气象局 内蒙古乌海016000(王岩宁) |
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| 摘 要： | 沙尘天气发生频率、强度与大风、干旱过程、异常大气环流的气候背景以及人为因素有关。它的物理过程是地表上升气流把疏松地表尘粒带入空中,并且在一定层结条件下形成和加强的。利用1958~2000年内蒙古中西部70个测站的沙尘暴观测资料,对沙尘暴的地理分布、时间分布特征进行了统计分析。结果表明:内蒙古中西部有三个强沙尘暴多发中心,沙尘暴年代际变化和年际变化较明显,且沙尘暴集中出现在春季的3~5月份。
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| 关 键 词： | 沙尘天气 气候背景 物理机制 |
| 文章编号： | 1001-5191(2005)03-0030-04 |
| 修稿时间： | 2005年7月14日 |
Climate Background And Physical Mechanism For Sand Dust Weather |
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| QIU Ming-yu,WANG Sun-yong,WANG Yan-ning.Climate Background And Physical Mechanism For Sand Dust Weather[J].Journal of Guangxi Meteorology,2005,26(3):30-32. |
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| Authors: | QIU Ming-yu WANG Sun-yong WANG Yan-ning |
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| Institution: | QIU Ming-yu~1,WANG Sun-yong~1,WANG Yan-ning~2 |
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| Abstract: | The frequency and the intensity of the sand dust weather are related to the gale and drought process,the climate background of the unusual atmospheric circulation as well as the human factor concerns,Its physical process is about the surface ascendant current leading the loose surface dust particles to the air,and it forms and strengthens under the certain level condensation condition.This paper conducts the statistical analysis on the geographic distribution of sand storm and the time distribution characteristic by Using the sand storm observation data in mid-west 70 observation stations of Inner Mongolia during 1958~2000.The result indicates that there are three centers of strong sand storm scenes the mid-west of Inner Mongolian,and the decade's change and the year's change of the sand storm is obvious,and also the sand storm mainly appears in spring during March-May. |
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| Keywords: | Sand dust weather Climate background Physical mechanismCategory number: Literature identification code: A |
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