| 宁夏春季沙尘暴与气象要素及环流指数的关系 |
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| 引用本文： | 彭维耿,赵光平,陈豫英.宁夏春季沙尘暴与气象要素及环流指数的关系[J].气象,2005,31(3):17-21. |
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| 作者姓名： | 彭维耿 赵光平 陈豫英 |
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| 作者单位： | 1. 宁夏气象防灾减灾重点实验室,银川,750002
2. 宁夏气象防灾减灾重点实验室,银川,750002;中国气象局兰州干旱气象研究所 |
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| 基金项目： | 国家自然科学基金项目 (40 0 6 5 0 0 2 )，中国气象局项目“宁夏沙尘暴监测预警服务系统研究”共同资助 |
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| 摘 要： | 利用1961-2000年宁夏中北部5站的地面观测资料分析了前期气温、降水对宁夏中北部沙尘暴发生频数的影响，并讨论了亚洲环流指数与沙尘暴发生频数的关系。结果表明：宁夏中北部春季沙尘暴发生的频数与前一年的降水量和前冬气温的关系都呈反相关；春季3、4月沙尘暴的发生频数与同期亚洲环流指数为正相关关系。由于地貌和下垫面的差异以及人类活动的影响，所选各站的春季沙尘发生频数与其上年降水量的相关程度有明显差异；而各站所处的地理位置、上风方下垫面状况的差异可能是造成亚洲环流指数与其沙尘暴发生频数的相关程度差异的原因。
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| 关 键 词： | 沙尘暴 气象要素 环流指数 宁夏 春季 |
Relationship between Spring Sandstorm and Meteorological Elements in Ningxia and Zonal Circulation |
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| Peng Weigeng,Zhao Guangping,Chen Yuying.Relationship between Spring Sandstorm and Meteorological Elements in Ningxia and Zonal Circulation[J].Meteorological Monthly,2005,31(3):17-21. |
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| Authors: | Peng Weigeng Zhao Guangping Chen Yuying |
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| Institution: | Peng Weigeng1 Zhao Guangping 1,2 Chen Yuying1 |
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| Abstract: | Based on the five station data in middle and north Ningxia from 1961 to 2000, the relationship between temperature in last winter and precipitation and frequency of sandstorm are analyzed. The results shows that the frequency of sandstorm in spring is corresponded with precipitation in last year and low air-temperature in winter. In March and April, it is also corresponded with the Asia circulation index. Because of the difference of their surface and peoples activity at each station, the correlation is obviously different too. As for various stations, their different correlation between the sandstorm frequency and Asian circulation in spring maybe just due to their different locations and surface conditions. |
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| Keywords: | sandstorm meteorological elements circulation |
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