| 五台山区地形雨减少与能见度减小的可能联系 |
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| 引用本文： | 杨汉波,杨大文,李萍云,雷志栋.五台山区地形雨减少与能见度减小的可能联系[J].气象,2010,36(4):16-20. |
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| 作者姓名： | 杨汉波 杨大文 李萍云 雷志栋 |
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| 作者单位： | 1. 清华大学,水利水电工程系,水沙科学与水利水电工程国家重点实验室,北京,100084
2. 陕西省气象台,西安,710014 |
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| 基金项目： | 水利部公益性行业科研专项经费项目(200801012)资助 |
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| 摘 要： | 为了揭示气溶胶对地形雨的影响,以五台山站为研究站,其南部山下的原平、阳泉为对比站,采用相关性分析研究五台山站与对比站年降水量、降水日数的比值与能见度的关系。结果表明,五台山区能见度显著降低,年降水量及降水日数显著减少;研究站与对比站的年降水量比值、年降水日数的比值均显著减小,并且与能见度显著正相关(p0.05)。究其可能原因,能见度的降低反映出气溶胶浓度的增加,气溶胶浓度的增加抑制了山区地形雨的形成。山区地形雨的减少导致山区水资源的减少;在缺少山顶站的情况下无法捕捉地形雨减少对面平均降水量计算的影响,导致低估面平均降雨量的减少量,低估山区水资源的减少量。
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| 关 键 词： | 地形雨 水资源 气溶胶 |
| 收稿时间： | 2009/7/15 0:00:00 |
| 修稿时间： | 2009/11/23 0:00:00 |
Possible Relation of Decreasing Orographic Precipitation with Declining Visibility in the Wutai Mountain Region |
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| YANG Hanbo,YANG Dawen,LI Pingyun and LEI Zhidong.Possible Relation of Decreasing Orographic Precipitation with Declining Visibility in the Wutai Mountain Region[J].Meteorological Monthly,2010,36(4):16-20. |
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| Authors: | YANG Hanbo YANG Dawen LI Pingyun and LEI Zhidong |
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| Institution: | YANG Hanbo~1 YANG Dawen~1 LI Pingyun~2 LEI Zhidong~1 1 State Key Laboratory of Hydro-Science , Engineering & Department of Hydraulic Engineering,Tsinghua University,Beijing 100084 2 Shaanxi Meteorological Observatory,Xi\'an 710014 |
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| Abstract: | Based on the observations of precipitation and visibility ranges from 1961 to 2005 at the top of the Wutai Mountain,the ratios between the precipitation amount at Wutai Mountain and at the nearby plain stations(Yuanping and Yangquan),together with the relation between visibility and aerosol concentration were analyzed to reveal the effect of aerosols on orographic precipitation.Over the Wutai Mountain region,visibility,together with precipitation and number of wet days have a significant decline.Precipitati... |
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| Keywords: | orographic rainfall water resources aerosols |
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