Acta Scientiarum Naturalium Universitatis Pekinensis

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Study on the Atmospheric Stability Class over Different Surface Conditions

KANG Ling1, ZHANG Hongsheng1, WANG Zhiyuan2, CHEN Jiayi1   

  1. 1.School of Physics, Peking University, Beijing 100871; 2. China Nuclear Power Engineering Co.Ltd., Beijing 100840;
  • Received:2009-11-23 Online:2011-01-20 Published:2011-01-20



  1. 1. 北京大学物理学院, 北京 100871; 2. 中国核电工程有限公司, 北京 100840;

Abstract: According to observational data of meteorological tower and surface in desert, foothill, and coastal zone, methods to calculate the atmospheric stability by using P-T, ΔT, ΔT/U, ΔT/U2, radiation, and wind-direction standard deviation were proposed. Results show that the topography is sensitive for ΔT/U2 and wind-direction standard deviation methods, and the radiation method is suitable for various surface conditions.

Key words: atmospheric stability, meteorological tower, radiation

摘要: 利用戈壁沙漠、低矮丘陵山地和沿海地区等不同下垫面的气象塔层和地面气象观测资料, 分别采用 P- T方 法、ΔT 法、ΔT/U法、ΔT/U2法、辐射法和风向标准差(σθ)法计算大气稳定度, 并进行对比分析。结果表明: ΔT/U2法和风向标准差法对周边地形的影响较敏感, 辐射法是最适合这 3 种下垫面大气稳定度分类的方法。

关键词: 大气稳定度, 气象铁塔, 辐射

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