合肥地区大气风速风向联合概率密度函数研究

大气与环境光学学报 ›› 2012, Vol. ›› Issue (5): 327-332.

合肥地区大气风速风向联合概率密度函数研究

吴延徽, 吴毅, 侯再红, 张彩云, 李菲, 张守川

(中国科学院安徽光学精密机械研究所中国科学院大气成分与光学重点实验室，安徽合肥 230031)

收稿日期:2012-02-16 修回日期:2012-04-25 发布日期:2012-10-21
通讯作者: 吴延徽（1987-），男，安徽芜湖人，研究生，主要从事激光大气传输光电测试技术研究。 E-mail:wuyanhuiverygood@163.com
作者简介:吴延徽（1987-），男，安徽芜湖人，研究生，主要从事激光大气传输光电测试技术研究。

Joint Probability Density Function Varying with Wind Speed and Direction in Hefei Area

WU Yan-hui, WU Yi, HOU Zai-hong, ZHANG Cai-yun, LI Fei, ZHANG Shou-chuan

(Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciencs, Hefei 230031, China)

Received:2012-02-16 Revised:2012-04-25 Online:2012-10-21

摘要/Abstract

摘要：

在光电扫描系统中，热晕驻区会对激光大气传输能量产生严重的衰减，而热晕驻区出现的概率是由大气风速风向联合概率决定的。由合肥地区2007年5月至2011年6月的对流层风廓线雷达1 h平均风场数据，根据最小二乘法原理，分别拟合Frechet、Gumbel和Weibull概率分布，得到拟合参数及相关系数和剩余标准差，从而比较得到最优分布模型；在上述方法拟合不出较好结果的情况下，由样本数据，根据圆形正态概率分布的特点，计算出纬向风和经向风平均值和均方差，这样也可以得到风场概率随风速和风向的关系，从而计算某一风场对应的概率。

关键词: 激光大气传输, 光电扫描系统, 风场, 联合概率

Abstract:

In photoelectricity scanning system, stagnation zoon of thermal blooming makes energy of laser propagation decrease through atmosphere. The probability of stagnation of thermal blooming is decided by joint probability of wind speed and direction of atmosphere. Based on the wind profile radar one hour average wind field data from May 2007 to June 2011, according to the least square method, Frechet, Gumbel and Weibull probability distribution were fitted. The fitting parameters, correlation coefficient and residual standard deviation were obtained. The optimal model was achieved by the comparison of different results. In condition of no good fitting result of above method, based on sample data, according to the characteristics of circular normal probability distribution, zonal wind and meridional wind average value and mean square deviation can be calculated. The relationship of wind field probability varying with wind speed and direction can be obtained so as to obtain probability for some wind field.

Key words: laser propagation through atmosphere, photoelectricity scanning system, wind field, joint probability density function

中图分类号:

P413.2+1

吴延徽吴毅侯再红张彩云李菲张守川. 合肥地区大气风速风向联合概率密度函数研究[J]. 大气与环境光学学报, 2012, (5): 327-332.

WU Yan-Hui, WU Yi, HOU Zai-Hong, ZHANG Cai-Yun, LI Fei, ZHANG Shou-Chuan. Joint Probability Density Function Varying with Wind Speed and Direction in Hefei Area[J]. Journal of Atmospheric and Environmental Optics, 2012, (5): 327-332.

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