成都地区近地面大气折射率结构常数的统计分析

大气与环境光学学报 ›› 2015, Vol. 10 ›› Issue (5): 368-375.

成都地区近地面大气折射率结构常数的统计分析

青春1,3 王海涛1 汪平1,2 吴晓庆1

（1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；
2 中国科学院大学, 北京 100039；
3 中国科学技术大学, 安徽合肥 230026）

收稿日期:2014-09-03 修回日期:2014-09-28 出版日期:2015-09-28 发布日期:2015-09-11
通讯作者: 青春（1987-），男，安徽定远人，硕士，主要从事大气光学湍流的测量与模式预报等研究。 E-mail:chunqing@mail.ustc.edu.cn
作者简介:青春（1987-），男，安徽定远人，硕士，主要从事大气光学湍流的测量与模式预报等研究。
基金资助:
国家自然科学基金项目（41275020）资助

Statistical Analysis of the Surface Layer Atmosphere Refractive Index Structure Parameter in Chengdu

QING Chun1,3 , WANG Haitao1 , WANG Ping1,2 , WU Xiaoqing1

(1 Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Science, Hefei 230031, China;
2 Graduate University of Chinese Academy of Science, Beijing 100039, China;
3 University of Science and Technology of China, Hefei 230026, China)

Received:2014-09-03 Revised:2014-09-28 Published:2015-09-28 Online:2015-09-11

摘要/Abstract

摘要：

统计分析了2014年4月至5月期间温度脉动仪和超声风速计测量折射率结构常数Cn²数据。结果显示：无论是白天还是夜晚，两种方法测量Cn²的结果基本一致。与合肥地区相比，Cn²的日变化特征明显但转换时刻存在差异。在10^-15到10^-13m^-2/3量级温度脉动仪和超声风速计测量Cn2的频数分别是74.05%、84.40%；小于10-15的频数分别是24.07%、10.63%；大于10^-13的频数分别是1.89%、4.97%。温度脉动仪和超声风速计测量Cn2的关系为y=-8.5694*10^-16+0.6250x，相关系数为99.24%，并简要分析了两种方法测量Cn²偏差的可能原因。

关键词: 大气湍流, 折射率结构常数, 超声风速计, 温度脉动仪, 激光传输

Abstract:

The refractive index structure parameter Cn² from April to May in 2014 measured by the temperature pulsating instrument and sonic anemometers in Chengdu was statistically analyzed. The results of Cn² measured by two methods agree well with each other both in day and at night. Compared with Hefei, the diurnal variation of the Cn2 is obvious but conversion time is different. Between 10^-15 and 10^-13 level, Cn² frequencies measured by the temperature pulsating instrument and sonic anemometers are 74.05% and 84.40% respectively; the frequencies less than 10^-15 are 24.07% and 10.63% respectively; the frequencies greater than 10^-13 are 1.89% and 4.97% respectively. The relationship of Cn² measured by sonic anemometers and temperature pulsating instrument is y=-8.5694*10^-16+0.6250x, the correlation coefficient is 99.24%, and the possible causes of the Cn² deviation measured by two methods was analyzed in brief.

Key words: atmospheric turbulence, refractive index structure parameter, sonic anemometers, temperature pulsating instrument, laser transmission

中图分类号:

P427.1

青春王海涛汪平吴晓庆. 成都地区近地面大气折射率结构常数的统计分析[J]. 大气与环境光学学报, 2015, 10(5): 368-375.

QING Chun, WANG Hai-Tao, WANG Ping, WU Xiao-Qing. Statistical Analysis of the Surface Layer Atmosphere Refractive Index Structure Parameter in Chengdu[J]. Journal of Atmospheric and Environmental Optics, 2015, 10(5): 368-375.

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