华南山区秋冬季节大气光学湍流初步测量分析  

Preliminary Measurements of Atmospheric Turbulence in Autumn and Winter of Southern China Mountain Area

作　　者：吕炜煜[1,2] 苑克娥[1] 魏旭[3] 胡顺星[1] 王建国[3,4] 

机构地区：[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,北京10049 [3]西北核技术研究所,陕西西安710024 [4]西安交通大学电子与信息工程学院,陕西西安710049

出　　处：《大气与环境光学学报》2015年第3期216-223,共8页Journal of Atmospheric and Environmental Optics

基　　金：国家自然科学基金项目(41475001);中科院创新基金(Y03AG31141)资助

摘　　要：通过使用大气相干长度仪测量了华南山区部分月份的昼夜整层大气相干长度,结合使用温度脉动仪获取的近地面部分测量高度的折射率结构常数数据,分析结果表明：在10、11、12月份中,白天11月的测量结果最大,夜间测量结果较为复杂,下半夜的测量数据小于上半夜的测量数据;从频数分布来看,白天中心值为8.5 cm,主要集中在6~12 cm之间,夜间中心值为13.0 cm,主要集中在10~18 cm之间,其平均值明显大于白天的结果;从近地面层对整层大气湍流强度的贡献来看,白天比夜间受到的影响更为明显。The atmospheric coherence length instrument was used to measure atmospheric coherence length for several months in mountainous area of South China. The results show that atmospheric coherence length of November is greater than that of October and December. The measurement results in night are more complex than those of daytime. The results in latter half of the night are greater than those of first half of the nightThe frequency results show that central value of atmospheric coherence length in daytime is 8.5 cm and central value of atmospheric coherence length in night is 13.0 cm. The frequency results of distributing atmospheric coherence length in daytime is mainly center around 6 cm to 12 cm, and the same value in night is mainly center around 10 cm to 18 cm. The mean value of atmospheric coherence length in night is apparently larger than that of daytime. Even the thin layer in surface layer can have much influence on turbulence of the whole atmosphere especially by day.

关 键 词：大气光学湍流 差分像运动法 大气相干长度 折射率结构常数 

分 类 号：P412.2[天文地球—大气科学及气象学] P412