光学学报, 2014, 34 (5): 0501001, 网络出版: 2014-04-18
低平流层下温度结构常数和温度起伏谱幂率廓线的探空测量
Thermosonde Measurement of Temperature Structure Parameter and Temperature Spectral Power-Law Exponent Profile in the Lower Stratosphere
大气光学 光学湍流 谱幂率廓线 探空 atmospheric optics optical turbulence spectral power-low exponent profile thermosonde
摘要
两个不同空间距离上(r1=0.5 m,r2=1 m)温度结构常数廓线C2T(h)和温度起伏谱幂率廓线α(h)由探空仪获得。研制的湍流气象探空仪具有两个微温测量通道,可根据研究内容进行多种组合。除测量温度、湿度、压强、风速、风向、折射率结构常数C2n廓线、Fried参数r0、视宁度εFWHM、等晕角θ0和相干时间τ0等积分计算值外,还可得到高空湍流谱幂率廓线数据。谱幂率测量结果与Zilberman三层谱模式相比,在对流层顶以上有较大区别。这些结果对光传输、光通信、遥感和大气湍流建模等应用领域研究具有十分重要的意义。
Abstract
The temperature structure function C2T(h)(r1=0.5 m, r2=1 m) and power-law exponent α(h) of the temperature fluctuation spectrum as functions of altitude are obtained by a novel thermosonde. The thermosonde provides two-channels for micro-thermal probes in different configurations. This arrangement can not only measure temperature, humidity, pressure, wind speed and direction, refractive index structure constant profile, Fried parameter, seeing, isoplanatic angle, coherence time, but also provide power-law exponent profile of the temperature fluctuation spectrum. It is found the difference between α(h) and Zilberman′s three-layer model in the free troposphere. These results are useful for optical propagations, optical communications, remote sensing and numerical models of atmospheric turbulence.
吴晓庆, 黄宏华, 钱仙妹, 汪平, 崔朝龙. 低平流层下温度结构常数和温度起伏谱幂率廓线的探空测量[J]. 光学学报, 2014, 34(5): 0501001. Wu Xiaoqing, Huang Honghua, Qian Xianmei, Wang Ping, Cui Chaolong. Thermosonde Measurement of Temperature Structure Parameter and Temperature Spectral Power-Law Exponent Profile in the Lower Stratosphere[J]. Acta Optica Sinica, 2014, 34(5): 0501001.