CLEARⅠ夜晚模式和 Hufnagel- Valley(5/7)模式的存疑

2023-06-14 02:07吴晓庆

摘要:本文分析了几种有代表性的[C2n]廓线模式,计算了这些模式的相干长度 、等晕角以及不同大气层湍流贡献百分比。提出了修正的CLEAR Ⅰ夜晚模式,并对Hufnagel- Valley(5/7)模式进行了讨论。

关键词:光学湍流廓线模式;修正的CLEAR Ⅰ夜晚模式;分析与讨论

中图分类号:92.60.hk ,47.27.E 文献标志码:A 文章编号:1001-2443(2023)02-0103-05

引 言

2 湍流模式的整层积分量及近地面层、边界层、自由大气层湍流对整层积分量的贡献

3 修正的CLEAR Ⅰ夜晚模式

4 Hufnagel-Valley 5/7模式的一点存疑

5 结 论

本文归纳分析了几种有代表性的[C2n]廓线模式,计算了这些模式的相干长度[r0]、等晕角[θ0]以及不同大气层湍流贡献百分比,并推算出这些模式的温度结构常数[C2T]廓线,提出了修正的CLEAR Ⅰ夜晚模式,并对Hufnagel- Valley(5/7)模式进行了讨论。结论如下:

(1)首次发现CLEAR Ⅰ夜晚模式的积分量[r0]、[θ0]与来源文献[1]不符,给出了修正的CLEAR Ⅰ夜晚模式表达式。

(2)对流层顶以上H-V(5/7)模式[C2T]是唯一的随高度不是递增而是递减,对流层顶以上[C2n]随高度递减过快存疑。

参考文献:

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[3] 蔡俊,李学彬,詹国伟,等.一个新的海边光学湍流外尺度和Cn2的廓线模式[J].物理学报,2018,67(1):1-15.

[4] YA J H,wu X Q,LUO T,CHUM Q,et al.New Cn2 statistical model based on first radiosonde turbulence observation over Lhasa[J].Journal of the optical society of America A,2020,37(6):995-1001.

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[6] 吴晓庆,杨期科,黄宏华,等.大气光学湍流模式研究-[C2n]廓线模式[J].物理学报,2023,J2(6):069201.

Doubts about the CLEAR Ⅰ Night Model and Hufnagel- Valley(5/7) Model

WU Xiao-qing

(1.Key Laboratory of Atmospheric Optics,Anhui Institute of Optics and Fine Mechanics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China;2.Advanced Laser Technology Laboratory of Anhui Province,Hefei 230037,China;3. Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China)

Abstract: In this paper, several representative [C2n] profile models are analyzed, and the coherence length, isoplanatie angle and integrated contribution of coherence length, isoplanatie angle from different atmospheric turbulence layer are calculated. A modified CLEAR I night model is proposed, and the Hufnagel-Valley (5/7) model is discussed.

Key words: optical turbulence profile model; modified CLEAR I night model; analysis and discussion

(責任编辑:叶松庆)