中尺度气象模式预报大气光学湍流的现状与展望

发布时间：2018-01-05 11:38

本文关键词：中尺度气象模式预报大气光学湍流的现状与展望　出处：《激光与光电子学进展》2017年01期 　论文类型：期刊论文

【摘要】：光学湍流预报涉及大气科学、计算数学、光学工程等多个学科以及计算机技术、湍流测量技术等多种技术。提高低平流层下对大气光学湍流的预报能力成为迫切需要。讨论了预报光学湍流时选用中尺度气象模式的原因、具有代表性中尺度气象模式的特点、光学湍流参数化、中尺度气象模式预报光学湍流的研究现状及所面临的挑战等问题,并对该领域下一阶段的发展进行了展望。对符合我国地域气候特征的外尺度参数化公式、中尺度模式与微尺度模式嵌套以及低平流层下非Kolmogorov湍流的统计特征和大气光学湍流参数化新方法进行研究,该研究对提高光学湍流预报的空间分辨率和预报精度具有重要意义。
[Abstract]:Optical turbulence prediction involves many subjects, such as atmospheric science, computational mathematics, optical engineering and computer technology. In order to improve the prediction ability of atmospheric optical turbulence under low stratosphere, it is urgent to improve the technique of turbulence measurement. The reason why mesoscale meteorological model is used to predict optical turbulence is discussed. The characteristics of representative mesoscale meteorological models, the parameterization of optical turbulence, the research status and challenges of mesoscale meteorological models in predicting optical turbulence are discussed. The development of this field in the next stage is prospected. The parameterized formulas of external scale which accord with the regional climate characteristics of China are discussed. The nesting of mesoscale model and microscale model, the statistical characteristics of non-#en0# turbulence under low stratosphere and the new method of atmospheric optical turbulence parameterization are studied. This study is of great significance to improve the spatial resolution and prediction accuracy of optical turbulence prediction.
【作者单位】：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;
【基金】：国家自然科学基金(41275020,41576185)
【分类号】：O436;P49
【正文快照】： 大气中通常存在小尺度折射率起伏,即大气湍流,该现象对大气中声、光和其他电磁波的传播产生不可忽视的影响。大气折射率结构常数C2n是描述大气光学湍流的重要参数,从某种意义上说,已知C2n的时空分布便可计算出大气湍流对光电系统的影响。仪器测量和模式估算是获取C2n时空分布

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