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arXiv 1012.4211physics.ao-ph
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对流层风温气象要素的统计模拟

Statistical Modeling for Wind-Temperature Meteorological Elements in Troposphere

A. Virtser, Yu. Shtemler, E. Golbraikh

摘要:

本文提出了一个对流层水平风和温度垂直廓线的综合统计模式。该模型是基于无线电探空仪测量的风和温度在几年。在完全不同的大气条件下测量的剖面表现出定性的相似性,并且适当选择风、温度和高度水平的参考尺度允许将测量数据视为具有普遍特征的随机过程的实现:主成分分析的变换系数的标准分布的平均值、基本函数和参数。大气条件的特征由尺度参考尺度的风温集合的统计特征描述。所提出的方法的高效率是由风-温度垂直廓线的相似性提供的,其允许在风、温度和高度水平的维度参考尺度的低维空间中进行统计建模。高空联合风温分布的知识为模拟实际大气条件下的各种物理过程(如被动标量或杂质的传输、电磁波穿透、内波不稳定性、向湍流的转变等)开辟了广阔的前景。

英文摘要:

A comprehensive statistical model for vertical profiles of the horizontal wind and temperature throughout the troposphere is presented. The model is based on radiosonde measurements of wind and temperature during several years. The profiles measured under quite different atmospheric conditions exhibit qualitative similarity, and a proper choice of the reference scales for the wind, temperature and altitude levels allows to consider the measurement data as realizations of a random process with universal characteristics: means, the basic functions and parameters of standard distributions for transform coefficients of the Principal Component Analysis. The features of the atmospheric conditions are described by statistical characteristics of the wind-temperature ensemble of dimensional reference scales. The high effectiveness of the proposed approach is provided by a similarity of wind - temperature vertical profiles, which allow to carry out the statistical modeling in the low-dimension space of the dimensional reference scales for the wind, temperature and altitude levels. The knowledge of the joint wind-temperature distributions in altitude open wide perspectives for modeling of various physical processes in real atmospheric conditions like the transfer of passive scalars or impurities, the electromagnetic wave penetration, the instability of internal waves, transition to turbulence etc.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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