湖北省中尺度试验区地形对气象要素场的综合影响

COMPREHENSIVE EFFECTS OF TOPOGRAPHY ON THE METEOROLOGICAL ELEMENT FIELD IN THE MESOSCALE EXPERIMENT AREA OF HUBEI PROVINCE

摘要:

本文分析了试验区特殊地形的热力、动力作用,得到了与地形尺度相当的平均意义下的地形风环流系统,揭露了它的演变规律及散度场的时空特点,发现地形风辐合场与试验区降水有关。最后讨论了试验区温压距平场的时空特征和试验区地形对气象要素场的综合影响。

Abstract:

In this paper, analysis is performed of the thermodynamic and dynamic effects of the unusual topography in the experiment area of Hubei province, with the obtainment of the topographic wind circulation system in its average meaning, corresponding to the topographic scale. The regularities of its evolution and the temporal and spacial characteristics of the divergence field are thus revealed. It is found that the cony ergence field of topographic wind is related to the precipitation in the area. In the end, discussions are made of the comprehensive effects of the temporal-spaeial characteristics of the temperature-pressure anomaly field and the topography in the experiment area on the meteorological element field.