基于TRMM/TMI的天山西部山区降水研究

Research of precipitation in the western Tianshan Mountain based on TRMM/TMI

由于受到地形条件和自然条件的限制,对山区降水量分布、降水结构的认识还不完整。严重的制约了山区降水规律的研究,进而影响了与之相关方面的研究。随着卫星雷达技术的快速度发展及在相关方面的应用,对降水规律的研究提供一个较好的技术平台。文中以TRMM/TMI卫星观测数据与研究区实测水文气象数据分析了TRMM/TMI卫星对山区降水过程的探测能力以及降水水平分布特征。结果表明:TRMM/TMI卫星反映了TRMM/TMI卫星对山区降水过程有一定的探测能力,能够反映降水量的基本特征,但其值偏小。在平面上其能够反映降水的分布趋势。

Because of the restriction of the topographical condition and the natural condition,people have little understanding to precipitation distribution,the precipitation structure in mountain area,it serious limited the research of precipitation rule in mountainous area,then has affected relevant research related to precipitation.With the fast development and relevant aspect application of artificial satellite and radar technique,it provide a better technology platform to research on precipitation rule.Using the TRMM/TM satellite monitor data and measure hydrology and meteorology data the precipitation process in mountain area and the horizontal distribution characteristic of precipitation were analyzed.The results showed that the TRMM/TMI satellite has certain detect ability to the precipitation process in mountain area,which can reflect the essential feature of precipitation,but its value is smaller.Its can reflect precipitation＇s distributed tendency on the Plane.