ESTIMATION OF THE GROUND SURFACE RAINFLL DISTRIBUTIONS IN MOUNTAINOUS REGIONS USING TRMM/PR

Abstract

The purpose of this paper is to bridge the gap between the observations by surface rain gage and by ground based radar using TRMM/PR information, in order to extract qualitative information on surface rainfall distribution in mountainous regions as characteristics of horizontal rainfall distribution. First, TRMM/PR information was verified using a conventional radar and ground observations. Then, the horizontal distribution and the vertical profile of the radar reflectivity observed by TRMM/PR corresponded to the distributions of the ground based rainfall radar very well. Next, the vertical structural analysis of rainfall was performed using TRMM/PR. As a result, there is a linear relation to rainfall intensity and an altitude, and it was sho