West Sumatra Radar-Raingauge Integrated Data Version 1.1

This is a gridded data set of precipitation over West Sumatra in Indonesia which is based on an integration technique of weather radar and ground-based raingauge data. We first derived an empirical relationship between radar and raingauge measurements. By using the relationship, we converted radar measurements into precipitation at each grid point. As pre-processing radar data, the effect of mountain shadow was taken account of. For evaluation of the effect, we developed a tool for analysing visibility of targets from radar using gridded terrain data. The effect of rain attenuation due to short wavelength of the radar was not considered.