DISTRIBUTED RUN-OFF FORECASTING SYSTEM USING NATION-WIDE SYNTHETIC RADAR RAINFALL

摘要

PPROBLEM TO BE SOLVED: To solve such a problem wherein the technique for dividing a basin according to the Thiessen method and computing area rainfall according to the observed values yielded by a ground pluviometer has difficulty, in accurately grasping the area rainfall within the basin and cannot correctly reflect rainfall distribution in run-off analysis. PSOLUTION: Provision of runoff forecasting means 1 that uses online national synthetic radar rainfall and a distributed runoff model, a model structure 2 of the distributed runoff model, means 3 and 4 for respectively verifying and correcting national synthetic radar rainfall for use in the runoff forecasting, and rainfall forecasting means 5, using rainfall movement analysis specialized for a target basin of the flood forecasting system make it possible to improve the accuracy of the rainfall distribution data (intensity distribution) that has a large influence on the runoff analysis precision and to correct the problem with the conventional ground pluviometers, i.e., errors in the runoff analysis due to observation errors in the rainfall distribution. PCOPYRIGHT: (C)2009,JPO&INPIT