RAINFALL RE-ESTIMATION ASSOCIATED WITH DIFFERENCES IN THE DETECTION TIME OF RAINFALL BETWEEN X-BAND MP RADAR AND RAINGAUGE

Abstract

 This study estimated rainfall intensity using the time difference in the detection of rainfall between a X-band multi-parameter radar (X-MP radar) and rain gauges. The rainfall intensity was calculated by the time-difference in the detection of rainfall and an equation used to determine the terminal velocity of raindrops. This diameter can be considered to represent the height between ground level and the lower atmosphere, which the X-band MP radar detects. The determination of rainfall intensity (both 1 min and 10 min temporal scales) by X-MP radar was improved at ten raingauge stations which are located 22 to 42 km from the radar site.