An Evaluation of the Performance of the CWB NFS Model for Warm-Season Rainfall Distribution and Propagation over the East Asian Continent

This study evaluates the performance of the regional operational model at Central Weather Bureau (CWB), the Nonhydrostatic Forecast System (NFS), in capturing the general distribution and eastward propagation of warm-season rainfall within the diurnal cycle in Hovmller (longitude-time) space over the East Asian continent. The Tropical Rainfall Measuring Mission (TRMM) 0.25 rain-rates are used to evaluate the NFS coarse domain (45 km) 12 -36 h QPFs during May -August, 2002 -2005 both qualitatively and quantitatively.