Improving short-term QPF in Taiwan and vicinity area using VDRAS and WRF

摘要

1.Introduction In this study the Variational Doppler Radar Analysis System (VDRAS),a radar data assimilation system based on the four-dimensional variational (4DVAR) technique,is employed to perform the numerical experiments with the scientific goal focusing on the quantitative precipitation forecast (QPF).The potential of the VDRAS as a research platform for the short-term forecasting of severe storms in the American Great Plains has been demonstrated in several previous studies.