Abstract
A comparison of WRF and MM5 models was conducted to investigate the differences in the performance for a simulation of a heavy rainfall event along the Baiu front. The simulated precipitation pattern from WRF and MM5 roughly agrees with the observations. However, details are different among WRF, MM5, and observations. The position of the heaviest rainfall is found onshore in WRF and the observations, whereas it is found offshore in MM5. The difference in the position is more clearly found in the vertical velocity field. Additionally, the vertical velocity field of WRF is more detailed than that of MM5. Power spectral density of the vertical velocity clearly shows the difference. Sensitivity experiments indicate that this is due to the differences in the numerical scheme for the model dynamics, not in the cloud microphysics.
