Simulation of a Heavy Snowfall Using Different Microphysical Schemes in the WRF Mode
The WRF model is used to simulate a heavy snowfall event in winter in Lhasa and its surrounding areas on the Qing-hai-Tibet Plateau in China,and the simulation ability of different microphysical parameterization schemes for heavy snowfall events is evaluated.The results show that different microphysical parameterization schemes can basically simulate the temporal and spatial distribution and snowfall of heavy snowfall in Lhasa and surrounding areas,among which the best microphysical parameterization scheme is Goddard 4-ice,which simulates the root mean square error between the cumulative snowfall and the station observation is 0.33 and the correlation coefficient is 0.92.The total snowfall simulated by the Ferrier scheme is higher than that observed,and the simulated values of WSM3 and WSM5 are significantly lower than those of other schemes.