ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 45 Issue 6 > 2019,45(6):756-765. DOI:10.7519/j.issn.1000-0526.2019.06.002 Prev Next
The Improvement of GRAPES Double Moment Cloud Scheme and Case Study of Cloud Precipitation: Modeling Study of Tropical Convective Cloud via GRAPES_SCM
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Abstract:
In this study, the TWP-ICE case is simulated using GRAPES_SCM. By comparing with the observation data, we found that both the Liuma initial scheme and the WRF single moment scheme (WSM6) can well simulated the development of tropical cloud systems during the TWP-ICE. Besides, the active monsoon period and the monsoon suppression period are also reproduced. The results also show that the vertical distribution of ice-phase hydrometeors simulated by the Liuma initial scheme is very different from that simulated by the WSM6 scheme. Compared with the WSM6 scheme, the Liuma initial scheme produces much more graupel but less ice and snow. In the modified Liuma scheme, the order of calculation of the microphysical process is optimized. In the simulation with the modified Liuma scheme, the mixing ratio of graupel becomes smaller while the mixing ratio of ice and snow becomes larger, and surface the precipitation rate is closer to the observation.
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