WRF模式不同云微物理参数化方案及水平分辨率对降水预
报效果的影响
黄海波;陈春艳;朱雯娜
【期刊名称】《气象科技》 【年(卷),期】2011(039)005
【摘要】Using the WRF model and GFS data, a torrential rain process resulted from a large-scale synoptic system is back-forecasted, and the impact of different precipitation schemes in the WRF model with three horizontal resolutions (45 km, 15 km and 5 km) on precipitation forecast effects is analyzed.The results show: (1) For a torrential rain attributed to large-scale forcing, especially that mainly resulted from stratus clouds, variations in the microphysical process parameterization schemes have much more influence on precipitation than that of cumulus parameterization schemes. (2) The forecast effect of different microphysical processes differs from light to torrential rain. Among them, the TS score of Kessler scheme is sharply down when the precipitation level is up. As for other six schemes, the TS scores of light and torrential rainfall are much higher than those of moderate and heavy rainfall. (3)For light rainfall, the Lin scheme performs best; for torrential rainfall, the WSM 3 scheme is the best; and for moderate and heavy rainfall, the WSM 5 scheme is the best. In general, WSM3 proves to be the best of 7 schemes, WSM5 the next, and Kessler the worst
WRF模式不同云微物理参数化方案及水平分辨率对降水预报效果的影响
