We established a double-level quality control techniques(DQCT).A high resolution numerical simulation on an extremely heavy rainfall process occurring in South China in late August,2018 was car-ried out via the weather research and forecasting(WRF)model,and the simulation data were evaluated based on DQCT.A comparison of the simulation data with observation data produced the following con-clusions:in the background fields,all the weather systems including various scales wind field such as the low in monsoon,the southwesterly airstreams and the mesoscale convective system were successfully simulated according to WRF;in the total rain belt,the meso-γ scale centers of the maximum precipitation was successfully copied;in the 24 h rain belt,the development of the heavy rainfall area was well repro-duced;in the 6 h rain belt,the evolvement of the meso-γ scale rain belt of the heavy rainfall were well forecasted;in the time series of precipitation in Gaotan,the hourly rainfall trend was carefully embodied;the evaluating results from qualitative analysis were also proved right according to the quantitative analy-sis from evaluation indexes.
the extremely heavy rainfallmeso-γ scale rain beltnumerical simulationdouble-level quali-ty control technique
维普
万方数据
