Abstract
Using meso-scale meteorological model FDDA, this study presented a high-definition modeling of a rainstorm process during July 19-21, 2016 in the North China Plain. The meso-scale meteorological model captured the precipitation distribution of the observed rainstorm over North China Plain, showing that the FDDA model has strong ability to simulate and forecast precipitation. The modeling study also revealed the mechanism of rainfall formation with 3-dimensional structures of atmospheric circulation. The subtropical high pressure peripheral warm and wet air flow and the coexistence of cold shear affect the development of convection in the rainfall area. Due to the vapor transport of low-level jet stream, the rainfall area has sufficient water vapor supply. A convergence of the south-easterly and northerly airstreams triggered a strong convection for the summer rainstorm in North China Plain. The study provided us the valuable information for further development of a high-definition modeling of rainstorm process.
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