Assimilation of MWHS-2/FY-3C 183 GHz Channels Using a Dynamic Emissivity Retrieval and Its Impacts on Precipitation Forecasts: A Southwest Vortex Case

The dynamic emissivity retrieved from window channels of the microwave humidity sounder II (MWHS-2) onboard China Meteorological Administration’s FengYun (FY)-3C polar orbiting satellite can provide more realistic over lands and potentially improve numerical weather prediction (NWP) forecasts. However, whether assimilation with works for precipitation forecasts complex geography is less investigated. In this paper, a typical precipitating case generated by Southwest Vortex selected Weather Research Forecasting data (WRFDA) system applied to examine impacts assimilating MWHS-2/FY-3C uses atlas on results indicate that use 89 GHz channel apparently increases used number does initial fields 24-hour (from 0000 UTC 24 June 2016 25 2016) distribution intensity except rainfall 100 mm. But these positive are not evidently better than those atlas. general, still suggest future in terrain promising.