摘要
Satellite measurements are an important source of global observations in support of numerical weather prediction（NWP）.The assimilation of satellite radiances under clear skies has greatly improved NWP forecast scores.However,the application of radiances in cloudy skies remains a significant challenge.In order to better assimilate radiances in cloudy skies,it is very important to detect any clear field-of-view（FOV） accurately and assimilate cloudy radiances appropriately.Research progress on both clear FOV detection methodologies and cloudy radiance assimilation techniques are reviewed in this paper.Overview on approaches being implemented in the operational centers and studied by the satellite data assimilation research community is presented.Challenges and future directions for satellite sounder radiance assimilation in cloudy skies in NWP models are also discussed.
Satellite measurements are an important source of global observations in support of numerical weather prediction（NWP）.The assimilation of satellite radiances under clear skies has greatly improved NWP forecast scores.However,the application of radiances in cloudy skies remains a significant challenge.In order to better assimilate radiances in cloudy skies,it is very important to detect any clear field-of-view（FOV） accurately and assimilate cloudy radiances appropriately.Research progress on both clear FOV detection methodologies and cloudy radiance assimilation techniques are reviewed in this paper.Overview on approaches being implemented in the operational centers and studied by the satellite data assimilation research community is presented.Challenges and future directions for satellite sounder radiance assimilation in cloudy skies in NWP models are also discussed.
基金
Supported by the China Meteorological Administration Special Public Welfare Research Fund(GYHY201406011)
NOAA Joint Polar Satellite System(JPSS)Proving Ground and Risk Reduction(PGRR)and GOES-R High Impact Weather(HIW)study programs
