10:15 AM - 10:30 AM
[AAS01-06] Model Parameter Estimation with Data Assimilation Using NICAM-LETKF
Keywords:Model Parameter Estimation, Large Scale Condensation, Ensemble Kalman Filter, Liquid Water Path, Radiation Budget, NICAM-LETKF
Extending the previous study, this study explores to improve the forecasts further using other satellite observations. This study estimates the parameter B1 as a global-constant parameter with cloud liquid water (CLW) data observed by GCOM-W/AMSR2. The parameter estimation successfully reduces excessive bias in CLW although precipitation forecasts are degraded. In addition, this study extends to estimate spatial distributions of the B1 parameter. The spatially-varying B1 parameter shows the best agreement to the spatial pattern of observed LWP. This presentation will include the most recent progress up to the time of the meeting.