This report details the developments to the assimilation system at European Centre for Medium Range Weather Forecasts (ECMWF) in preparation for the inclusion of cloud radar and lidar data directly into the Four-Dimensional Variational (4D-Var) system. The work is divided into three sections. Firstly, the off-line observation handling of raw satellite data into Binary Universal Format (BUFR) is outlined. The new variable names required for the Observation Data Base (ODB) are also described. Secondly, the extensive developments to the assimilation system are reported. Finally, the system is tested using CloudSat and CALIPSO radar reflectivity and attenuated backscatter respectively.
BT - ESA Contract Report C1 - Research DA - 2018 LA - eng M1 - WP-3000 N2 -This report details the developments to the assimilation system at European Centre for Medium Range Weather Forecasts (ECMWF) in preparation for the inclusion of cloud radar and lidar data directly into the Four-Dimensional Variational (4D-Var) system. The work is divided into three sections. Firstly, the off-line observation handling of raw satellite data into Binary Universal Format (BUFR) is outlined. The new variable names required for the Observation Data Base (ODB) are also described. Secondly, the extensive developments to the assimilation system are reported. Finally, the system is tested using CloudSat and CALIPSO radar reflectivity and attenuated backscatter respectively.
PY - 2018 T2 - ESA Contract Report T3 - ESA Contract Report TI - Operational assimilation of space-borne radar and lidar cloud profile observations for numerical weather prediction. Assimilation system development for cloud radar and lidar observations ER -