EarthCARE Simulator ( ECSIM ) EarthCARE : The Earth Cloud , Aerosol and Radiation Explorer Mission

High power W band (94GHz) nadir-pointing radar with Doppler capability Antenna subtended aperture 2.5 m Variable Pulse Repetition Frequency (PRF) 6100-7500 Hz Sensitivity at least -35dBZ @ 20km height Sampling: horizontal: 500m, vertical 100m (vertical resolution 500m) Beam footprint on ground < 800 m Doppler accuracy 1 m/s (for 10 km along-track integration and -19dBZ) Level 1 product: Reflectivity and Doppler profiles ATmospheric LIDar (ATLID) Backscatter UV (355nm) High spectral resolution 3 channels receiver: Rayleigh, copolar Mie and cross-polar Mie Pulse repetition rate 74 Hz Sampling: horizontal: 200m, vertical: 100m Receiver footprint on ground < 30 m 3 deg. off-nadir (backwards) pointing to reduce specular reflection on ice clouds Level 1 product: Attenuated backscatter profile