Community Radiative Transfer Model Development and Support of JPSS-1 Simulations and CubeSat Observing System Simulation Experiments

The Community Radiative Transfer Model (CRTM) is a broadband fast radiative transfer model developed at the Joint Center for Satellite Data Assimilation (JCSDA), with the contributions from multiple U.S. government agencies, universities, as well as private companies. The CRTM has been widely used for the purposes of satellite radiance simulation, data assimilation, instrument calibration/validation, and satellite products retrieval. To support CubeSate Micro-sized Microwave Atmospheric Satellite (MicroMAS) missions, 7 different configured CRTM coefficients have been generated for MicroMAS-1 sensors, covering 8 or 10 channels from 90 to 176 GHz. To support a Joint OSSE study, recently a set of MicroMAS-2 CRTM coefficient was generated, with 12 passive microwave channels providing imagery near 90 and 206 GHz, temperature sounding near 118 GHz, and moisture sounding near 183 GHz. We are working on generating the CRTM coefficients for the future CubeSat Infrared Atmospheric Sounder (CIRAS) sensor, designed at NASA Jet Propulsion Laboratory. The CIRAS has 625 channels in the MWIR regions. As the Joint Polar Satellite System – 1 (JPSS-1) launch date (NLT 2^nd QTR FY17) is approaching, we are also going to generate the JPSS-1 ATMS, CrIS and VIIRS coefficients. In the presentation we will provide more information of these sensors and sample simulations. A brief description of the new features in the CRTM next release will also be given, including CRTM simulation under cloud fraction condition, bug fixing, and sensor coefficient updates.