Suomi NPP CrIMSS EDR Algorithms: Porting and Validation

The Suomi National Polar-orbiting Partnership (NPP) was launched October 2011.  On board NPP are the Advanced Technology Microwave Sounder (ATMS) and Cross-track Infrared Sounder (CrIS) instruments that make up the Cross-track Infrared and Microwave Sounder Suite (CrIMSS).  The primary products of the CrIMSS Environmental Data Record (EDR) include global temperature, moisture and pressure vertical profiles. The CrIMSS EDR operational code has been made available by the Integrated Program Office (IPO) / Joint Polar Satellite System (JPSS) mission office.  The MX6 version has been made functional in a Linux/Unix environment for use in algorithm validation by removing portions of the operational code not related to the CrIMSS, and by adding interfaces with the CrIMSS science code.  While anticipating the NPP launch, validation of the CrIMSS EDR algorithms had to be performed using synthetic and proxy data.  The Infrared Atmospheric Sounding Interferometer (IASI) on board the METOP-A satellite provided all the information needed to generate CrIS proxy data.  The Advanced Microwave Sounding Unit (AMSU) and Microwave Humidity Sounder (MHS), also on METOP-A, provided observations for ATMS proxy data.  The IASI/AMSU/MHS proxy data has allowed for the tuning and testing of the CrIMSS code and provided an early evaluation of the EDR performances.  The same procedures have been used to characterize the CrIMSS forward model biases and tuning parameters using the real data from the NPP satellite. This presentation will provide an overview of porting and implementing the CrIMSS EDR operational code, representations of CrIMSS EDR algorithm performance using proxy data, and resulting CrIMSS EDR retrieval results.