Combination of VIIRS measuements and products with CrIS toward extentding data ulilization

Given the fact that Cross-track Infrared Sounder (CrIS) and the Visible Infrared Imaging Radiometer Suite (VIIRS) currently are onboard the Suomi National Polar-orbiting Partnership (Suomi NPP) satellite and will continue to be carried on the same platform of future Joint Polar Satellite System (JPSS) satellites for the next decade, it is desirable to develop a fast and accurate collocation scheme to collocate VIIRS products and measurements with CrIS to facilitate the applications that need to combine measurements from two sensors such as inter-calibration, geolocation assessment, and cloud detection. In this paper, we will discuss the potential applications to demonstrate the benefits of combination of VIIRS with CrIS as well as an accurate and fast collocation method to collocate VIIRS measurements within CrIS instantaneous field of view (IFOV).