A proposal for maintaining the current s-NPP and NOAA-20 fusion radiance products to provide continuity with aqua modis measurements. As background for the viirs+cris fusion radiance product, modis…

The University of Wisconsin System has been awarded a $240,000.00 federal grant from the National Aeronautics and Space Administration (NASA) to maintain and continue the production of the Suomi National Polar-orbiting Partnership (S-NPP) and NOAA-20 Fusion Radiance Products. These products are designed to provide continuity with the Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) measurements, which are critical for various atmospheric and cloud-related data products. The grant will enable the University to fill data gaps in the S-NPP Fusion Radiance Product by using a temporal fusion method to combine S-NPP/Visible Infrared Imaging Radiometer Suite (VIIRS) and NOAA-20 Cross-track Infrared Sounder (CrIS)+VIIRS Fusion Radiances. This contract does not have a set-aside designation and is set to run through December 31, 2027.

A proposal for maintaining the current s-NPP and NOAA-20 fusion radiance products to provide continuity with aqua modis measurements. As background for the viirs+cris fusion radiance product, modis has three bands sensitive to CO2 around 4.3 m and another four around 15 m, two bands sensitive to H2O near 6.7 m, and a band sensitive to ozone near 9.6 m. Viirs has none of these IR bands affected by atmospheric absorption, which results in a degradation of the accuracy of several products, including those associated with clouds (cloud mask, cloud top pressure/height, and thermodynamic phase) and atmospheric water vapor (total precipitable water vapor, upper tropospheric humidity). The fusion radiance product provides an innovative solution to this problem: the team developed a way to construct high spatial resolution spectral bands for viirs based on a data fusion method and now provide, through the atmosphere sips, a product called fsnad that contains twelve additional radiances at 750M spatial resolution for the CO2 (modis bands 24, 25 and 33-36), the O3 (modis band 30), and the H2O (modis bands 27 and 28) spectrally sensitive regions. Our production software for deriving the fusion radiances for both s-NPP and NOAA-20 is mature and fully integrated in the atmosphere sips (or a-sips) operations. While the full record of the NOAA-20 fusion radiance subsetted product was a primary task for the previous proposal, this time, this proposal aims to provide the full record of s-NPP data fusion radiance subsetted product as well. The team proposes to create a full and continuing record of the subsetted s-NPP fusion radiance product by filling the GAP due to the anomaly in the snpp/cris LW and MW range of data by using the temporal fusion method on the snpp/viirs and NOAA-20 cris+viirs fusion radiances. The subsetted data files requested by the ceres team include 5 of the 12 bands (bands 27, 33 through 36) and are spatially subsampled for every other pixel in a row and column.