Ten Years of SNPP VIIRS Reflective Solar Bands On-Orbit Calibration and Performance

The Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the Suomi National Polar-orbiting Partnership (SNPP) has successfully operated on-orbit for nearly ten years since its launch in October 2011, continuously making global observations and improving studies of changes Earth’s climate environment. VIIRS 22 spectral bands, among which 14 are reflective solar bands (RSBs) covering a range from 0.41 to 2.25 ?m. SNPP RSBs primarily calibrated by diffuser (SD), with degradation tracked an SD stability monitor (SDSM). near-monthly scheduled lunar observations, together sensor responses over stable ground targets, have contributed sensor’s mission-long calibration characterization. Numerous improvements been made RSB methodology was launched, reached mature stage after almost operation. is joint NASA/NOAA mission there two teams, NASA Calibration Support Team (VCST) NOAA Sensor Data Record Team, dedicated calibration. In this paper, we focus on performed VCST. methodologies used produce coefficient look up tables latest Level 1B Collection 2 products reviewed incorporated collection described. Recent include removal image striping caused non-uniform SD, method combining data, mitigation effects due recent anomaly measurements, estimation beyond 935 nm, fitting strategy look-up table delivery. Overall, well continue meet design specifications.