Updates on SNPP and JPSS-1 OMPS Sensor Data Records

The Ozone Mapping Profiler Suite (OMPS) is one of the five instruments flying on the Suomi-NPP satellite that launched in October 2011. OMPS mission objectives concern atmospheric ozone concentrations and their variations in the Earth atmosphere. OMPS opened its aperture door on 26 January 2012 to begin its Earth observation mission and the sensor data records became available since then. Through the past years of the OMPS mission, the sensor calibration as well as its associated SDR algorithm have been significantly improved, SDR reprocessing for this early mission phase has been recently performed using updated calibration coefficients. The calibration coefficients are in relation to several important sensor aspects: detector performance, stray light correction, and wavelength registration. Particularly, sensor wavelength knowledge and correcting for internally scattered stray light have been two calibration challenges for OMPS in-flight performance. Reprocessing result has demonstrated the updated calibration coefficients as well as the modified algorithms have successfully removed and corrected sensor effects that are inherent to the sensor hardware, therefore, elevated SDR data quality at the OMPS attainable level. Validation of the reprocessed SDRs shows 2% or less radiometric uncertainty that meet SDR products requirement. We present our calibration algorithm and calibration results while we offer lessons learned during the five plus years of operation of OMPS.