From Event: SPIE Optical Engineering + Applications, 2018
The radiometric performance of the reflective solar bands (RSBs) of NOAA-20 VIIRS, recently launched on 18 November 2017, is evaluated through an intercomparison with Aqua MODIS. The analysis adapts a “nadir-only” refinement of the simultaneous nadir overpass (SNO) to generate comparison time series for assessment of the on-orbit calibration of NOAA-20 VIIRS RSBs using the official sensor data records (SDRs). The comparison result reveals an unstable and varying early radiometric performance upward of 5%. SNPP VIIRS, the precursor VIIRS, is also used to generate a comparison time series against Aqua MODIS. The result shows that NOAA-20 VIIRS RSBs have a 2 to 8% radiometric deficit relative to SNPP VIIRS RSBs.
Mike Chu, Junqiang Sun, and Menghua Wang, "Evaluation of early NOAA-20 VIIRS RSB radiometric performance using intercomparison with Aqua MODIS," Proc. SPIE 10764, Earth Observing Systems XXIII, 107640W (Presented at SPIE Optical Engineering + Applications: August 22, 2018; Published: 7 September 2018); https://doi.org/10.1117/12.2321095.
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