Assessment of the radiometric calibration accuracy of the thermal emissive bands onboard the NOAA-21 visible infrared imaging radiometer suite and cross-comparison with S-NPP and NOAA-20
There are currently three Visible Infrared Imaging Radiometer Suite (VIIRS) sensors in orbit onboard the S-NPP (15 years), NOAA-20 (9 years), and NOAA-21 (4 years) spacecraft; with two others, JPSS-4 and JPSS-3, planned for launch in 2027 and 2032, respectively. VIIRS provides continuous observations of the Earth’s sur...