N20 VIIRS RSB calibration algorithms and results: collection 2.0

The NOAA-20 (N20) satellite, previously the Joint Polar Satellite System-1 satellite, was launched on November 18, 2017. One of the five major scientific instruments aboard the satellite is the Visible Infrared Imaging Radiometer Suite (VIIRS). VIIRS scans the Earth’s surface in 22 spectral bands, 14 of which are the reflective solar bands (RSBs) with band center wavelengths from 0.412 to 2.25 μm. VIIRS regularly performs on-orbit radiometric calibration of its RSBs, primarily through the observations of the onboard solar diffuser (SD). The on-orbit change of the SD’s bidirectional reflectance distribution function, known as the H-factor, is determined by the onboard SD stability monitor (SDSM). Since the Hfactor exhibits angular dependence, obtaining the H-factor along the SD to the telescope direction is a challenge for the NOAA-20 VIIRS. Recently, Collection 2.0 of the NASA Land Science Investigator-led Processing Systems (SIPS) products were released. As a part of this reprocessing effort, we made two major improvements in the N20 VIIRS RSB radiometric calibration. One is the improved SD and SDSM attenuation screen transmittance functions, obtained by using calibration data collected during both the yaw maneuver and a small portion of regular orbits, resulting in a higher quality H-factor for the SDSM view. Another is the use of the H-factor for the telescope view, derived from the H-factor for the SDSM view, by using the results for the SNPP VIIRS. In June 2019, we delivered a set of mission-long N20 VIIRS Collection 2.0 RSB radiometric calibration look-up-tables. These tables have been employed by the NASA Land SIPS group to reprocess the entire time series of the NOAA-20 VIIRS products. In this paper, we discuss the Collection 2.0 NOAA-20 VIIRS RSB calibration algorithms and results.

[1]  Xiaoxiong Xiong,et al.  Modeling the Detector Radiometric Gains of the Suomi NPP VIIRS Reflective Solar Bands , 2015, IEEE Transactions on Geoscience and Remote Sensing.

[2]  Xiaoxiong Xiong,et al.  Examination of the angular dependence of the SNPP VIIRS solar diffuser BRDF degradation factor , 2014, Optics & Photonics - Optical Engineering + Applications.

[3]  Zhipeng Wang,et al.  SNPP VIIRS RSB on-orbit radiometric calibration algorithms Version 2.0 and the performances, part 1: the algorithms , 2020 .

[4]  Xiaoxiong Xiong,et al.  Sensor on-orbit calibration and characterization using spacecraft maneuvers , 2007, 2007 IEEE International Geoscience and Remote Sensing Symposium.

[5]  Xiaoxiong Xiong,et al.  Determination of the SNPP VIIRS SDSM Screen Relative Transmittance From Both Yaw Maneuver and Regular On-Orbit Data , 2016, IEEE Transactions on Geoscience and Remote Sensing.

[6]  Junqiang Sun,et al.  Visible Infrared Imaging Radiometer Suite solar diffuser calibration and its challenges using a solar diffuser stability monitor. , 2014, Applied optics.

[7]  X. Xiong,et al.  Discovery and characterization of on-orbit degradation of the Visible Infrared Imaging Radiometer Suite (VIIRS) Rotating Telescope Assembly (RTA) , 2012, Optics & Photonics - Optical Engineering + Applications.

[8]  Xiaoxiong Xiong,et al.  Impacts of the Angular Dependence of the Solar Diffuser BRDF Degradation Factor on the SNPP VIIRS Reflective Solar Band On-Orbit Radiometric Calibration , 2017, IEEE Transactions on Geoscience and Remote Sensing.

[9]  Xiaoxiong Xiong,et al.  Suomi-NPP VIIRS Solar Diffuser Stability Monitor Performance , 2016, IEEE Transactions on Geoscience and Remote Sensing.

[10]  Xiaoxiong Xiong,et al.  Products of the SNPP VIIRS SD Screen Transmittance and the SD BRDFs From Both Yaw Maneuver and Regular On-Orbit Data , 2017, IEEE Transactions on Geoscience and Remote Sensing.

[11]  Xiaoxiong Xiong,et al.  Suomi NPP VIIRS Solar Diffuser BRDF Degradation Factor at Short-Wave Infrared Band Wavelengths , 2016, IEEE Transactions on Geoscience and Remote Sensing.

[12]  D. Moyer,et al.  JPSS-1 VIIRS reflective solar band on-orbit calibration performance impacts due to SWIR nonlinearity artifacts , 2016, Remote Sensing.

[13]  G. Thuillier,et al.  The Solar Spectral Irradiance from 200 to 2400 nm as Measured by the SOLSPEC Spectrometer from the Atlas and Eureca Missions , 2003 .

[14]  Eric Johnson,et al.  VIIRS on-orbit optical anomaly: investigation, analysis, root cause determination and lessons learned , 2012, Optics & Photonics - Optical Engineering + Applications.

[15]  Robert E. Wolfe,et al.  JPSS-1/NOAA-20 VIIRS early on-orbit geometric performance , 2018, Optical Engineering + Applications.

[16]  Zhipeng Wang,et al.  Lunar Calibration and Performance for S-NPP VIIRS Reflective Solar Bands , 2016, IEEE Transactions on Geoscience and Remote Sensing.

[17]  Xiaoxiong Xiong,et al.  Determination of the NOAA-20 VIIRS screen transmittance functions with both the yaw maneuver and regular on-orbit calibration data. , 2020, Applied optics.

[18]  Zhipeng Wang,et al.  On-Orbit Radiometric Calibration of Suomi NPP VIIRS Reflective Solar Bands Through Observations of a Sunlit Solar Diffuser Panel , 2015, IEEE Transactions on Geoscience and Remote Sensing.

[19]  Xiaoxiong Xiong,et al.  Early On-Orbit Performance of the Visible Infrared Imaging Radiometer Suite Onboard the Suomi National Polar-Orbiting Partnership (S-NPP) Satellite , 2014, IEEE Transactions on Geoscience and Remote Sensing.