Initial assessment of radiometric performance of N20 VIIRS reflective solar bands using vicarious approaches

Details

• Journal Title:
  Earth Observing Missions and Sensors: Development, Implementation, and Characterization V
• Personal Author:
  Xiong, Xiaoxiong ; Wu, Aisheng ; Chang, Tiejun ; Cao, Changyong
• NOAA Program & Office:
  NESDIS (National Environmental Satellite, Data, and Information Service) ; STAR (Center for Satellite Applications and Research)
• Description:
  The newly launched (November 18, 2017) polar-orbiting satellite of the Joint Polar Satellite System (JPSS-1), now transitioned to NOAA-20, is the follow-on mission to the SNPP (Suomi National Polar-orbiting Partnership) satellite, launched six years ago. NOAA-20 leads SNPP by a half orbit or about 50 minutes. The Visible Infrared Imaging Radiometer Suite (VIIRS) is a key sensor onboard both NOAA-20 and SNPP spacecraft with nearly identical band spectral responses. Similar to the heritage sensor MODIS, VIIRS has on-board calibration components including a solar diffuser (SD) and a solar diffuser stability monitor (SDSM) for the reflective solar bands (RSB), a V-groove blackbody for the thermal emissive bands (TEB), and a space view (SV) as background reference for calibration. This study provides an initial assessment of calibration of the NOAA-20 VIIRS reflective solar bands (RSB) by intercomparison with measurements from SNPP VIIRS using various vicarious approaches. The first approach is based on a double difference method using observations from simultaneous nadir overpasses (SNO) with Aqua MODIS. The second is from the collected reflectances over the widely used Liby-4 desert site from 16-day repeatable orbits so each data point has the same viewing geometry relative to the site. The third approach is to use the frequent overpasses over the Dome C snow site. Results of this study provide useful information on NOAA-20 VIIRS post-launch calibration assessment and preliminary analysis of its calibration stability and consistency for the first 6 months.
• Source:
  Earth Observing Missions and Sensors: Development, Implementation, and Characterization V, 118, 33
• DOI:
  https://doi.org/10.1117/12.2324756
• Format:
  pdf
• Publisher:
  SPIE
• Document Type:
  Journal Article
• Rights Information:
  Other
• Compliance:
  Library
• Main Document Checksum:
  urn:sha-512:75f03c6eb589f7157be296e98b74fe6c3170e71e1bac02240cbb853096a76a35588f43f383a7c69073cb0236b0a3d78fd86e7e480b38ad7c5d4c305d09681757
• Download URL:
  https://repository.library.noaa.gov/view/noaa/69097/noaa_69097_DS1.pdf
• File Type:
  [PDF - 415.56 KB ]