GOES-16 ABI solar reflective channel validation for earth science application

Joel McCorkel, Boryana Efremova, Jason Hair, Marcos Andrade, Brent Holben

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

This paper presents the validation results of GOES-16 Satellite's Advanced Baseline Imager (ABI) obtained from a reflectance-based field campaign undertaken at the Salar de Uyuni in Bolivia in June 2017. In situ ground measurements are used to characterize the surface reflectance and the atmosphere in order to constrain the radiative transfer code and predict at-sensor reflectance (also referred to as top-of-atmosphere (TOA) reflectance) to compare with concurrent GOES-16 ABI measurements. The five-day field campaign provided repeated TOA reflectance estimates, allowing assessment not only of the calibration accuracy of the ABI reflective channels 1, 2, 3, 5 and 6, but also of its stability over the duration of the campaign. The results show that the accuracy of the ABI reflective channels calibration is within specification for channels 1, 3, 5, and 6 - average biases within 2%; for channel 2 the bias is 5%. The estimated uncertainty on the derived biases is 2–2.4%. Some calibration stability issues were present in the ABI calibration at the time of the campaign: (i) a jump on the order of 2% in channels 1 and 6, coincident with an ABI solar calibration event, reflects an instability of the ABI gains in these channels, and (ii) short-term variability in channels 1 and 2 is due to striping (ABI detector-to-detector calibration differences). Continued validation and subsequent reprocessing of ABI reflectance imagery would allow Earth scientists to fully benefit from the high spatial and spectral fidelity of the GOES-16 ABI diurnal measurements at the continental scale.

Original languageEnglish
Article number111438
JournalRemote Sensing of Environment
Volume237
DOIs
StatePublished - Feb 2020

Bibliographical note

Funding Information:
The views, opinions and findings contained in this article are those of the authors and do not represent official NASA, NOAA, or the U.S. Government position, policy, or decision. The authors would like to acknowledge the NASA Earth Observing System Project Science Office for funding assistance for field campaign logistics. We would also like to acknowledge the Laboratory for Atmospheric Physics, part of the Institute for Physics Research at Universidad Mayor de San Andres, La Paz, Bolivia for its support and help during the campaign, in particular to Fernando Velarde and Grover Salvatierra for their help during field work. The authors would like to thank the anonymous referees for providing constructive comments, which helped improving the quality of the paper.

Funding Information:
The views, opinions and findings contained in this article are those of the authors and do not represent official NASA, NOAA, or the U.S. Government position, policy, or decision. The authors would like to acknowledge the NASA Earth Observing System Project Science Office for funding assistance for field campaign logistics. We would also like to acknowledge the Laboratory for Atmospheric Physics, part of the Institute for Physics Research at Universidad Mayor de San Andres, La Paz, Bolivia for its support and help during the campaign, in particular to Fernando Velarde and Grover Salvatierra for their help during field work. The authors would like to thank the anonymous referees for providing constructive comments, which helped improving the quality of the paper.

Publisher Copyright:
© 2019

Keywords

  • Boliva
  • Calibration uncertainty
  • GOES-16
  • GOES-R advanced baseline imager
  • Radiative transfer
  • Reflectance validation
  • Salar de Uyuni
  • Vicarious calibration

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