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Validation of GOES-16 ABI reflective solar band calibration through reanalysis and comparison with field campaign data
Author(s): Xi Shao; Xiangqian Wu; Changyong Cao; Sirish Uprety; Fangfang Yu; Haifeng Qian; Frank Padula; Aaron Pearlman; Taeyoung Choi; Brent Bartlett; Jason Casey
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Paper Abstract

The Advanced Baseline Imager (ABI) is a critical instrument onboard GOES-16 which provides high quality Reflective Solar Bands (RSB) data though radiometric calibration using onboard solar diffuser. Intensive field campaign for post-launch validation of the ABI L1B spectral radiance observations was carried out during March-May, 2017 to ensure the SI traceability of ABI. In this paper, radiometric calibrations of the five RSBs of ABI are evaluated with the measurements by Airborne Visible/Infrared Imaging Spectrometer (AVIRIS-NG) onboard the high-altitude aircraft ER2. The ABI MESO data processed by the vendor with ray-matching to AVIRIS-NG during the field campaign was compared with the AVIRIS-NG measurements for radiometric bias evaluation. Furthermore, there were several implementations and updates in the solar calibration of ABI RSBs which resulted in different versions of detector gains and nonlinear calibration factors. These calibrations included the calibration by the operational ground processing system, by vendor and the calibration with updated nonlinear calibration factor table for striping mitigation and accounting for the integration time difference between solar calibration and Earth view. The North-South Scan (NSS) field campaign data of ABI were re-processed with these calibration coefficients to quantitatively evaluate the detector uniformity change. The detector uniformity difference are traced back to the difference in the implementation of the solar calibration.

Paper Details

Date Published: 7 September 2018
PDF: 10 pages
Proc. SPIE 10764, Earth Observing Systems XXIII, 107640I (7 September 2018); doi: 10.1117/12.2323024
Show Author Affiliations
Xi Shao, ERT, Inc. (United States)
Xiangqian Wu, NOAA National Environmental Satellite, Data, and Information Service (United States)
Changyong Cao, NOAA National Environmental Satellite, Data, and Information Service (United States)
Sirish Uprety, Univ. of Maryland, College Park (United States)
Fangfang Yu, ERT, Inc. (United States)
Haifeng Qian, ERT, Inc. (United States)
Frank Padula, GeoThinkTank, LLC (United States)
Aaron Pearlman, GeoThinkTank, LLC (United States)
Taeyoung Choi, ERT, Inc. (United States)
Brent Bartlett, GeoThinkTank, LLC (United States)
Jason Casey, GeoThinkTank, LLC (United States)


Published in SPIE Proceedings Vol. 10764:
Earth Observing Systems XXIII
James J. Butler; Xiaoxiong (Jack) Xiong; Xingfa Gu, Editor(s)

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