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22 August 2020 Investigation of GOES-R ABI cold pixels around fire
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Abstract
The Advanced Baseline Imager (ABI) on-board NOAA’s current Geostationary Operational Environmental Satellite (GOES-16/17) generates a suite of operational products. In October 2017, users and the developer of the fire product reported anomalously cold pixels around fires (CPAF) in the Level 1b 3.9 um channel imagery. Without correction, this anomaly can results in bias of hundreds of degrees for selected pixels. This anomaly was found to be very common in that imagery, though often not immediately discernable. The GOES Calibration Working Group (CWG) investigated this anomaly and found the root cause. Based on this analysis, the ABI vendor revised the re-sampling kernels for the 3.9 um channel, which was successfully implemented into the ground processing system in April 2019. The CPAF anomaly has been eliminated from the L1b 3.9 um imagery since then.
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Xiangqian Wu, Chris Schmidt, Fangfang Yu, and Zhipeng Wang "Investigation of GOES-R ABI cold pixels around fire", Proc. SPIE 11501, Earth Observing Systems XXV, 1150118 (22 August 2020); https://doi.org/10.1117/12.2571067
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