27 September 2007 Calibration of NOAA-17 AVHRR solar reflectance channels using the time series observation of the desert target
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Abstract
NOAA has long term experience in the vicarious calibration of the solar reflectance channels of Advanced Very High Resolution Radiometer (AVHRR) onboard NOAA and Metop-A satellites. It has been providing the monthly operational calibration coefficients for all the operational AVHRRs over the past several years. The objective of this paper is to report our current results of the new version of AVHRR operational calibration algorithm. We use the maximum NDVI data and a thermal channel brightness temperature threshold to select non-vegetation pixels free of cloud and dust-storm. Water vapor correction is implemented for Channel 2 measurement. The integrated precipitable water vapor content is derived based on the linear relationship between the brightness temperature difference of the two AVHRR thermal channels and Terra MODIS water vapor products. The results show that this improved algorithm reduces the uncertainty of NOAA-17 AVHRR channel 1 and 2 calibration parameters.
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Fangfang Yu, Fangfang Yu, Xiangqian Fred Wu, Xiangqian Fred Wu, } "Calibration of NOAA-17 AVHRR solar reflectance channels using the time series observation of the desert target", Proc. SPIE 6677, Earth Observing Systems XII, 66770Z (27 September 2007); doi: 10.1117/12.734532; https://doi.org/10.1117/12.734532
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