Abstract
The calibration accuracy of High Resolution Infrared Radiation Sounder Mod. 2 (HIRS/2) on NOAA-10 satellite is analyzed in this paper. The non-linear effect in the linear calibration curve induces a deviation of 1.5 degrees (k) of brightness temperature in the tenth channel (8.3 um, water vapor absorption) of the HIRS/2 and the non-linear effect affects the other channels to a different extent. Based on analyzing non-linearity in two-point calibration curve, a tri-point calibration equation is given. A numerical test of effects of the linear and non-linear calibration models on the accuracy of atmospheric temperature retrievals is carried out.
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References
Lauritson, L., G. J. Nelson, and F, W. Porto (1979), NOAA Technical Memorandum NESS 107, Washington, D. C., 58pp.
Wyatt, C. L. (1978), Radiometric Calibration:Theory and Methods. Academic Press, New York, 200 pp.
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Dong, C., Liu, Q., Li, G. et al. The study of in-orbit calibration accuracy of NOAA satellite infrared sounder and its effect on temperature profile retrievals. Adv. Atmos. Sci. 7, 211–219 (1990). https://doi.org/10.1007/BF02919159
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DOI: https://doi.org/10.1007/BF02919159