GOES-13 Imager Band 6 (13.3um) SRFs revisited
GOES-13 Imager Band 6 (13.3um) SRF change
During the GOES-13 post-launch tests in 2006, a cold bias, -2.4±0.6 K, in Imager channel 6 (13.3 micrometer) was reported by University of Wisconsin. The cold bias was identified via comparisons with high-spectral Atmospheric InfraRed Sounder (AIRS) data, comparisons with broad-band High-resolution Infrared Radiation Sounder (HIRS) data on NOAA-15 and NOAA-16 and a limited number of forward model comparisons. The bias is consistent with a spectral response shift on the order of 4 cm-1 to the original spectral response function used in the ground system processing.
To respond to the GOES-13 Imager channel-6 cold bias, ITT re-evaluated the spectral response functions and came out with the updates which have an effective 1-wavenumber shift (shape was also changed). New Planck Function Coefficients, or band-correction coefficients, were calculated for this band. As well as central wavenumber, and full-width half-mass (FWHM) values.
Revised - September 3, 2008.