Blackbody Calibration

DOC NOAA NESDIS


Blackbody Calibration



	Correction for GOES Imager Midnight Blackbody Calibration Error
	Description of Problem
	Calibration Correction
	Correction Algorithm
	Slide 5
	Scence Temperature Errors Predicted from Slope Errors vs Time
	Observed Scene Temperature Errors vs Time
	Observed vs Predicted Errors
	Slopes vs Time
	Uncorrected Slopes vs Time
	Corrected Slopes vs Times
	Parallel Test of Midnight Blackkbody Correction (MBCC)
	Slide 13
	Slide 14
	Conclusion

Slopes vs Time

The next two slides show all the slopes (computed once every half hour) for channel 2 (3.8 :m), detector 1, of the GOES-8 Imager plotted over seven months as a function of time.
The first slide has the original slopes, including those affected by the midnight problem. The erroneous slopes constitute the “fuzz” above the main sequence.
The second shows all the slopes with the MBCC activated. The points that were in the fuzz are now in the main sequence.

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