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Calibration Coefficients METEOSAT-4

METEOSAT-4: Normalized coefficients for VIS scaled radiances (0 to 1) and IR brightness temperatures in Kelvins. The Normalized coefficients result from comparison to the reference AVHRR for that time period. (NOAA-7: July 1983 - January 1985, NOAA-9: February 1985 - October 1988, NOAA-11: November 1988 - August 1994, NOAA-14: January 1995 - September 2001, NOAA-16: October 2001 - December 2005, NOAA-18: January 2006 - present)

-------------------------------------------------------------------------------------
  DATE            VISIBLE (fraction)                    INFRARED (Kelvin)
--------  ----------------------------------  ---------------------------------------
YYYYMMDD  Slope   Intc    rms    min    max   Slope   Intc    rms     min      max
--------  -----  ------ ------- ------ -----  ----- ------- -------  ------- --------

19890731  0.870  -0.015  0.009  0.030  0.780  1.023  -5.780   1.200  200.000  295.500
19890831  0.892  -0.017 ------  -----  -----  1.023  -5.370  ------  -------  -------
19890930  0.913  -0.018 ------  -----  -----  1.022  -4.970  ------  -------  -------
19891031  0.935  -0.020  0.013  0.020  0.780  1.022  -4.560   1.000  206.500  294.500
19891130  0.917  -0.018 ------  -----  -----  1.022  -4.810  ------  -------  -------
19891231  0.899  -0.016 ------  -----  -----  1.023  -5.070  ------  -------  -------
19900131  0.881  -0.014  0.012  0.030  0.800  1.023  -5.320   0.910  199.500  295.500
19900430  0.923  -0.017  0.010  0.020  0.810  1.024  -5.430   1.250  186.500  296.500
19900531  0.923  -0.017  0.010  0.020  0.810  1.024  -5.430   1.250  186.500  296.500
19900630  0.916  -0.018 ------  -----  -----  1.010  -2.270   1.150  208.000  295.000
19900731  0.910  -0.020  0.011  0.030  0.660  1.001   0.790   0.860  225.500  294.000
19900831  0.940  -0.021 ------  -----  -----  1.005  -0.350  ------  -------  -------
19900930  0.970  -0.021 ------  -----  -----  1.009  -1.500  ------  -------  -------
19901031  1.000  -0.022  0.012  0.030  0.870  1.013  -2.640   0.940  200.000  294.500
19901130  0.990  -0.018 ------  -----  -----  1.014  -3.260  ------  -------  -------
19901231  0.980  -0.014 ------  -----  -----  1.015  -3.870  ------  -------  -------
19910131  0.970  -0.010  0.012  0.030  0.830  1.005  -0.820   0.890  205.500  297.000
19910228  0.978  -0.013 ------  -----  -----  1.011  -2.350  ------  -------  -------
19910331  0.986  -0.016 ------  -----  -----  1.016  -3.870  ------  -------  -------
19910430  0.994  -0.019  0.008  0.030  0.820  1.022  -5.400   1.190  186.000  296.000
19910531  0.980  -0.018 ------  -----  -----  1.016  -4.010  ------  -------  -------
19910630  0.967  -0.018 ------  -----  -----  1.011  -2.610  ------  -------  -------
19910731  0.953  -0.017  0.006  0.040  0.710  1.005  -1.220   0.540  218.500  294.500
19910831  0.981  -0.018 ------  -----  -----  1.010  -2.550  ------  -------  -------
19910930  1.008  -0.019 ------  -----  -----  1.015  -3.890  ------  -------  -------
19911031  1.036  -0.020  0.007  0.050  0.710  1.020  -5.220   0.690  214.500  296.000
19911130  1.020  -0.017 ------  -----  -----  1.022  -5.790  ------  -------  -------
19911231  1.004  -0.015 ------  -----  -----  1.023  -6.360  ------  -------  -------
19920131  0.988  -0.012  0.006  0.060  0.830  1.025  -6.930   1.020  189.500  296.000
19920229  1.001  -0.015 ------  -----  -----  1.022  -5.840  ------  -------  -------
19920331  1.014  -0.018 ------  -----  -----  1.018  -4.740  ------  -------  -------
19920430  1.027  -0.021  0.008  0.040  0.760  1.015  -3.650   0.840  205.500  294.500
19920531  1.019  -0.022 ------  -----  -----  1.009  -1.960  ------  -------  -------
19920630  1.012  -0.024 ------  -----  -----  1.002  -0.270  ------  -------  -------
19920731  1.004  -0.025  0.007  0.050  0.580  0.996   1.420   0.760  213.500  293.500
19920831  1.000  -0.023 ------  -----  -----  0.997   1.530  ------  -------  -------
19920930  0.977  -0.021  0.006  0.050  0.370  0.998   1.640   0.460  267.500  293.500
19921031  1.056  -0.027  0.007  0.040  0.690  1.026  -6.900   0.700  203.000  295.000
19921130  1.048  -0.025 ------  -----  -----  1.013  -3.260  ------  -------  -------
19921231  1.041  -0.022 ------  -----  -----  1.000   0.390  ------  -------  -------
19930131  1.033  -0.020  0.006  0.030  0.560  0.987   4.030   0.580  269.000  296.500
19930228  1.039  -0.024 ------  -----  -----  1.006  -1.270  ------  -------  -------
19930331  1.044  -0.027 ------  -----  -----  1.026  -6.570  ------  -------  -------
19930430  1.050  -0.031  0.008  0.030  0.730  1.045 -11.870   1.220  192.500  296.500
19930531  1.033  -0.033 ------  -----  -----  1.029  -7.410  ------  -------  -------
19930630  1.016  -0.035 ------  -----  -----  1.012  -2.960  ------  -------  -------
19930731  0.999  -0.037  0.009  0.040  0.550  0.996   1.500   0.500  219.500  294.500
19930831  1.021  -0.038 ------  -----  -----  1.010  -2.330  ------  -------  -------
19930930  1.044  -0.039 ------  -----  -----  1.025  -6.170  ------  -------  -------
19931031  1.066  -0.040  0.010  0.040  0.700  1.039 -10.000   0.800  192.000  295.000
19931130  1.040  -0.036 ------  -----  -----  1.030  -7.330  ------  -------  -------
19931231  1.015  -0.031 ------  -----  -----  1.021  -4.670  ------  -------  -------
19940131  0.989  -0.027  0.009  0.040  0.410  1.012  -2.000   0.600  217.000  296.500
-------------------------------------------------------------------------------------

METEOSAT-4: Absolute coefficients for VIS scaled radiances (0 to 1) and IR brightness temperatures in Kelvins. The Absolute coefficients combine all ISCCP calibration adjustments, including the aircraft calibration, to produce the final Absolute tables in the BT dataset.

--------------------------------------
  DATE       VISIBLE       INFRARED
--------  -------------  -------------
YYYYMMDD  Slope   Intc   Slope   Intc

19890731  1.054  -0.015  1.092 -25.667
19890831  1.079  -0.018  1.092 -25.230
19890930  1.103  -0.019  1.090 -24.803
19891031  1.129  -0.021  1.090 -24.366
19891130  1.105  -0.019  1.090 -24.632
19891231  1.081  -0.016  1.092 -24.910
19900131  1.059  -0.014  1.092 -25.176
19900430  1.105  -0.017  1.093 -25.294
19900531  1.103  -0.017  1.093 -25.294
19900630  1.094  -0.018  1.078 -21.922
19900731  1.084  -0.021  1.068 -18.657
19900831  1.118  -0.022  1.072 -19.873
19900930  1.152  -0.022  1.077 -21.101
19901031  1.186  -0.023  1.081 -22.317
19901130  1.173  -0.018  1.082 -22.978
19901231  1.159  -0.014  1.083 -23.629
19910131  1.146  -0.009  1.072 -20.375
19910228  1.154  -0.012  1.079 -22.007
19910331  1.162  -0.016  1.084 -23.629
19910430  1.170  -0.019  1.090 -25.262
19910531  1.151  -0.018  1.084 -23.779
19910630  1.134  -0.018  1.079 -22.285
19910731  1.117  -0.017  1.072 -20.802
19910831  1.148  -0.018  1.078 -22.221
19910930  1.178  -0.019  1.083 -23.651
19911031  1.209  -0.020  1.088 -25.070
19911130  1.188  -0.017  1.090 -25.678
19911231  1.169  -0.014  1.092 -26.286
19920131  1.148  -0.011  1.094 -26.894
19920229  1.162  -0.014  1.090 -25.731
19920331  1.175  -0.018  1.086 -24.558
19920430  1.188  -0.021  1.083 -23.395
19920531  1.177  -0.022  1.077 -21.591
19920630  1.167  -0.025  1.069 -19.788
19920731  1.157  -0.026  1.063 -17.985
19920831  1.150  -0.023  1.064 -17.867
19920930  1.123  -0.021  1.065 -17.750
19921031  1.211  -0.028  1.095 -26.862
19921130  1.200  -0.026  1.081 -22.978
19921231  1.191  -0.022  1.067 -19.084
19930131  1.180  -0.020  1.053 -15.200
19930228  1.185  -0.024  1.073 -20.855
19930331  1.189  -0.028  1.095 -26.510
19930430  1.195  -0.032  1.115 -32.165
19930531  1.173  -0.024  1.098 -27.406
19930630  1.153  -0.017  1.080 -22.658
19930731  1.132  -0.019  1.063 -17.899
19930831  1.156  -0.020  1.078 -21.986
19930930  1.180  -0.021  1.094 -26.083
19931031  1.202  -0.022  1.109 -30.170
19931130  1.172  -0.008  1.099 -27.321
19931231  1.142  -0.012  1.089 -24.483
19940131  1.178  -0.007  1.080 -21.634
--------------------------------------

ISCCP Calibration Coefficients