Calibration Coefficients GMS-4
GMS-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 -------- ----- ------ ------- ------ ----- ----- ------- ------- ------- -------- 19891231 0.892 -0.005 0.012 0.020 0.820 0.997 1.000 1.100 190.000 298.000 19900131 0.884 -0.001 0.015 0.020 0.810 1.006 -1.100 1.300 190.500 294.500 19900228 0.926 -0.006 0.012 0.020 0.810 1.004 -0.530 ------ ------- ------- 19900331 0.946 -0.004 0.017 0.020 0.810 1.001 0.030 ------ ------- ------- 19900430 0.990 -0.002 0.015 0.020 0.780 0.999 0.600 1.000 194.000 298.000 19900531 0.981 0.000 ------ ----- ----- 0.998 1.170 ------ ------- ------- 19900630 0.972 0.003 ------ ----- ----- 0.998 1.730 ------ ------- ------- 19900731 0.963 0.005 0.016 0.020 0.760 0.997 2.300 0.800 194.500 296.000 19900831 0.997 0.004 ------ ----- ----- 0.998 1.700 ------ ------- ------- 19900930 1.031 0.002 ------ ----- ----- 0.999 1.100 ------ ------- ------- 19901031 1.065 0.001 0.012 0.020 0.810 1.000 0.500 1.300 193.500 296.500 19901130 1.070 0.000 ------ ----- ----- 0.997 1.150 ------ ------- ------- 19901231 1.075 0.000 ------ ----- ----- 0.994 1.800 1.000 196.500 297.500 19910131 1.080 -0.001 0.014 0.020 0.840 0.991 2.600 1.000 196.000 297.500 19910228 1.088 -0.001 ------ ----- ----- 0.993 2.270 ------ ------- ------- 19910331 1.095 -0.002 ------ ----- ----- 0.995 1.930 ------ ------- ------- 19910430 1.103 -0.002 0.015 0.020 0.820 0.997 1.600 1.000 192.500 296.000 19910531 1.102 -0.020 ------ ----- ----- 1.000 1.200 ------ ------- ------- 19910630 1.101 -0.001 ------ ----- ----- 1.002 0.800 ------ ------- ------- 19910715 1.100 -0.001 0.020 0.040 0.790 1.005 0.400 1.100 195.500 294.000 19910731 1.276 -0.022 ------ ----- ----- 1.005 0.400 1.100 195.500 294.000 19910831 1.253 -0.015 ------ ----- ----- 1.001 1.030 ------ ------- ------- 19910930 1.229 -0.009 ------ ----- ----- 0.998 1.670 ------ ------- ------- 19911031 1.206 -0.002 0.019 0.040 0.820 0.994 2.300 1.000 192.000 295.500 19911130 1.194 -0.003 ------ ----- ----- 0.998 0.970 ------ ------- ------- 19911231 1.182 -0.004 ------ ----- ----- 1.003 -0.370 ------ ------- ------- 19920131 1.170 -0.005 0.010 0.040 0.830 1.007 -1.700 0.800 188.000 296.500 19920229 1.188 -0.004 ------ ----- ----- 1.004 -0.970 ------ ------- ------- 19920331 1.206 -0.002 ------ ----- ----- 1.002 -0.230 ------ ------- ------- 19920430 1.224 -0.001 0.013 0.030 0.750 0.999 0.500 0.900 198.500 298.500 19920531 1.231 -0.001 ------ ----- ----- 1.000 0.500 ------ ------- ------- 19920630 1.238 -0.001 ------ ----- ----- 1.002 0.500 ------ ------- ------- 19920731 1.245 -0.001 0.016 0.030 0.750 1.003 0.500 0.900 194.000 295.500 19920831 1.304 -0.004 ------ ----- ----- 1.005 -0.230 ------ ------- ------- 19920930 1.364 -0.006 ------ ----- ----- 1.006 -0.970 ------ ------- ------- 19921031 1.423 -0.009 0.012 0.030 0.770 1.008 -1.700 1.000 197.000 298.000 19921130 1.392 -0.008 ------ ----- ----- 1.005 -0.530 ------ ------- ------- 19921231 1.362 -0.008 ------ ----- ----- 1.002 0.630 ------ ------- ------- 19930131 1.331 -0.007 0.012 0.030 0.780 0.999 1.800 0.900 198.000 297.000 19930228 1.356 -0.008 ------ ----- ----- 1.000 1.370 ------ ------- ------- 19930331 1.380 -0.009 ------ ----- ----- 1.001 0.930 ------ ------- ------- 19930430 1.405 -0.010 0.009 0.030 0.750 1.002 0.500 0.900 197.500 296.500 19930531 1.410 -0.011 ------ ----- ----- 1.003 0.570 ------ ------- ------- 19930630 1.415 -0.012 ------ ----- ----- 1.003 0.630 ------ ------- ------- 19930731 1.420 -0.013 0.008 0.020 0.680 1.004 0.700 0.800 198.000 297.500 19930831 1.433 -0.014 ------ ----- ----- 1.007 -0.330 ------ ------- ------- 19930930 1.445 -0.014 ------ ----- ----- 1.009 -1.370 ------ ------- ------- 19931031 1.458 -0.015 0.002 0.040 0.690 1.012 -2.400 1.000 192.500 297.500 19931130 1.455 -0.014 ------ ----- ----- 1.015 -3.270 ------ ------- ------- 19931231 1.453 -0.013 ------ ----- ----- 1.019 -4.130 ------ ------- ------- 19940131 1.450 -0.012 0.009 0.030 0.700 1.022 -5.000 1.100 192.000 298.500 19940228 1.451 -0.011 ------ ----- ----- 1.019 -4.200 ------ ------- ------- 19940331 1.453 -0.010 ------ ----- ----- 1.017 -3.400 ------ ------- ------- 19940430 1.454 -0.009 0.013 0.030 0.640 1.014 -2.600 1.100 190.000 297.000 19940531 1.459 -0.009 ------ ----- ----- 1.009 -1.170 ------ ------- ------- 19940630 1.464 -0.009 ------ ----- ----- 1.005 0.270 ------ ------- ------- 19940731 1.469 -0.009 0.016 0.030 0.640 1.000 1.700 0.700 209.500 297.000 19940831 1.469 -0.009 ------ ----- ----- 1.014 -3.170 0.840 201.500 297.000 19940930 1.529 -0.014 ------ ----- ----- 1.024 -6.940 ------ ------- ------- 19941031 1.538 -0.010 ------ ----- ----- 1.006 -2.420 ------ ------- ------- 19941130 1.547 -0.006 ------ ----- ----- 1.010 -3.440 ------ ------- ------- 19941231 1.556 -0.003 ------ ----- ----- 1.014 -4.470 ------ ------- ------- 19950131 1.564 0.001 ------ ----- ----- 1.018 -5.490 ------ ------- ------- 19950228 1.498 0.008 0.022 0.030 0.880 1.006 -2.160 0.870 206.500 300.000 19950331 1.508 0.006 ------ ----- ----- 1.008 -2.570 ------ ------- ------- 19950430 1.517 0.003 0.032 0.030 0.910 1.011 -2.980 0.940 1.980 298.500 19950531 1.587 -0.003 0.020 0.030 0.850 1.016 -3.730 0.770 200.500 297.500 19950630 1.587 -0.003 ------ ----- ----- 1.016 -3.730 ------ ------- ------- -------------------------------------------------------------------------------------
GMS-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 19891231 1.073 -0.003 1.064 -18.433 19900131 1.063 0.002 1.073 -20.674 19900228 1.111 -0.004 1.071 -20.066 19900331 1.134 -0.002 1.068 -19.468 19900430 1.185 0.001 1.066 -18.860 19900531 1.172 0.003 1.065 -18.252 19900630 1.161 0.007 1.065 -17.654 19900731 1.147 0.009 1.064 -17.046 19900831 1.185 0.008 1.065 -17.686 19900930 1.225 0.005 1.066 -18.326 19901031 1.263 0.004 1.067 -18.966 19901130 1.268 0.003 1.064 -18.273 19901231 1.272 0.003 1.061 -17.579 19910131 1.275 0.002 1.057 -16.726 19910228 1.284 0.002 1.060 -17.078 19910331 1.290 0.001 1.062 -17.441 19910430 1.298 0.001 1.064 -17.793 19910531 1.295 0.010 1.067 -18.220 19910630 1.291 0.002 1.069 -18.646 19910715 1.289 0.002 1.072 -19.073 19910731 1.495 -0.023 1.072 -19.073 19910831 1.466 -0.015 1.068 -18.401 19910930 1.437 -0.008 1.065 -17.718 19911031 1.407 0.001 1.061 -17.046 19911130 1.391 -0.000 1.065 -18.465 19911231 1.376 -0.002 1.070 -19.895 19920131 1.360 -0.003 1.074 -21.314 19920229 1.379 -0.002 1.071 -20.535 19920331 1.398 0.001 1.069 -19.745 19920430 1.416 0.002 1.066 -18.966 19920531 1.422 0.002 1.067 -18.966 19920630 1.427 0.002 1.069 -18.966 19920731 1.434 0.002 1.070 -18.966 19920831 1.500 -0.002 1.072 -19.745 19920930 1.567 -0.004 1.073 -20.535 19921031 1.632 -0.007 1.076 -21.314 19921130 1.594 -0.006 1.072 -20.066 19921231 1.558 -0.006 1.069 -18.828 19930131 1.520 -0.005 1.066 -17.579 19930228 1.547 -0.006 1.067 -18.038 19930331 1.572 -0.007 1.068 -18.508 19930430 1.599 -0.008 1.069 -18.966 19930531 1.602 -0.009 1.070 -18.892 19930630 1.606 -0.011 1.070 -18.828 19930731 1.609 -0.012 1.071 -18.753 19930831 1.622 -0.013 1.074 -19.852 19930930 1.633 -0.013 1.077 -20.962 19931031 1.645 -0.004 1.080 -22.061 19931130 1.640 -0.003 1.083 -22.989 19931231 1.635 -0.012 1.087 -23.907 19940131 1.727 -0.011 1.090 -24.835 19940228 1.735 -0.010 1.087 -23.981 19940331 1.745 -0.009 1.085 -23.128 19940430 1.751 -0.008 1.082 -22.274 19940531 1.765 -0.008 1.077 -20.748 19940630 1.777 -0.008 1.072 -19.212 19940731 1.791 -0.008 1.067 -17.686 19940831 1.829 -0.008 1.082 -22.882 19940930 1.783 -0.004 1.093 -26.905 19941031 1.744 0.012 1.073 -22.082 19941130 1.747 0.016 1.078 -23.170 19941231 1.708 -0.000 1.082 -24.269 19950131 1.666 0.004 1.005 -1.729 19950228 1.594 0.009 0.993 1.558 19950331 1.608 0.006 0.995 1.153 19950430 1.620 0.003 0.998 0.749 19950531 1.698 -0.003 1.003 0.008 19950630 1.701 -0.003 1.003 0.008 --------------------------------------
ISCCP Calibration Coefficients
