NASA - SatCORPS - GEO Calibration CERES Ed4

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CERES Edition 4 GEO Calibration

CERES Edition 4 GEO Calibration

Calibration Home  →  CERES Calibration Coefficients

SatelliteLongitudeLaunch DateStart DateEnd DateDSL RangeCNT. RespData BitE0g0g1g2C0U (%)CERES Ed4A
GOES-8 75W Apr 13, 1994 2000_04 2003_03 2194.5-3259.2 Linear 10-bit 518.28 0.7144 1.062e-04 0.0 7.0 0.38 Image
GOES-9 155E May 23, 1995 2003_05 2005_10 2915.0-3798.5 Linear 10-bit 515.68 0.5209 8.286e-05 0.0 29 0.62 Image
GOES-10 135W Apr 25, 1997 2000_04 2006_06 1086.8-3338.2 Linear 10-bit 504.29 0.5106 1.898e-04 -2.334e-08 29 0.84 Image
GOES-11 135W May 03, 2000 2006_08 2011_11 2295.5-4212.8 Linear 10-bit 497.87 0.4945 6.804e-05 0.0 29 0.51 Image
GOES-12 75W Jul 23, 2001 2003_04 2010_03 631.5-3158.2 Linear 10-bit 504.46 0.5600 1.436e-04 -1.715e-08 29 0.66 Image
GOES-13 75W May 24, 2006 2010_04 2016_12 1422.0-3859.5 Linear 10-bit 527.85 0.6248 8.046e-05 -3.499e-09 29 0.89 Image
GOES-14 75W Jun 28, 2009 2012_09 2013_06 999-999 Linear 10-bit 530.06 0.6378 4.42e-05 0.0 29 0.7 Image
GOES-15 135W Mar 4, 2010 2011_12 2016_12 652.2-2479.5 Linear 10-bit 529.74 0.6803 8.673e-05 -3.041e-09 29 1.14 Image
MET-5 63E Mar 02, 1991 2000_05 2007_01 3363.2-5799.0 Linear 8-bit 446.07 1.6662 8.990e-05 -3.099e-09 4.4 0.66 Image
MET-7 0E Sep 02, 1997 2000_04 2006_04 956.8-3147.2 Linear 8-bit 446.07 1.9156 2.123e-04 -2.195e-08 4.95 1.22 Image
MET-7 (57E) 57E Sep 02, 1997 2007_03 2016_12 3482.5-7045.8 Linear 8-bit 446.07 2.1575 6.178e-05 0.0 4.95 0.97 Image
MET-8 0E Aug 28, 2002 2004_04 2007_03 596.5-1661.2 Linear 10-bit 516.16 0.6208 9.560e-06 0.0 51 0.51 Image
MET-9 0E Dec 21, 2005 2007_04 2012_12 480.5-2552.8 Linear 10-bit 516.07 0.5461 4.602e-06 0.0 51 0.68 Image
MET-10 0E Jul 5, 2012 2013_03 2016_12 253.2-1625.0 Linear 10-bit 518.32 0.5655 1.434e-05 0.0 51 0.79 Image
GMS-5 140E Mar 17, 1995 2000_05 2003_05 1886.2-2981.0 Squared 8-bit 418.97 6.802e-03 1.670e-07 0.0 0 0.92 Image
MTSAT-1R p1 140E Feb 26, 2005 2005_07 2006_10 999-999 Linear 10-bit 437.53 0.3881 0.0005293 -6.471e-07 0 2.1% Image
MTSAT-1R p2 140E Feb 26, 2005 2006_11 2013_12 999-999 Linear 10-bit 437.53 0.4655 6.1e-06 0.0 0 1.1% Image
MTS-2 145E Feb 18, 2006 2010_07 2015_08 1609.0-3466.2 Linear 10-bit 479.33 0.4802 4.331e-05 0.0 1 0.93 Image
HIM-8 140.7E Oct 7, 2014 2015_07 2016_12 282.2-801.5 Linear 11-bit 517.21 0.2943 1.053e-05 0.0 20 0.37 Image





The Radiance (L) in units of Wm-2sr-1µm-1 is computed from the calibration gain (g) and the measured single-gain 8-bit count (C) from the ISCCP B1U 8-bit GEO-sensor datasets, the 8-bit count space count or offset (C0) and the day since launch (dsl), as shown below depending on the response of the GEO-sensor.

Radiance (L) is computed for Linear Count Response GEO-sensors as:
L = g • (C - C0), where g = g0 + g1• dsl + g2• dsl2

Radiance (L) is computed for Squared Count Response GEO-sensor GMS-5 as:
L = g • (C2 + 650.0 ), where g = g0 + g1• dsl + g2• dsl2

The Radiance (L) is converted to the Nominal or Scaled Reflectance (ρscaled) as:

ρscaled=L/E0

The Uncertainty (U %) of the GEO-calibration as given in above table is the 'Temporal Variablity' about the 'Timeline Fit' in each case (see image under the All-Sky Tropical-Ocean column). The DCC and DERM models are also referenced to the Aqua-MODIS Collection 6 Band 1 data. This Uncertainty does not include either the Aqua-MODIS Collection 6 Band 1 Absolute Uncertainty (1.6%) or the DCC and DERM Calibration Transfer Uncertainty.

The CERES project uses the ATO-RM method gains as the official CERES Ed4A calibration gains.
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