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CERES Calibration
CERES Calibration
Calibration Home → CERES Calibration Coefficients
Satellite | Longitude | Launch Date | CNT. Resp | DSL Range | E0 | g0 | g1 | g2 | C0 | U (%) | DCC+Desert+LaRC | Space CNT. | Data Src. | Data Bit |
GOES-5 |
75W |
May 22, 1981 |
Squared |
86-1151 |
531.7 |
-0.0007e-4 |
0.00884 |
0.0 |
22 |
2.17 |
Image |
Image |
NOA |
8-bit |
GOES-6 |
108W |
Apr 28, 1983 |
Squared |
000-000 |
531.11 |
0.0042e-4 |
0.00952 |
0.0 |
25.0 |
7.74 |
Image |
Image |
CSU |
8-bit |
GOES-7 |
98W/135W |
Feb 26, 1987 |
Squared |
718-2757 |
520.8 |
0.0116e-4 |
0.00990 |
0.0 |
2.0 |
4.42 |
Image |
Image |
AES |
8-bit |
GOES-7 |
98W/135W |
Feb 26, 1987 |
Squared |
718-2757 |
520.8 |
0.0002e-4 |
0.01479 |
0.0 |
6.0 |
1.84 |
Image |
Image |
CSU |
8-bit |
GOES-7 |
98W/135W |
Feb 26, 1987 |
Squared |
718-2757 |
520.8 |
0.0154e-4 |
0.00933 |
0.0 |
6.0 |
2.50 |
Image |
Image |
NOA |
8-bit |
GMS-2A |
140E |
Aug 11, 1981 |
Squared |
704-888 |
530.84 |
0.0309e-4 |
0.0092 |
0.0 |
2.7 |
1.32 |
Image |
Image |
JMA |
8-bit |
GMS-2B |
140E |
Aug 11, 1981 |
Squared |
1070-1131 |
530.84 |
-0.0277e-4 |
0.01173 |
0.0 |
2.7 |
0.87 |
Image |
Image |
JMA |
8-bit |
GMS-3 |
140E |
Aug 03, 1984 |
Squared |
43-1960 |
516.1 |
0.0122e-4 |
0.0092 |
0.0 |
8.0 |
2.11 |
Image |
Image |
JMA |
8-bit |
GMS-4 |
140E |
Sep 05, 1989 |
Squared |
133-2109 |
532.39 |
0.0185e-4 |
0.0101 |
0.0 |
5.0 |
2.79 |
Image |
Image |
JMA |
8-bit |
GMS-5 |
140E |
Mar 17, 1995 |
Squared |
89-2981 |
418.97 |
0.0021e-4 |
0.0066 |
0.0 |
0.0 |
0.84 |
Image |
Image |
JMA |
8-bit |
MET-2A |
0 |
Jun 19, 1981 |
Linear |
576-2126 |
414.85 |
0.5672e-4 |
1.8337 |
0.0 |
4.0 |
0.80 |
Image |
Image |
EUM |
8-bit |
MET-2B |
0 |
Jun 19, 1981 |
Linear |
2157-2615 |
414.85 |
-0.0535e-4 |
1.6308 |
0.0 |
4.0 |
0.61 |
Image |
Image |
EUM |
8-bit |
MET-3A |
0 |
Jun 15, 1988 |
Linear |
62-364 |
427.85 |
0.8396e-4 |
1.5601 |
0.0 |
4.0 |
0.87 |
Image |
Image |
ESA |
8-bit |
MET-3B |
50W |
Jun 15, 1988 |
Linear |
579-944 |
427.85 |
1.5455e-4 |
1.8480 |
0.0 |
4.0 |
1.07 |
Image |
Image |
ESA |
8-bit |
MET-4 |
0 |
Mar 6, 1989 |
Linear |
101-1806 |
442.03 |
1.2703e-4 |
1.7809 |
0.0 |
4.0 |
0.55 |
Image |
Image |
ESA |
8-bit |
MET-5A |
0 |
Mar 02, 1991 |
Linear |
1079-2175 |
467.94 |
0.4983e-4 |
1.7604 |
0.0 |
4.0 |
0.55 |
Image |
Image |
ESA |
8-bit |
MET-5B |
63E |
Mar 02, 1991 |
Linear |
3332-5767 |
467.94 |
0.6694e-4 |
1.7319 |
0.0 |
4.0 |
0.57 |
Image |
Image |
EUM |
8-bit |
MET-6 |
0 |
Nov 20, 1993 |
Linear |
1182-1638 |
468.93 |
0.0331e-4 |
1.8983 |
0.0 |
4.0 |
0.67 |
Image |
Image |
ESA |
8-bit |
MET-7 |
0/57E |
Sep 02, 1997 |
Linear |
560-5431 |
446.07 |
1.2670e-4 |
1.9575 |
0.0 |
4.5 |
0.90 |
Image |
Image |
EUM |
8-bit |
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 (C
0) 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-sensors as:
L = g • (C2 - (C0)2), where g = g0 + g1• dsl + g2• dsl2 The Radiance (L) is converted to the Nominal or Scaled Reflectance (ρ
scaled) 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 DCC+Desert+LaRC column). The DCC and DESERT 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 DESERT Calibration Transfer Uncertainty.
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