1. GERB/CERES comparisons
Lou Smith, Z. Peter Szewczyk and Pam Mlynczak
27-29 Aug. 2003
GIST-19
Cosener’s House, Abington

2. 3 CERES Campaigns in May/June 2003
CERES Terra/Aqua Comparisons
Valencia Campaign:
TOA Radiances and Ground Site
GERB Detector Comparisons
27-29 Aug. 2003
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Cosener’s House, Abington

3. Cosener’s House, Abington
Radiation data sets
27-29 Aug. 2003
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Cosener’s House, Abington

4. Cosener’s House, Abington
Overview
During May and June 2003, CERES FM-2 on TERRA was operated in Programmed Azimuth Plane in order to measure same radiances as GERB.
We show preliminary results.
Analysis is still underway.
Propose using Moon as Calibration Target.
27-29 Aug. 2003
GIST-19
Cosener’s House, Abington

5. CERES Scan Plane Rotation to Match GERB Radiance
27-29 Aug. 2003
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Cosener’s House, Abington

6. Limit of GERB Field of View
27-29 Aug. 2003
GIST-19
Cosener’s House, Abington

7. Cosener’s House, Abington
Seasonal Effects
27-29 Aug. 2003
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Cosener’s House, Abington

8. Cosener’s House, Abington
Field of View Sizes
Solid CERES
Dotted GERB
27-29 Aug. 2003
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Cosener’s House, Abington

9. Preliminary Results for GERB/CERES Comparison
27-29 Aug. 2003
GIST-19
Cosener’s House, Abington

10. Insolation at June Solstice
27-29 Aug. 2003
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Cosener’s House, Abington

11. Preliminary Results Mostly Cloudy over Ocean
27-29 Aug. 2003
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Cosener’s House, Abington

12. Cosener’s House, Abington
Histogram: SW, May
27-29 Aug. 2003
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Cosener’s House, Abington

13. Scanning of Moon by Different GERB Detectors
Due to Orbit Inclination of Moon and Earth Spin Axis, The Moon will be viewed by Different Detectors over a Period of Time
27-29 Aug. 2003
GIST-19
Cosener’s House, Abington

14. The Moon is 6.6 GERB pixels in diameter
27-29 Aug. 2003
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Cosener’s House, Abington

15. Cosener’s House, Abington
Minor Problem:
Moon is covered by 6.6 pixels.
Best time to do Lunar Calibration is during Full Moon.
12 Full Moons per Year X 6 Pixels = 72.
Would Require Minimum of 4 Years to Calibrate All 256 Detectors this Way.
OK, so how about less than best?
We only need Lunar Calibration at High Latitudes.
27-29 Aug. 2003
GIST-19
Cosener’s House, Abington

16. Cosener’s House, Abington
Summary
Preliminary Results of GERB/CERES Comparisons are Mixed.
Software being Developed for Further Analysis.
GERB/CERES Comparison Work is Ongoing.
A Campaign is Needed in December for Southern Latitudes.
High Latitude Detectors require a Different Approach, e.g. Lunar Calibration.
27-29 Aug. 2003
GIST-19
Cosener’s House, Abington