Root causes analysis of the discrepancy in AOD Between GOES-EAST and WEST
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Root causes analysis of the discrepancy in AOD Between GOES-EAST and WEST. Root Causes. 1. Calibration difference shouldn’t have diurnal dependency 2. Cloud detection difference 3. Surface reflectance 4. viewing geometry

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Root causes
Root Causes GOES-EAST and WEST

  • 1. Calibration difference

    shouldn’t have diurnal dependency

  • 2. Cloud detection difference

  • 3. Surface reflectance

  • 4. viewing geometry

  • Sensitivity to AOD is reduced considerably when higher surface reflectance is combined with backward scattered direction, i.e., AM for EAST and PM for WEST

    eastwest


6.2 (72) GOES-EAST and WEST

7.2 (61)

5.7 LST (sza=78)

9.2(38)

10.2(28)

12.2 (17)

13.2 (23)

15.7(50)

15.2 (44)

Surface reflectance, RAZ=RAZ


6.2 (72) GOES-EAST and WEST

7.2 (61)

5.7 LST (sza=78)

9.2(38)

10.2(28)

12.2 (17)

13.2 (23)

15.2 (44)

15.7(50)

AOD , RAZ=RAZ



Scattering angle~46 105W)

Scattering angle~111


Surface=0.05 105W)

GOES Ch1 TOA reflectance


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