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MODIS Terra+Aqua BRDF/Albedo 0.05Deg CMG QA Science Data Sets
The table below lists the four Science Data Sets representing Quality in the BRDF/Albedo CMG products, with applicable QC bit legends.
Note 1: Percent_Snow is not present in “MCD43C2 BRDF/Albedo Snow-free Quality”, as the value would be definition of the product always be 0.
Note 2: Local_Solar_Noon, Percent_Inputs, and Percent_Snow do not utilize their full 0 - 254 range (see below).
This information is excerpted from the file specifications for V005 MCD43Cs found at ftp://modular.nascom.nasa.gov/pub/LatestFilespecs/collection5/.
| Bit Comb. | BRDF_Albedo_Quality |
| 0 | best quality, 75% or more with best full inversions |
| 1 | good quality, 75% or more with full inversions |
| 2 | mixed, 75% or less full inversions and 25% or less fill values |
| 3 | all magnitude inversions or 50% or less fill values |
| 4 | 50% or more fill values |
| 255 | FillValue |
| Local_Solar_Noon | |
| 0-254 | Zenith Angle at local solar noon (0 - 90 degrees) |
| 255 | FillValue |
| Percent_Inputs | |
| 0-254 | Percent of the processed finer resolution data which contributed to this CMG pixel (0 - 100%) |
| 255 | FillValue |
| Percent_Snow | |
| 0-254 | Percent of underlying data flagged as snow (0 - 100%) |
| 255 | FillValue |
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