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MODIS/Terra+Aqua BRDF/Albedo Parameter3 Band6 Daily L3 Global 30ArcSec CMG V006

The MCD43D18 Version 6 Bidirectional Reflectance Distribution Function and Albedo (BRDF/Albedo) Model Parameter data set is a daily 16-day product. This product incorporates the Climate Modeling Grid (CMG) structure in which each file geographically covers the entire earth rather than the 10 degree x 10 degree latitude and longitude tiling system utilized by the standard MODIS land products. Unlike the standard CMG pixel resolution of 5600 meters the MCD43D products are 1000 meters, consequently, because of the large file size each product contains just one layer. The Julian date in the granule ID of each specific file represents the 9th day of the 16 day composite period, and consequently the observations are weighted to estimate the BRDF/Albedo for that day. The layer in the MCD43D18 is the Bidirectional Reflectance Distribution Function geometric parameter for MODIS band 6. This geometric parameter, in conjunction with the isotropic and volumetric parameters, is used to derive the Albedo and BRDF value for MODIS band 6. The MODIS BRDF/ALBEDO products have achieved stage 3 validation.

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