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MODIS Terra and Aqua BRDF Albedo Nadir BRDF-Adjusted Reflectance Daily L3 Global 500m

The MODIS Terra and Aqua MCD43A4 Version 6.1 product provides Nadir Bidirectional Reflectance Distribution Function (BRDF)-Adjusted Reflectance (NBAR) at 500 m spatial resolution. The dataset is generated daily using 16 days of combined Terra and Aqua MODIS observations. Directional reflectance values are adjusted to remove view angle effects, resulting in a stable and consistent NBAR product. The data are temporally weighted to the ninth day of the 16-day period, which is reflected in the Julian date of the file name. The product includes NBAR reflectance for MODIS bands 1–7 along with simplified mandatory quality layers. For detailed quality information, users are advised to consult the corresponding MCD43A2 dataset.