This product has been decommissioned.
Every 16 days, the MODIS BRDF/Albedo Product (MOD43B) algorithm relies on multi-date, atmospherically corrected, cloud-cleared data and a semi-empirical kernel-driven bi-directional reflectance model to determine a global set of parameters describing the Bidirectional Reflectance Distribution Function (BRDF) of the land surface. These one-kilometer gridded ... parameters are then used to determine directional hemispherical reflectance ("black-sky albedo"), bi-hemispherical reflectance ("white-sky albedo"), and nadir BRDF-adjusted reflectance (NBAR) for seven narrow spectral bands and (in the case of albedo) three broad bands. Since the parameters of the simple kernel-based BRDF model (Ross-Thick/Li-Sparse Reciprocal) are also provided, along with extensive quality information, the MODIS BRDF/Albedo Product offers members of the global observation and modeling community the additional flexibility to derive reflectance and albedo measures particularly suited to their specific applications.
MOD43B is a MODLAND Level-3 Product and is provided globally as discrete 1200 by 1200 element tiles in a Sinusoidal Grid projection in a HDF-EOS format. MOD43B1 provides the BRDF model parameters, MOD43B2 provides an alternative set of model parameters, MOD43B3 provides the black-sky albedo (at a solar zenith angle of 45 degrees) and the white-sky albedo, and MOD43B4 provides the Nadir BRDF-Adjusted Reflectance (NBAR) value at the mean solar zenith angle of the 16-day period. Quality information is replicated and available with each product.
V004 Data Set Characteristics (decommissioned):
Area: ~10 degrees by 10 degrees lat/long
Image Dimensions:1200x1200 rows/columns
File Size: ~31MB
Resolution: 1 kilometer
Data Format: HDF-EOS
Science Data Sets (SDS HDF Layers): 2