MCD43A1: MODIS/Terra and Aqua BRDF/Albedo Model Parameters Daily L3 Global 500 m SIN Grid Version 6

The MODerate-resolution Imaging Spectroradiometer (MODIS) BRDF/Albedo Model Parameters product (MCD43A1) contains three-dimensional (3D) data sets providing users with weighting parameters for the models used to derive the Albedo and BRDF products (MCD43A3 and MCD43A4). The models support the spatial relationship and parameter characterization best describing the differences in radiation due to the scattering (anisotropy) of each pixel, relying on multi-date, atmospherically corrected, cloud-cleared input data measured over 16-day periods. The MCD43A2 contains individual band quality and observation information for the MODIS "land" bands 1-7. The MCD43C1 through MCD43C4 products each contain 16 days of data provided in a level-3 data set projected to a 0.05 (5,600 meters) latitude/longitude Climate Modeling Grid (CMG).

Both Terra and Aqua data are used in the generation of the products, providing the highest probability for quality input data and designating it as an MCD, meaning Combined, product.

Information on individual MODIS BRDF/Albedo Products is available at: https://lpdaac.usgs.gov/dataset_discovery/?f[0]=im_field_dataset_version%3A32&f[1]=im_field_product%3A3&f[2]=im_field_pixel_size%3A47&amp%3Bf[1]=im_field_product%3A3&amp%3Bf[2]=im_field_spatial_extent%3A50&amp%3Bf[3]=im_field_pixel_size%3A47.

中分辨率成像光谱仪（MODerate-resolution Imaging Spectroradiometer，MODIS）的双向反射分布函数（Bidirectional Reflectance Distribution Function，BRDF）与反照率模型参数产品（MCD43A1）包含三维（3D）数据集，可为用户提供用于反演反照率与BRDF产品（MCD43A3和MCD43A4）的模型权重参数。该模型支持最优描述由每个像元的散射（各向异性，anisotropy）引起的辐射差异的空间关系与参数表征，其依赖于16天周期内获取的多期、经大气校正与云剔除处理的输入数据。MCD43A2产品包含MODIS‘陆地’波段1至7的单波段质量与观测信息。MCD43C1至MCD43C4系列产品均包含16天的观测数据，以三级数据集形式存储，投影至分辨率为0.05°（5600米）的经纬度气候建模网格（Climate Modeling Grid，CMG）。
该系列产品的生成同时使用了Terra与Aqua卫星的数据，以最大化获取高质量输入数据的概率，因此将其归类为MCD产品，即组合型（Combined）产品。
有关MODIS BRDF/反照率单款产品的详细信息可访问：https://lpdaac.usgs.gov/dataset_discovery/?f[0]=im_field_dataset_version%3A32&f[1]=im_field_product%3A3&f[2]=im_field_pixel_size%3A47&amp%3Bf[1]=im_field_product%3A3&amp%3Bf[2]=im_field_spatial_extent%3A50&amp%3Bf[3]=im_field_pixel_size%3A47.