MCD43A2: MODIS/Terra and Aqua BRDF/Albedo Quality 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，简称MODIS）的双向反射分布函数（Bidirectional Reflectance Distribution Function，BRDF）/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BRDF与反照率产品（MCD43A3、MCD43A4）的模型权重参数。该模型依托16天周期内获取的多时序、经大气校正与去云处理的输入数据，可最优表征各像素因辐射散射（各向异性）引发的辐射差异的空间分布关系与参数特征。MCD43A2数据集包含MODIS陆地波段1至7的单波段质量信息与观测详情。MCD43C1至MCD43C4系列产品均包含16天的观测数据，存储于投影至0.05°（地面分辨率约5600米）经纬度气候建模网格（Climate Modeling Grid，简称CMG）的三级数据集（Level-3 data set）中。

该系列产品的生成融合了Terra与Aqua两颗卫星的观测数据，以保障输入数据具备最高的质量可靠性，并将其归类为MCD产品，即组合型（Combined）产品。

MODIS BRDF/反照率系列产品的详细信息可访问以下链接：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.