VIIRS/NPP BRDF/Albedo Parameter 3 Band M10 Daily L3 Global 30 ArcSec CMG V002

The NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Bidirectional Reflectance Distribution Function (BRDF) and Albedo Model Parameter 3 Band M10 product (VNP43D24) is produced daily using 16 days of data at 30 arc second (1,000 meter) resolution. Data are temporally weighted to the ninth day, which is reflected in the file name. The VNP43D product suite is provided in a Climate Modeling Grid (CMG), which covers the entire globe for use in climate simulation models. Due to the large file size, each VNP43D product contains just one data layer. Each of the three model parameters (isotropic, volumetric, and geometric) for each of the nine VIIRS moderate resolution bands along with the visible, near-infrared (NIR), and shortwave bands included in the [VNP43MA1](https://doi.org/10.5067/VIIRS/VNP43MA1.002) product is stored in a separate file as VNP43D01 through VNP43D36. In addition to the bands included in VNP43MA1, this product suite includes model parameters for the VIIRS Day/Night Band (DNB) as VNP43D37 through VNP43D39. Details regarding methodology are available on the [VNP43MA1](https://doi.org/10.5067/VIIRS/VNP43MA1.002) product page and in the Algorithm Theoretical Basis Document (ATBD).

VNP43D24 is the BRDF geometric parameter for VIIRS band M10 (1.61 μm). The geometric parameter, in conjunction with the isotropic and volumetric parameters, is used to derive the BRDF/Albedo values for VIIRS band M10.

Known Issues
* For complete information about known issues please refer to the [MODIS/VIIRS Land Quality Assessment website](https://landweb.modaps.eosdis.nasa.gov/knownissue).

NASA/NOAA苏米国家极轨合作项目（Suomi National Polar-orbiting Partnership, Suomi NPP）可见光红外成像辐射计套件（Visible Infrared Imaging Radiometer Suite, VIIRS）双向反射分布函数（Bidirectional Reflectance Distribution Function, BRDF）与反照率模型参数3波段M10产品（VNP43D24）每日生产，采用16天的观测数据集，分辨率为30角秒（约1000米）。数据将以第9天为中心进行时间加权，该加权信息会体现在文件名中。VNP43D产品系列采用气候建模网格（Climate Modeling Grid, CMG）格式，覆盖全球范围，可用于气候模拟模型。由于文件体积较大，每个VNP43D产品仅包含单一数据层。9个VIIRS中分辨率波段的三类模型参数（各向同性（isotropic）、体散射（volumetric）与几何散射（geometric）），以及[VNP43MA1](https://doi.org/10.5067/VIIRS/VNP43MA1.002)产品中包含的可见光、近红外（Near-Infrared, NIR）和短波波段，分别以VNP43D01至VNP43D36的独立文件存储。除VNP43MA1涵盖的波段外，该产品系列还为VIIRS夜间可见波段（Day/Night Band, DNB）提供模型参数，对应文件为VNP43D37至VNP43D39。相关方法学细节可参阅[VNP43MA1](https://doi.org/10.5067/VIIRS/VNP43MA1.002)产品页面以及算法理论基础文档（Algorithm Theoretical Basis Document, ATBD）。

VNP43D24对应VIIRS M10波段（1.61 μm）的BRDF几何散射参数。该几何参数与各向同性、体散射参数结合，可用于推导VIIRS M10波段的BRDF/反照率数值。

已知问题
* 如需获取完整的已知问题信息，请参阅[MODIS/VIIRS陆地质量评估网站](https://landweb.modaps.eosdis.nasa.gov/knownissue)