MODIS/Aqua Near Real Time (NRT) L2G Daytime Pointers, Daily 250m

The MODIS/Aqua Near Real Time (NRT) Global Observation Pointers (MYDPTQKM) files stores information about the spatial relationship between each sensor observation and output grid cell.MYDPTQKM files are used as input to higher-level products such as MODIS Surface Reflectance. Geometric information for each sensor observation is stored on a geolocated grid with Level-2 geophysical parameters stored as Level-2G gridded products. The multiple observations stored in the L2G grids are examined by the Level-3 processes to extract only the most relevant observations per grid cell.

MODIS/Aqua近实时（Near Real Time, NRT）全球观测指针（MYDPTQKM）文件存储了每一次传感器观测与输出网格单元之间的空间关联关系。MYDPTQKM文件可作为高级衍生产品的输入数据，例如MODIS地表反射率产品。每一次传感器观测的几何信息存储于地理定位网格中，而二级（Level-2）地球物理参数则以二级G（Level-2G）格网化产品的形式存储。存储于L2G格网中的多组观测数据将通过三级处理流程进行筛选，仅提取每个网格单元下最具相关性的观测数据。