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MODIS/Terra L2G Daytime Pointers provide the spatial relationship between each raw sensor observation and its corresponding 500-meter output grid cell. This product, designated MODPTHKM, is generated daily in near real-time and serves as critical geometric input for higher-level surface reflectance products. The data is produced by the LANCEMODIS organization for NASA's Earth Observing System.
This is an intermediate processing product (L2G) designed as input for higher-level products like Surface Reflectance, not a final geophysical dataset.