NASA's MODIS/Terra sensor provides Level-2G Daytime Pointers data at 250-meter resolution in near real-time. The product, MODPTQKM, stores spatial relationships between sensor observations and output grid cells. It is produced by the LANCEMODIS organization for use as input to higher-level products like MODIS Surface Reflectance.
Use Cases
- Extract the most relevant sensor observation per grid cell for Level-3 processing using the stored multiple observations.
- Align Level-2 geophysical parameters with their precise geometric information using the co-located L2G grids.
- Generate MODIS Surface Reflectance products by utilizing the spatial pointer information from MODPTQKM files.
Strengths
- Provides 250-meter spatial resolution for detailed analysis.
- Delivered in near real-time (NRT) for timely applications.
Limitations
- Specific row count, column details, and temporal coverage are unknown.
- Data utility is dependent on availability of the corresponding Level-2 geophysical products.
Provenance
- Source
- NASA Earthdata (LANCEMODIS).
- Collection Method
- Data collected by the MODIS instrument aboard the Terra satellite and processed to Level-2G.
- Time Range
- null
- Freshness
- Daily near real-time.
- Geography
- Global coverage from the Terra satellite's orbit.