VJ117A2GF: Gap-Filled Global Vegetation Productivity at 500m

NOAA-20 VIIRS gap-filled data provides cumulative 8-day composites of Gross Primary Productivity and Net Photosynthesis at 500-meter resolution. This Level 4 product uses linear interpolation to clean poor-quality inputs from Leaf Area Index and Fraction of Photosynthetically Active Radiation data. It is generated annually, not in near-real-time, for modeling terrestrial energy, carbon, and water cycles.

Use Cases

• Modeling terrestrial carbon cycle processes based on gap-filled Gross Primary Productivity layers.
• Analyzing global vegetation biogeochemistry using 8-day Net Photosynthesis composites.
• Studying energy and water cycle processes with quality-controlled, 500m resolution satellite data.
• Inputting cleaned Leaf Area Index and Fraction of Photosynthetically Active Radiation values into land surface models.

Strengths

• Provides gap-filled data using linear interpolation for poor-quality pixels, improving on the base VJ117A2 product.
• Offers a consistent 500-meter spatial resolution in a Sinusoidal projection for global analysis.
• Is a Level 4 (L4) gridded product, indicating derived geophysical variables.

Limitations

• Data is not available in near-real-time; it is generated only at the end of each calendar year.
• Metadata for specific column names, row counts, and file sizes is not provided across platforms.
• Known issues exist and require users to consult an external website for complete information.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Satellite remote sensing from the NOAA-20 Visible Infrared Imaging Radiometer Suite (VIIRS), processed into a cumulative composite.

Freshness

2026-04-09 20:47:49.381807

Geography

Global, delivered in a Sinusoidal projection.