MODIS/Aqua GPP Gap-Filled: 8-Day Global Vegetation Productivity

MYD17A2HGF Version 6 is a decommissioned NASA MODIS/Aqua data product providing gap-filled estimates of Gross Primary Productivity (GPP) and Net Photosynthesis (PSN). It offers cumulative 8-day composites at a 500-meter pixel resolution, generated annually using a radiation use efficiency model and interpolated inputs from LAI/FPAR data. The dataset is intended for modeling terrestrial energy, carbon, water cycles, and vegetation biogeochemistry.

Use Cases

• Modeling terrestrial carbon fluxes based on gap-filled GPP and Net Photosynthesis estimates.
• Analyzing global vegetation productivity and biogeochemistry using 500-meter resolution geospatial data.
• Studying annual trends in ecosystem function with 8-day composite time-series data.
• Inputting gap-filled productivity data into models for energy and water cycle processes.

Strengths

• Provides gap-filled data using linear interpolation for poor-quality LAI/FPAR inputs, improving data continuity.
• Uses updated Biome Property Look-Up Tables (BPLUT) and GMAO meteorological data.
• Offers a global spatial coverage at a 500-meter pixel resolution.

Limitations

• The dataset is decommissioned as of July 31, 2023, with users directed to Version 6.1.
• Data is not available in near-real-time, as it is generated only at the end of each calendar year.
• Metadata completeness is medium; specific column names and dataset size are not provided across platforms.

Provenance

Source

NASA LPCLOUD (MODIS/Aqua sensor)

Collection Method

Satellite-derived product based on the radiation use efficiency concept, using inputs from MYD15A2H LAI/FPAR data and GMAO meteorological data.

Freshness

Last updated dates conflict: one source lists 2026-04-10, another lists 2021-12-31.

Geography

Global