MODIS/Aqua GPP: 8-Day Global Vegetation Productivity at 500m

MYD17A2H Version 6 is a decommissioned MODIS/Aqua data product providing Gross Primary Productivity (GPP) and Net Photosynthesis (PSN) estimates. It is a cumulative 8-day composite with a 500-meter pixel size, based on the radiation use efficiency concept. The product was intended for modeling terrestrial energy, carbon, water cycle processes, and vegetation biogeochemistry.

Use Cases

• Modeling terrestrial carbon fluxes based on 8-day GPP composites.
• Analyzing vegetation productivity and biogeochemistry using 500m resolution geospatial data.
• Studying the carbon cycle by integrating GPP and Net Photosynthesis (PSN) data.
• Assessing data quality for vegetation models using the included PSN Quality Control (QC) layer.

Strengths

• Provides data at a native spatial resolution of 500 meters.
• Uses updated Biome Property Look-Up Tables (BPLUT) and daily GMAO meteorological data compared to previous versions.
• Is available on multiple platforms (nasa_earthdata, datagov), indicating established use.

Limitations

• The dataset was officially decommissioned on July 31, 2023, with users directed to a newer version.
• Key metadata such as row count, column names, and specific file size are unknown across all sources.
• The 'last updated' dates conflict between sources (2023-02-25 and 2026-04-10), creating uncertainty about metadata freshness.

Provenance

Source

LPCLOUD (listed on nasa_earthdata), using data from the MODIS sensor on NASA's Aqua satellite.

Collection Method

Generated using the radiation use efficiency concept, incorporating MODIS LAI/FPAR composites and GMAO meteorological data.

Freshness

2026-04-10 00:21:59.734520

Geography

Global