MODIS/Terra Net Primary Production Gap-Filled Yearly L4 Global 500m SIN Grid V006

The MOD17A3HGF Version 6 data product was decommissioned on July 31, 2023. Users are encouraged to use the MOD17A3HGF Version 6.1 data product.

The MOD17A3HGF Version 6 product provides information about annual Net Primary Production (NPP) at 500 meter (m) pixel resolution. Annual NPP is derived from the sum of all 8-day Net Photosynthesis (PSN) products (MOD17A2H) from the given year. The PSN value is the difference of the Gross Primary Productivity (GPP) and the Maintenance Respiration (MR).

The MOD17A3HGF will be generated at the end of each year when the entire yearly 8-day MOD15A2H is available. Hence, the gap-filled MOD17A3HGF is the improved MOD17, which has cleaned the poor-quality inputs from 8-day Leaf Area Index and Fraction of Photosynthetically Active Radiation (LAI/FPAR) based on the Quality Control (QC) label for every pixel. If any LAI/FPAR pixel did not meet the quality screening criteria, its value is determined through linear interpolation. However, users cannot get MOD17A3HGF in near-real time because it will be generated only at the end of a given year.

Known Issues * Operational and uncertainty issues are provided under Section 2 in the User Guide. * For complete information about known issues please refer to the MODIS/VIIRS Land Quality Assessment website.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated June 2, 2026, 15:58 (UTC)
Created June 12, 2025, 23:02 (UTC)
accessLevel public
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harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.5067/MODIS/MOD17A3HGF.006
license https://www.usa.gov/government-works
modified 2026-06-01T22:15:58Z
programCode {026:000}
publisher LP DAAC;NASA/GSFC/SED/ESD/TISL/MODAPS
resource-type Dataset
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temporal 2000-02-18/2021-12-31
theme {"Earth Science"}