VIIRS/NPP Gross Primary Productivity and Net Photosynthesis 8-Day L4 Global 500m SIN Grid V002

Published by LP DAAC;NASA/GSFC/SED/ESD/TISL/LandSIPS | National Aeronautics and Space Administration | Metadata Last Checked: October 12, 2025 | Last Modified: 2025-09-11

The NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Gross Primary Productivity (GPP) and Net Photosynthesis (PSN) (VNP17A2) Version 2 data product is a cumulative composite of GPP values based on the radiation use efficiency concept that is potentially used as inputs to data models to calculate terrestrial energy, carbon, water cycle processes, and biogeochemistry of vegetation. VNP17A2 is an 8-day composite at 500 meter (m) spatial resolution delivered as a gridded Level 4 (L4) product in Sinusoidal projection. Provided in the VNP17A2 product are layers for GPP, PSN, along with a quality control layer. A low resolution browse image for GPP is also available for each VNP17A2 granule.Known Issues* For complete information about known issues please refer to the [MODIS/VIIRS Land Quality Assessment website](https://landweb.modaps.eosdis.nasa.gov/knownissue?sensor=VIIRS).

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Complete Metadata

bureauCode	[ "026:00" ]
identifier	10.5067/VIIRS/VNP17A2.002
landingPage	https://doi.org/10.5067/VIIRS/VNP17A2.002
programCode	[ "026:000" ]
spatial	[[{"NorthBoundingCoordinate":90,"WestBoundingCoordinate":-180,"EastBoundingCoordinate":180,"SouthBoundingCoordinate":-90}],"CARTESIAN"]
temporal	2025-01-01/2025-01-01
theme	[ "Earth Science" ]