VIIRS/NPP Vegetation Indices 16-Day L3 Global 1km SIN Grid V001

The NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Vegetation Indices (VNP13A2) Version 1 data product provides vegetation indices by a process of selecting the best available pixel over a 16-day acquisition period at 1 kilometer (km) resolution. The VNP13 data products are designed after the Moderate Resolution Imaging Spectroradiometer (MODIS) Terra and Aqua Vegetation Indices product suite to promote the continuity of the Earth Observation System (EOS) mission.

The VNP13 algorithm process produces three vegetation indices: The Normalized Difference Vegetation Index (NDVI), the Enhanced Vegetation Index (EVI), and the Enhanced Vegetation Index-2 (EVI2). NDVI is one of the longest continual remotely sensed time series observations, using both the red and near-infrared (NIR) bands. EVI is a slightly different vegetation index that is more sensitive to canopy cover, while NDVI is more sensitive to chlorophyll. EVI2 is a reformation of the standard 3-band EVI, using the red band and NIR band. This reformation addresses arising issues when comparing VIIRS EVI to other EVI models that do not include a blue band. EVI2 will eventually become the standard EVI.

Along with the three Vegetation Indices layers, this product also includes layers for NIR reflectance; three shortwave infrared (SWIR) reflectance; red, blue, and green reflectance; composite day of year; pixel reliability; relative azimuth, view, and sun angles, and a quality layer. Two low resolution browse images are also available for each VNP13A2 product: EVI and NDVI.

Data and Resources

Additional Info

Field Value
Maintainer Kamel Didan
Last Updated July 17, 2025, 16:27 (UTC)
Created April 23, 2025, 22:54 (UTC)
accessLevel public
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citation Kamel Didan, Armando Barreto . 2018-07-19. VNP13A2. Version 001. VIIRS/NPP Vegetation Indices 16-Day L3 Global 1km SIN Grid V001 . Sioux Falls, South Dakota, USA. Archived by National Aeronautics and Space Administration, U.S. Government, NASA EOSDIS Land Processes Distributed Active Archive Center. https://doi.org/10.5067/VIIRS/VNP13A2.001. https://doi.org/10.5067/VIIRS/VNP13A2.001. Digital Science Data. This data set was provided by the NASA/NOAA NPP Project. The DOI landing page provides citations in APA and Chicago styles. .
creator Kamel Didan, Armando Barreto
data-presentation-form Digital Science Data
graphic-preview-description Browse image for Earthdata Search
graphic-preview-file https://e4ftl01.cr.usgs.gov/WORKING/BRWS/Browse.001/2018.06.11/BROWSE.VNP13A2.A2018145.h18v03.001.2018161234032.1.jpg
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harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C1392010614-LPDAAC_ECS
issued 2018-07-19
landingPage https://doi.org/10.5067/VIIRS/VNP13A2.001
language {en-US}
metadata_type geospatial
modified 2018-07-19
programCode {026:001}
publisher LP DAAC
release-place Sioux Falls, South Dakota, USA
resource-type Dataset
series-name VNP13A2
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source_schema_version 1.1
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temporal 2012-01-17T00:00:00Z/2024-06-03T00:00:00Z
theme {NPP-JPSS,geospatial}