MODIS/Terra Gap-Filled, Smoothed EVI 8-Day L4 500m SIN Grid

The MODIS/Terra Gap-Filled, Smoothed NDVI 8-Day L4 500m SIN Grid product, with short-name MOD09A1G_NDVI is calculated from MODIS surface reflectance products (MOD09), at 500-m resolution. MODIS time series contains occasional lower quality data, gaps from persistent clouds, cloud contamination, and other gaps. Many modeling efforts, such as those used in NACP, that use MODIS data as input, require gap-free data. The procedure contains two algorithm stages, one for smoothing and one for gap filling, which attempt to maximize the use of high-quality data to replace missing or poor-quality observations.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated June 8, 2026, 22:04 (UTC)
Created April 1, 2025, 17:42 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 8c87048c-3e66-4553-89fb-7cb495e83430
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.5067/MODIS/MOD09A1G_EVI.006
license https://www.usa.gov/government-works
modified 2026-06-03T16:52:49Z
programCode {026:000}
publisher NASA/GSFC/SED/ESD/HBSL/BISB/LAADS;NASA/GSFC/SED/ESD/HBSL/BISB/MODAPS
resource-type Dataset
source_datajson_identifier true
source_hash e4ac9e93050f63646ec4d03ad0daa31d22653dc89fceedcf4b6ce1a31ab47cb8
source_schema_version 1.1
spatial ["CARTESIAN", [{"NorthBoundingCoordinate": 90.0, "WestBoundingCoordinate": -180.0, "EastBoundingCoordinate": 180.0, "SouthBoundingCoordinate": -90.0}]]
temporal 2001-01-01/2026-06-03
theme {"Earth Science"}