MODIS/Terra Gap-Filled, Smoothed EVI 8-Day L4 250m SIN Grid

The MODIS/Terra Gap-Filled, Smoothed NDVI 8-Day L4 250m SIN Grid product, with short-name MOD09Q1G_NDVI is calculated from MODIS surface reflectance products (MOD09), at 250-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 15, 2026, 23:03 (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 7ceb3e64-a0e2-4754-8423-6d6f80fe2661
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.5067/MODIS/MOD09Q1G_EVI.006
license https://www.usa.gov/government-works
modified 2026-06-08T22:16:01Z
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 dae16d5562a415e7b332cad1203a76c56047e69c3d1a0c2d0b0a88040b32582a
source_schema_version 1.1
spatial ["CARTESIAN", [{"NorthBoundingCoordinate": 90.0, "WestBoundingCoordinate": -180.0, "EastBoundingCoordinate": 180.0, "SouthBoundingCoordinate": -90.0}]]
temporal 2001-01-01/2026-06-08
theme {"Earth Science"}