Delta-X: Ecogeomorphic Cell Products across the MRD, LA, USA, 2021

This product delineates the Mississippi River Delta (MRD) landscape into distinct ecogeomorphic cells, which are small contiguous areas of land with similar ecological and geomorphological characteristics. The study area is the Atchafalaya and Terrebonne basins of the MRD in southern Louisiana, U.S., which was the focus of NASA's 2021 Delta-X campaign. Each ecogeomorphic cell is a small homogeneous area of similar vegetation and elevation (or bathymetry). A "cell" typically consists of a cluster of contiguous pixels in a raster image, although cells of single pixels are present. The elevation was derived from the USGS Digital Elevation Model, and the vegetation was characterized by its spectral signature as measured by near infrared (NIR) reflectance and normalized difference vegetation index (NDVI). NIR and NDVI were computed from Sentinel-2 images acquired January through September 2021. The data are provided in shapefile and GeoTIFF formats. The vector shapefiles contain the distinct ecogeomorphic cells as polygons with unique labels (i.e., ID number). A raster image of these ecogeomorphic cells provided wherein the pixel values are the polygon labels from the shapefiles. The GeoTIFFs hold the mean and standard deviations of bathymetry, NIR, and NDVI spectral indices within each ecogeomorphic region (polygon). The raster data are provided with a spatial resolution of 0.000045 degrees (approximately 5 meters).

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated September 22, 2026, 09:47 (UTC)
Created April 1, 2025, 15:22 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 14853d41-40c8-46a4-8134-298c33e7d62e
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/2108
license https://www.usa.gov/government-works
modified 2026-09-14T22:16:02Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 5279784b2807884c31eeb6b6ecd5101e13b5457fe48b4f75bee8a858a4e1ff0a
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -91.5502, "NorthBoundingCoordinate": 29.7447, "EastBoundingCoordinate": -90.2081, "SouthBoundingCoordinate": 29.018}]]
temporal 2021-01-01/2021-09-30
theme {"Earth Science"}