Delta-X: In situ Beam Attenuation and Particle Size from LISST-200X, 2021

This dataset provides in situ measurements of beam attenuation coefficient at 670 nm, average suspended particle size, particle size distribution, and water temperature in surface waters (~0.5 m) of the Atchafalaya and Terrebonne Basins on the southern coast of Louisiana. The field studies were conducted in the Spring and Fall in support of the Delta-X mission and include measurements made in 2021 during March 25 - April 22 and August 14 - September 24. Measurements were made using the Sequoia Scientific Laser In-Situ Scattering and Transmissometer instrument (LISST-200X) in multiple channels of varying width (from a few meters to >100m), near Delta-X intensive study sites and in open bays and lakes and at a few locations in the nearshore Gulf of Mexico. The data are provided in comma-separated (CSV) format.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated August 18, 2026, 02:05 (UTC)
Created April 1, 2025, 15:23 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 0133af11-efad-4d4f-be20-c5f7834209b7
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/2077
license https://www.usa.gov/government-works
modified 2026-08-10T22:16:02Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 9b2e2df3a8d1d61d5f733484af235cf7671d591c41d9bd4ec4252f9a123b1e4d
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -91.4676, "NorthBoundingCoordinate": 29.7545, "EastBoundingCoordinate": -90.5697, "SouthBoundingCoordinate": 28.7913}]]
temporal 2021-03-25/2021-09-24
theme {"Earth Science"}