ATom: Measurements from the UAS Chromatograph for Atmospheric Trace Species (UCATS)

This dataset, collected with the Unmanned Aircraft Systems (UAS) Chromatograph for Atmospheric Trace Species (UCATS), provides atmospheric concentrations of nitrous oxide (N2O), sulfur hexafluoride (SF6), methane (CH4), hydrogen (H2), carbon monoxide (CO), water vapor (H2O), and ozone (O3). The UCATS system is three different instruments in one enclosure: a two-channel chromatograph with electron capture detectors (one measures N2O and SF6, the other measures CH4, H2 and CO), a tunable diode laser instrument for H2O, and a dual-beam O3 photometer.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated June 22, 2026, 19:12 (UTC)
Created April 1, 2025, 14:38 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
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harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/1750
license https://www.usa.gov/government-works
modified 2026-06-15T22:15:59Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 4c61150d2823e5e833cd162d6475fef60003d1cd7747f44f07478e7ab70e7899
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -180.0, "NorthBoundingCoordinate": 90.0, "EastBoundingCoordinate": 180.0, "SouthBoundingCoordinate": -90.0}]]
temporal 2016-07-12/2018-05-21
theme {"Earth Science"}