ATMOS L2 Trace Gases on Altitude Grid, Tab Delimited Format V3 (ATMOSL2AT) at GES DISC

This is the version 3 Atmospheric Trace Molecule Spectroscopy (ATMOS) Level 2 product containing trace gases on a vertical altitude (km) grid with data stored in an ASCII table using a spreadsheet friendly tab delimited format. ATMOS is an infrared spectrometer (a Fourier transform interferometer) designed to derive vertical concentrations of various trace gases in the atmosphere, particularly the ozone depleting chlorine and fluorine based molecules. Measured species include: H2O, CO2, O3, N2O, CO, CH4, NO and NO2 (both diurnally and not diurnally corrected), HNO3, HF, HCl, OCS, H2CO, HOCl, H2O2, HO2NO2, N2O5, ClONO2, HCN, CH3F, CH3Cl, CF4, CCl2F2, CCl3F, CCl4, COF2, C2H6, C2H2, N2, CHF2Cl, HCOOH, HDO, SF6 and CH3D reported at 100 levels from 0.5 to 99.5 km. Data files also include time, geolocation and other information. The data were collected during four space shuttle missions: STS-51B/Spacelab 3 (April 30 to May 1, 1985), STS-45/ATLAS-1 (March 25 to April 2, 1992), STS-55/ATLAS-2 (April 8 to 16, 1993), and STS-66/ATLAS-3 (November 3 to 12, 1994). Data are written to separate files grouped by mission (sl3, at1, at2 or at3), and occultation type (sunrise or sunset) and number. A similar product (ATMOSL2AF) exists that contains these same data in a FORTRAN friendly fixed field format.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated June 23, 2026, 03:37 (UTC)
Created April 1, 2025, 14:36 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id f74711d5-ccef-472f-864b-b9e269f78b27
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.5067/ATMOS/DATA2001
license https://www.usa.gov/government-works
modified 2026-06-15T22:16:03Z
programCode {026:000}
publisher NASA/GSFC/SED/ESD/TISL/GESDISC
resource-type Dataset
source_datajson_identifier true
source_hash a430e3614de9fced5a3fc9afc710a9902db05f9946efae3c9bae6037c92b21f7
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -180, "NorthBoundingCoordinate": 75, "EastBoundingCoordinate": 180, "SouthBoundingCoordinate": -73}]]
temporal 1985-04-30/1985-05-01
theme {"Earth Science"}