UARS Cryogenic Limb Array Etalon Spectrometer (CLAES) Level 3AT V009 (UARCL3AT) at GES DISC

The Cryogenic Limb Array Etalon Spectrometer (CLAES) Level 3AT data product consists of daily, 65.536 second interval time-ordered vertical profiles of temperature and concentrations of O3, H2O, CH4, N2O, NO, NO2, N2O5, HNO3, ClONO2, HCl, CF2Cl2 (CFC-12), CFCl3 (CFC-11), and aerosol absorption coefficients. The instrument measured infrared thermal emissions at wavelengths from 3.5 to 12.7 microns. CLAES was flown on NASA's Upper Atmosphere Research Satellite (UARS) and designed to measure the chemical composition of the stratosphere and mesosphere, and also investigated the depletion of stratospheric ozone and ozone chemistry. Limb measurements were made in the altitude range between 10 and 60 km at about 2.5 km resolution. Data were collected between latitude 34S and 80N and 80S and 34N, alternating each satellite yaw cycle of about 36 days. The CLAES Level 3AT data were processed with the version 9 algorithm, except H2O which is version 7.

The CLAES level 3AL product consists of 20 granules per day. A data granule is one CLAES species or subtype per day. Data are on the UARS standard pressure levels (in mbars) given by:

P(i) = 1000 * 10**(-i/6) for i = 0, 1, 2, ...

The data files are available in a binary record oriented format.

Data and Resources

Additional Info

Field Value
Maintainer JAMES JOHNSON
Last Updated February 19, 2025, 06:30 (UTC)
Created February 19, 2025, 06:30 (UTC)
accessLevel public
bureauCode {026:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.nasa.gov/data.json
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citation Roche, Aidan E., et al.. 2001-07-16. UARCL3AT. Version 009. UARS Cryogenic Limb Array Etalon Spectrometer (CLAES) Level 3AT V009. Greenbelt, MD, USA. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). https://disc.gsfc.nasa.gov/datacollection/UARCL3AT_009.html. Digital Science Data.
creator Roche, Aidan E., et al.
data-presentation-form Digital Science Data
graphic-preview-file https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/UARCL3AT_009.png
harvest_object_id bf35cd7c-5ae2-43c5-a263-acd3cf32173d
harvest_source_id b37e5849-07d2-41cd-8bb6-c6e83fc98f2d
harvest_source_title DNG Legacy Data
identifier C1273348583-GES_DISC
issued 1999-05-04
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C1273348583-GES_DISC.html
language {en-US}
metadata_type geospatial
modified 1999-05-04
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
release-place Greenbelt, MD, USA
resource-type Dataset
series-name UARCL3AT
source_datajson_identifier true
source_hash c9685fa50febcb5f32adac5bdeb6435f05b7cec9af9359ac245ec23ee90a6d7e
source_schema_version 1.1
spatial -180.0 -80.0 180.0 80.0
temporal 1991-10-25T00:00:00Z/1993-05-05T23:59:59.999Z
theme {UARS,geospatial}