UARS Halogen Occultation Experiment (HALOE) Level 2 V019 (UARHA2FN) at GES DISC

The Halogen Occultation Experiment (HALOE) Level 2 data product consists of daily vertical profiles of temperature, aerosol extinciton and pressure, as well as concentrations of HCl, HF, CH4, NO by gas filter correlation radiometry and H2O, NO2, O3 and CO2 by broadband filter radiometry. The instrument measured atmospheric infrared absorption at wavelengths from 2.43 to 10.25 microns. HALOE was flown on NASA's Upper Atmosphere Research Satellite (UARS) to investigate upper atmosphere chemistry, dynamics and radiative processes, particlarly stratospheric ozone destruction and chlorofluromethane impact on ozone. HALOE is a solar occultation experiment which typically views 15 sunrise and sunset events each day. Limb measurements were made in the altitude range between 3 km and 130 km (depending on channel) with less than 1 km resolution. For a given day, the profiles were in two distinct latitude bands, for the sunset and sunrise events. Coverage across the full range of latitudes between 80S and 80N was achieved on a time period ranging from about two to six weeks, depending on the time of year. The HALOE Level 2 data were processed with the version 19 algorithm.

The HALOE level 2 product consists of a single granule or file per day. A data granule contains all measured HALOE species and subtypes, and ancillary information. Aerosol extinction coefficients are measured in units of 1/km, chemical species are given in mixing ratios, and temperature is in units of degrees Kelvin. HALOE level 2 data are on 491 instrument resolution altitude levels. 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, 03:44 (UTC)
Created February 19, 2025, 03:44 (UTC)
accessLevel public
bureauCode {026:00}
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citation Russell III, James M., et al.. 1999-03-12. UARHA2FN. Version 019. UARS Halogen Occultation Experiment (HALOE) Level 2 V019. 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/UARHA2FN_019.html. Digital Science Data.
creator Russell III, James M., et al.
data-presentation-form Digital Science Data
graphic-preview-file https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/UARHA2FN_019.png
harvest_object_id 387a697d-d82e-4607-a3e1-f9e3c8595f63
harvest_source_id b37e5849-07d2-41cd-8bb6-c6e83fc98f2d
harvest_source_title DNG Legacy Data
identifier C1273348497-GES_DISC
issued 2007-02-20
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C1273348497-GES_DISC.html
language {en-US}
metadata_type geospatial
modified 2007-02-20
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
release-place Greenbelt, MD, USA
resource-type Dataset
series-name UARHA2FN
source_datajson_identifier true
source_hash 14d5479f2394523a18040e7b42965be66699f4c0dd875ae7d28f55211166ae69
source_schema_version 1.1
spatial -180.0 -80.0 180.0 80.0
temporal 1991-10-11T00:00:00Z/2005-11-21T23:59:59.999Z
theme {UARS,geospatial}