UARS High Resolution Doppler Imager (HRDI) Level 3AL V011 (UARHR3AL) at GES DISC

The High Resolution Doppler Imager (HRDI) Level 3AL data product consists of daily, 4 degree increment latitude-ordered vertical profiles of meridional and zonal wind components, temperature and volume emmission rate of O2. The instrument measured Doppler shifts of spectral lines in the visible and near-IR between 400 and 800 nm. HRDI was flown on NASA's Upper Atmosphere Research Satellite (UARS) and designed to measure winds and other parameters in the mesosphere and lower thermosphere by primarily observing the Doppler shift of emitted light, and in the stratosphere by observing the Doppler shift of atmospheric absorption features. Measurements were made in the mesosphere between 50 and 115 km, and in the stratosphere between 10 and 40 km at about 2.5 km resolution. Data were collected between latitude 40S and 76N and 76S and 40N, alternating each satellite yaw cycle of about 36 days. The HRDI Level 3AL data were processed with the version 11 algorithm.

The HRDI level 3AL product consists of 8 granules per day. A data granule is one HRDI species or subtype per day.

Data are on the UARS standard altitude levels (in km) given by:

z(i) = 5i for i<=12 z(i) = 60 + (i-12)3 for 13 <= i <= 32 z(i) = 120 + (i-32)*5 for 33 <= i <= 88

as well as 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 VINCENT ABREU
Last Updated February 19, 2025, 09:32 (UTC)
Created February 19, 2025, 09:32 (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
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
citation Hays, Paul B., Abreu, Vincent J., et al.. 1996-12-02. UARHR3AL. Version 011. UARS High Resolution Doppler Imager (HRDI) Level 3AL V011. 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/UARHR3AL_011.html. Digital Science Data.
creator Hays, Paul B., Abreu, Vincent J., et al.
data-presentation-form Digital Science Data
graphic-preview-file https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/UARHR3AL_011.png
harvest_object_id f064da16-d611-4b6c-9d52-bd74f814bb74
harvest_source_id b37e5849-07d2-41cd-8bb6-c6e83fc98f2d
harvest_source_title DNG Legacy Data
identifier C1273348585-GES_DISC
issued 1996-04-05
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C1273348585-GES_DISC.html
language {en-US}
metadata_type geospatial
modified 1996-04-05
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
release-place Greenbelt, MD, USA
resource-type Dataset
series-name UARHR3AL
source_datajson_identifier true
source_hash 2b937772acadf9f48d3f250b059c75908de6246482f29d4cc70c544d58129273
source_schema_version 1.1
spatial -180.0 -76.0 180.0 76.0
temporal 1991-11-06T00:00:00Z/1999-01-30T23:59:59.999Z
theme {UARS,geospatial}