UARS High Resolution Doppler Imager (HRDI) Level 3AT V001 (UARHR3AT) at GES DISC
Entry ID: GES_DISC_UARHR3AT_V001

[ Get Data ]
[ Update this Record ]

Summary
Abstract: The High Resolution Doppler Imager (HRDI) Level 3AT data product consists of daily, 65.536 second interval time-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 3AT data were processed with the version 11 algorithm.

The HRDI level 3AT product consists of 8 granules per day. A data granule is one HRDI species or subtype per day. The following subtypes are available:

1) MERWIN_A - meridional wind component on altitude grid [m/s]
2) MERWIN_P - meridional wind component on pressure grid [m/s]
3) ZONWIN_A - zonal wind component on altitude grid [m/s]
4) ZONWIN_P - zonal wind component on pressure grid [m/s]
5) TEMP_A - temperature on altitude grid [Kelvin]
6) TEMP_P - temperature on pressure grid [Kelvin]
7) VOLER_A - O2 volume emission rate on altitude grid [cm-3]
8) VOLER_P - O2 volume emission rate on pressre grid [cm-3]

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

z(i) = 5*i 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.

Related URL
Link: GET DATA > ON-LINE ARCHIVE
Description: Access the data via anonymous FTP.


Link: GET DATA > MIRADOR
Description: Mirador is a search and download interface of data archived at the NASA GES DISC.


Link: GET DATA > REVERB
Description: Reverb, the ECHO client, allows one to search and retrieve data across multiple data archive centers.


Link: VIEW PROJECT HOME PAGE
Description: The HRDI Homepage at the University of Michigan.


Link: VIEW RELATED INFORMATION > USER'S GUIDE
Description: README Document


Geographic Coverage
 N: 76.0 S: -76.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Originator/Creator: Hays, Paul B., Abreu, Vincent J., et al.
Dataset Title: UARS High Resolution Doppler Imager (HRDI) Level 3AT
Dataset Series Name: UARHR3AT
Dataset Release Date: 1996
Dataset Release Place: Greenbelt, MD, USA
Dataset Publisher: Goddard Earth Science Data and Information Services Center (GES DISC)
Version: 001
Data Presentation Form: Digital Science Data
Online Resource: http://disc.gsfc.nasa.gov/datacollection/UARHR3AT_V001.html


Temporal Coverage
Start Date: 1991-11-06
Stop Date: 1999-01-30


Location Keywords
GEOGRAPHIC REGION > GLOBAL
VERTICAL LOCATION > MESOSPHERE
VERTICAL LOCATION > STRATOSPHERE


Data Resolution
Latitude Resolution: 500 km
Longitude Resolution: 55 km wide footprint at limb tangent point
Vertical Resolution: 3 - 5 km
Temporal Resolution: Twice daily; ascending and descending nodes; 36-day yaw cycle


Science Keywords
ATMOSPHERE >ATMOSPHERIC WINDS >UPPER LEVEL WINDS >U WIND COMPONENT    [Definition]
ATMOSPHERE >ATMOSPHERIC WINDS >UPPER LEVEL WINDS >V WIND COMPONENT    [Definition]
ATMOSPHERE >ATMOSPHERIC TEMPERATURE >AIR TEMPERATURE    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Platform
UARS >Upper Atmosphere Research Satellite    [Information]


Instrument
HRDI >High Resolution Doppler Imager    [Information]


Project
EOSDIS >Earth Observing System Data Information System    [Information]
ESIP >Earth Science Information Partners Program    [Information]
UARS >Upper Atmosphere Research Satellite    [Information]
CWIC >CEOS WGISS Integrated Catalog    [Information]


Keywords
MERIDIONAL WIND
ZONAL WIND


Data Set Progress
COMPLETE


Originating Center
UARS_CDHF


Data Center
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA    [Information]
Data Center URL: http://disc.gsfc.nasa.gov/

Data Center Personnel
Name: GES DISC HELP DESK SUPPORT GROUP
Phone: 301-614-5224
Fax: 301-614-5268
Email: gsfc-help-disc at lists.nasa.gov
Contact Address:
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA



Distribution
Distribution_Media: FTP/HTTP
Distribution_Size: 84.5 MB
Distribution_Format: Binary
Fees: None


Personnel
VINCENT J. ABREU
Role: INVESTIGATOR
Phone: (313) 747-3640
Email: abreu at umich.edu
Contact Address:
The University of Michigan
Space Physics Research Laboratory
2455 Hayward
City: Ann Arbor
Province or State: MI
Postal Code: 48109-2143
Country: USA


JAMES EDWARD JOHNSON
Role: DIF AUTHOR
Phone: 301-614-5121
Email: James.Johnson at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Code 610.2
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


GES DISC HELP DESK SUPPORT GROUP
Role: TECHNICAL CONTACT
Phone: 301-614-5224
Fax: 301-614-5268
Email: gsfc-help-disc at lists.nasa.gov
Contact Address:
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


Publications/References
Reber, Carl A., Trevathan, Charles E., The Upper Atmosphere Research Satellite, J. Geophys. Res., Vol. 98, No. D6, pp 10643-10647 June 20, 1993.

Hays, Paul B., et al., The High-Resolution Doppler Imager on the Upper Atmosphere Research Satellite, J. Geophys. Res., Vol. 98, No. D6, pp 10713-10723, June 20, 1993.

Creation and Review Dates
DIF Creation Date: 2007-02-26
Last DIF Revision Date: 2014-11-16
Future DIF Review Date: 2015-08-01

[ Update this Record ]


Link to Web Site