AIRS/Aqua Level 1B HSB geolocated and calibrated brightness temperatures V005 (AIRHBRAD) at GES DISC
Entry ID: GES_DISC_AIRHBRAD_V005

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Summary
Abstract: The Atmospheric Infrared Sounder (AIRS) is a facility instrument aboard the second Earth Observing System (EOS) polar-orbiting platform, EOS Aqua. In combination with the Advanced Microwave Sounding Unit (AMSU) and the Humidity Sounder for Brazil (HSB), AIRS constitutes an innovative atmospheric sounding group of visible, infrared, and microwave sensors. AIRS data will be generated continuously. Global coverage will be obtained twice daily (day and night) on a 1:30pm sun synchronous orbit from a 705-km altitude.

The HSB level 1B data set contains HSB calibrated and geolocated brightness temperatures in degrees Kelvin. This data set is generated from HSB Level 1A digital numbers (DN), including 4 microwave channels in the 150 - 190 GHz region of the spectrum. A day's worth of data is divided into 240 scenes each of 6 minute duration. For the HSB measurements, an individual scene consists of 135 scanlines containing 90
cross-track footprints; thus there is a total of 135 x 90 = 12,150 footprints per HSB scene, which coincide very closely with the AIRS infrared footprints.

HSB is primarily a humidity sounder that provides information on snow/ice cover and precipitation using the 150 GHz window channel, and the coarse distribution of moisture in the troposphere using the 183 GHz channels. Combined with simultaneous measurements from the AIRS and AMSU-A instruments, the calibrated HSB brightness temperatures will be used to initialize the atmospheric moisture profile required for the retrieval of the final AIRS geophysical products. An HSB level 1B daily summary browse product is also available to provide users with a global quick look capability when searching for data of interest. Summary Browse Products are high-level pictorial representations of AIRS Instrument (AIRS Infrared, AMSU-A and HSB) data designed as an aid to ordering data from the GSFC DISC or EDG.

(The Shortname for this product is AIRHBRAD)
Coverage: Global, Twice Daily (Daytime and Nighttime)
Resolution: 13.5 km IFOV at nadir
Spectral Range: 4 channels
Channel 2 150.0 GHz
Channel 3 183.31 \x{00B1} 1.0 GHz
Channel 4 183.31 \x{00B1} 3.0 GHz
Channel 5 183.31 \x{00B1} 7.0 GHz
Note: Channel 1 (89 GHz) has been deleted from HSB.

Related URL
Link: GET DATA > ON-LINE ARCHIVE
Description: Access the AIRS/Aqua Level 1B HSB geolocated and calibrated brightness temperatures data by FTP.


Link: GET DATA > MIRADOR
Description: Access the AIRS/Aqua Level 1B HSB geolocated and calibrated brightness temperatures data using Mirador.


Link: GET DATA > OPENDAP DIRECTORY (DODS)
Description: Access the AIRS/Aqua Level 1B HSB geolocated and calibrated brightness temperatures data through OPeNDAP.


Link: GET DATA > SSW
Description: Access the AIRS/Aqua Level 1B HSB geolocated and calibrated brightness temperatures data using Simple Subset Wizard (Search and subset by date and spatial region).


Link: GET DATA > ECHO
Description: Refine your granule search with ECHO's next generation Earth Science discovery tool (Reverb) using information from this record.


Link: VIEW PROJECT HOME PAGE
Description: AIRS home page at NASA/JPL. General information on the
AIRS instrument suite, algorithms, and other AIRS related activities can be found. The Atmospheric Infrared Sounder (AIRS) instrument suite is designed to measure the Earth's atmospheric water vapor and temperature profiles on a global scale. It is comprised of a space-based hyperspectral infrared instrument(AIRS) and two multichannel microwave instruments, the Advanced Microwave Sounding Unit (AMSU-A) and the Humidity Sounder for Brazil (HSB).


Link: VIEW RELATED INFORMATION
Description: AIRS data support home page at Goddard Earth Sciences DataInformation and Service Center/Distributed Active Archive Center (GES DISC). Online documentation, software to read, visualize and analyze AIRS data and data access information are available from this web site.


Link: VIEW RELATED INFORMATION > USER'S GUIDE
Description: README document for AIRHBRAD.


Geographic Coverage
 N: 90.0 S: -90.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Originator/Creator: AIRS Science Team/Moustafa Chahine
Dataset Title: AIRS/Aqua Level 1B HSB geolocated and calibrated brightness temperatures
Dataset Series Name: AIRHBRAD
Dataset Release Date: 2007-07-26
Dataset Release Place: Greenbelt, MD, USA
Dataset Publisher: Goddard Earth Science Data and Information Services Center (GES DISC)
Version: 005
Data Presentation Form: Digital Science Data
Online Resource: http://disc.sci.gsfc.nasa.gov/datacollection/AIRHBRAD_V005.html


Temporal Coverage
Start Date: 2002-05-24
Stop Date: 2003-11-20


Location Keywords
OCEAN > ATLANTIC OCEAN
OCEAN > INDIAN OCEAN
OCEAN > PACIFIC OCEAN
GEOGRAPHIC REGION > GLOBAL
GEOGRAPHIC REGION > GLOBAL LAND
GEOGRAPHIC REGION > GLOBAL OCEAN


Data Resolution
Latitude Resolution: 13.5 km FOV at nadir
Longitude Resolution: 13.5 km FOV at nadir
Temporal Resolution: Twice per day (daytime and nighttime)


Science Keywords
SPECTRAL/ENGINEERING >MICROWAVE >BRIGHTNESS TEMPERATURE    [Definition]


ISO Topic Category
IMAGERY/BASE MAPS/EARTH COVER


Platform
AQUA >Earth Observing System, AQUA    [Information]


Instrument
HSB >Humidity Sounder for Brazil    [Information]


Project
EOSDIS >Earth Observing System Data Information System    [Information]
ESIP >Earth Science Information Partners Program    [Information]
AQUA >Earth Observing System (EOS), AQUA    [Information]
CWIC >CEOS WGISS Integrated Catalog    [Information]


Quality
V5_CalVal_Status_Summary.pdf
http://disc.sci.gsfc.nasa.gov/AIRS/documentation/v5_docs/AIRS_V5_Re...


Access Constraints
Data are expected to be available from the GSFC Earth Sciences
(GES) Distributed Active Archive Center (DAAC) about one year
after launch. The DAAC Science Team will provide regular
updates regarding data product releases in the future.


Data Set Progress
COMPLETE


Originating Center
GES DAAC


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
Distribution_Size: 1.6 MB
Distribution_Format: HDF-EOS
Fees: None


Personnel
ED ESFANDIARI
Role: DIF AUTHOR
Phone: 301-614-5960
Fax: 301-614-5268
Email: asghar.e.esfandiari at 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



Creation and Review Dates
DIF Creation Date: 2005-12-06
Last DIF Revision Date: 2013-10-21

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