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AIRHBRAD: AIRS/Aqua Level 1B HSB geolocated and calibrated brightness temperatures

Data Citation

To cite the data in publications:
AIRS Science Team/Moustafa Chahine (2007),AIRS/Aqua Level 1B HSB geolocated and calibrated brightness temperatures,version 005, Greenbelt, MD, USA:Goddard Earth Science Data and Information Services Center (GES DISC), Accessed Enter User Data Access Date at http://disc.sci.gsfc.nasa.gov/datacollection/AIRHBRAD_V005.html

Product Description


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 cap ... View entire text

Product Summary

Short Name:    AIRHBRAD

Version:    005

Format    HDF-EOS

Spatial Coverage:   (90.0 N to -90.0 S; 180.0 E to -180.0 W)

Temporal Coverage: 2002-05-24 to 2003-11-20



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)


File Size:    1.6 MB

Quality:

V5_CalVal_Status_Summary.pdf
http://disc.sci.gsfc.nasa.gov/AIRS/documentation/v5_docs/AIRS_V5_Release_User_Docs/V5_CalVal_Status_Summary.pdf


Data Access

Data Service Name: ON-LINE ARCHIVE
Data Service Description: Access the AIRS/Aqua Level 1B HSB geolocated and calibrated brightness temperatures data by FTP.
Data Service Access URL: ftp://airsl1.gesdisc.eosdis.nasa.gov/ftp/data/s4pa/Aqua_AIRS_Level1/AIRHBRAD.005/

Data Service Name: MIRADOR
Data Service Description: Access the AIRS/Aqua Level 1B HSB geolocated and calibrated brightness temperatures data using Mirador.
Data Service Access URL: http://mirador.gsfc.nasa.gov/cgi-bin/mirador/homepageAlt.pl?keyword=AIRHBRAD

Data Service Name: OPENDAP DIRECTORY (DODS)
Data Service Description: Access the AIRS/Aqua Level 1B HSB geolocated and calibrated brightness temperatures data through OPeNDAP.
Data Service Access URL: http://airsl1.gesdisc.eosdis.nasa.gov/opendap/Aqua_AIRS_Level1/AIRHBRAD.005/contents.html

Data Service Name: SSW
Data Service 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).
Data Service Access URL: http://disc.sci.gsfc.nasa.gov/SSW/#keywords=AIRHBRAD 005

Data Service Name: ECHO
Data Service Description: Refine your granule search with ECHO's next generation Earth Science discovery tool (Reverb) using information from this record.
Data Service Access URL: http://reverb.echo.nasa.gov/reverb/#utf8=%E2%9C%93&spatial_map=satellite&spatial_type=rectangle&keywords=GES_DISC_AIRHBRAD_V005

Product README

Global Change Master Directory Catalog Entry (GCMD DIF):
http://gcmd.gsfc.nasa.gov/getdif.htm?GES_DISC_AIRHBRAD_V005

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Last updated: Mar 09, 2012 06:58 PM ET