AIRS/Aqua Level 1B Visible/Near Infrared (VIS/NIR) geolocated and calibrated radiances V005 (AIRVBRAD) at GES DISC
Entry ID: GES_DISC_AIRVBRAD_V005
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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.
The AIRS Visible/Near Infrared (VIS/NIR) level 1B data set contains AIRS visible and near-infrared calibrated and geolocated radiances in W/m^2/micron/steradian. This data set is generated from AIRS level 1A digital numbers (DN), including 4 channels in the 0.4 to 1.0 um region of the spectrum. A day's worth of AIRS data is divided into 240 scenes each of 6 minute duration. For the AIRS visible/near IR measurements, an individual scene contains 135 scanlines with a scanline containing 720 cross-track pixels and 9 along-track pixels; there is a total of 720 x 9 x 135 = 874,800 visible/near-IR pixels per scene.
AIRS employs a 49.5 degree crosstrack scanning with a 1.1 degree instantaneous field of view (IFOV) to provide twice daily (day and night) coverage of essentially the entire globe in a 1:30 PM sun synchronous orbit from a 705 km altitude. The primary purpose of the visible/near IR channels is the detection and flagging of significant inhomogeneities in the AIRS infrared field-of-view,which may adversely impact the quality of the temperature and moisture soundings. The AIRS VIS/NIR channels will also be used for comparative studies with the higher resolution MODIS channels contained within this spectral region.
(The Shortname for this product is AIRVBRAD).
Coverage: Global, Twice Daily (Daytime and Nighttime)
Resolution: 2.3 km IFOV at nadir
Spectral Range: Four channels, from 0.4 - 1.0 um:
Wavelengths at 50% peak response:
Channel 1 0.41 um - 0.44 um
Channel 2 0.58 um - 0.68 um
Channel 3 0.71 um - 0.92 um
Channel 4 0.49 um - 0.94 um
Description: Access the AIRS Visible/Near Infrared VIS/NIR) geolocated and calibrated L1B radiances by FTP.
Link: GET DATA > MIRADOR
Description: Access the AIRS Level 1B Visible/Near Infrared (VIS/NIR) Geolocated and Calibrated Radiances data via MIRADOR.
Link: GET DATA > OPENDAP DIRECTORY (DODS)
Description: Access the AIRS Level 1B Visible/Near Infrared (VIS/NIR) Geolocated and Calibrated Radiances data through OPeNDAP.
Link: GET DATA > SSW
Description: Access the AIRS Level 1B Visible/Near Infrared (VIS/NIR) Geolocated and Calibrated Radiances data using Simple Subset Wizard (Search and subset by date and spatial region).
Link: GET DATA > REVERB
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, algorithms, and other AIRS-related activities can be found.
Link: VIEW RELATED INFORMATION
Description: AIRS data support home page at Goddard Earth Sciences Data Information and Service Center/Distributed Active Archive Center (GES DISC DAAC). 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 AIRVBRAD
|N: 90.0||S: -90.0||E: 180.0||W: -180.0||
Data Set Citation
AIRS Science Team/Moustafa Chahine
Dataset Title: AIRS/Aqua Level 1B Visible/Near Infrared (VIS/NIR) geolocated and calibrated radiances
Dataset Series Name: AIRVBRAD
Dataset Release Date: 2007-07-26
Dataset Release Place: Greenbelt, MD, USA
Dataset Publisher: Goddard Earth Science Data and Information Services Center (GES DISC)
Data Presentation Form: Digital Science Data
Online Resource: http://disc.sci.gsfc.nasa.gov/datacollection/AIRVBRAD_V005.html
|Start Date: 2002-08-30|
> ATLANTIC OCEAN
OCEAN > INDIAN OCEAN
OCEAN > PACIFIC OCEAN
GEOGRAPHIC REGION > GLOBAL
GEOGRAPHIC REGION > GLOBAL LAND
GEOGRAPHIC REGION > GLOBAL OCEAN
2.3 kilometers IFOV at nadir
Longitude Resolution: 2.3 kilometers IFOV at nadir
Temporal Resolution: Once per day; Day only; Orbital repeat cycle 16 days
|SPECTRAL/ENGINEERING >VISIBLE WAVELENGTHS >VISIBLE RADIANCE [Definition]|
ISO Topic Category
IMAGERY/BASE MAPS/EARTH COVER
|AQUA >Earth Observing System, AQUA [Information]|
|AIRS >Atmospheric Infrared Sounder [Information]|
|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]|
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
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
Data Center URL: http://disc.gsfc.nasa.gov/
Distribution_Size: 12.0 MB
Role: DIF AUTHOR
Email: asghar.e.esfandiari at nasa.gov
Goddard Earth Sciences Data and Information Services Center
NASA Goddard Space Flight Center
Province or State: MD
Postal Code: 20771
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