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Global Change Master Directory (GCMD)
AIRS/Aqua L1B Near Real Time (NRT) Infrared (IR) geolocated and calibrated radiances V005 (AIRIBRAD_NRT) at GES DISC
Entry ID: AIRIBRAD_NRT_005


Summary
Abstract: The AIRS Level 1B Near Real Time (NRT) product (AIRIBRAD_NRT_005) differs from the routine product (AIRIBRAD_005) in 2 ways to meet the three hour latency requirements of the Land Atmosphere NRT Capability Earth Observing System (LANCE): (1) The NRT granules are produced without previous or subsequent granules if those granules are not available within 5 minutes, (2) the predictive ephemeris/attitude data are used rather than the definitive ephemeris/attitude. The consequences of these differences are described in the AIRS Near Real Time (NRT) data products document. The Atmospheric Infrared Sounder (AIRS) is a grating spectrometer (R = 1200) 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 Infrared (IR) level 1B data set contains AIRS calibrated and geolocated radiances in milliWatts/m^2/cm^-1/steradian for 2378 infrared channels in the 3.74 to 15.4 micron region of t he spectrum. The AIRS instrument is co-aligned with AMSU-A so that successive blocks of 3 x 3 AIRS footprints are contained within one AMSU-A footprint. The AIRIBRAD_NRT_005 products are stored in files (often referred to as "granules") that contain 6 minutes of data, 90 footprints across track by 135 lines along track.

Purpose: The Near Real Time (NRT) product is for users whose primary interest is the low latency for data availability. While standard data products are available within 3 days of observation, NRT data are usually available within 3 hours of observation.

Related URL
Link: View Related Information
Description: Sample image of AIRIBRAD


Link: View Related Information
Description: Access the data via HTTPS. User registration is required. Register for a username and password at https://urs.eosdis.nasa.gov/users/new


Link: View Related Information
Description: Access the data via the OPeNDAP protocol.


Link: View Related Information
Description: Access the data via datacasting.


Link: View Related Information
Description: Use the Earthdata Search to find and retrieve data sets across multiple data centers.


Link: View Related Information
Description: AIRS home page at NASA/JPL. General information on the AIRS instrument suite, algorithms, and other AIRS-related activities can be found.


Link: View Related Information
Description: AIRS Documentation Page


Link: View Related Information
Description: AIRIBRAD_NRT information page


Link: View Related Information
Description: README Document


Link: View Related Information
Description: Memo on NRT vs Standard Product


Link: View Related Information
Description: Summary of validation status of products


Link: View Related Information

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

Data Set Citation
Dataset Creator: AIRS Science Team/Moustafa Chahine
Dataset Title: AIRS/Aqua L1B Near Real Time (NRT) Infrared (IR) geolocated and calibrated radiances V005
Dataset Series Name: AIRIBRAD_NRT
Dataset Release Date: 2007-07-26T00:00:00.000Z
Dataset Release Place: Greenbelt, MD, USA
Dataset Publisher: Goddard Earth Sciences Data and Information Services Center (GES DISC)
Version: 005
Data Presentation Form: Digital Science Data
Online Resource: https://disc.gsfc.nasa.gov/datacollection/AIRIBRAD_NRT_005.html


Temporal Coverage
Start Date: 2015-12-15


Location Keywords
GEOGRAPHIC REGION > GLOBAL


Science Keywords
ATMOSPHERE >AEROSOLS >DUST/ASH/SMOKE    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >SULFUR COMPOUNDS >SULFUR DIOXIDE    [Definition]
SPECTRAL/ENGINEERING >INFRARED WAVELENGTHS >INFRARED RADIANCE    [Definition]


Platform
Aqua >Earth Observing System, Aqua    [Information]


Instrument
AIRS >Atmospheric Infrared Sounder    [Information]


Project
Aqua >Earth Observing System (EOS), Aqua    [Information]
LANCE >Land, Atmosphere Near real-time Capability for EOS    [Information]


Access Constraints
You must register using the EOSDIS User Registration System in order to access LANCE NRT AIRS data. You can register at https://urs.eosdis.nasa.gov/users/new


Keywords
Dust Flag
Dust Score
Volcanic Sulfur Dioxide Indicator
FLUX
EOSDIS
NRT
RELATIVE_START_DATE: -7


Data Set Progress
ACTIVE


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: https://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: Online Archive
Distribution_Size: 1.6 MB
Distribution_Format: HDF-EOS
Fees: None


Personnel
ED ESFANDIARI
Role: METADATA 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


Extended Metadata Properties
(Click to view more)

Creation and Review Dates
DIF Creation Date: 2010-07-20
Last DIF Revision Date: 2019-01-25



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