AIRIBRAD_NRT
005
AIRS/Aqua L1B Near Real Time (NRT) Infrared (IR) geolocated and calibrated radiances V005 (AIRIBRAD_NRT) at GES DISC
AIRS Science Team/Moustafa Chahine
AIRS/Aqua L1B Near Real Time (NRT) Infrared (IR) geolocated and calibrated radiances V005
AIRIBRAD_NRT
2007-07-26T00:00:00.000Z
Greenbelt, MD, USA
Goddard Earth Sciences Data and Information Services Center (GES DISC)
005
Digital Science Data
https://disc.gsfc.nasa.gov/datacollection/AIRIBRAD_NRT_005.html
METADATA AUTHOR
ED
ESFANDIARI
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
Greenbelt
MD
20771
USA
301-614-5960
Telephone
301-614-5268
Fax
asghar.e.esfandiari@nasa.gov
EARTH SCIENCE
ATMOSPHERE
AEROSOLS
DUST/ASH/SMOKE
EARTH SCIENCE
ATMOSPHERE
ATMOSPHERIC CHEMISTRY
SULFUR COMPOUNDS
SULFUR DIOXIDE
EARTH SCIENCE
SPECTRAL/ENGINEERING
INFRARED WAVELENGTHS
INFRARED RADIANCE
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
ENVIRONMENT
IMAGERY/BASE MAPS/EARTH COVER
Dust Flag
Dust Score
Volcanic Sulfur Dioxide Indicator
FLUX
EOSDIS
NRT
RELATIVE_START_DATE: -7
Earth Observation Satellites
Aqua
Earth Observing System, Aqua
AIRS
Atmospheric Infrared Sounder
true
2015-12-15T00:00:00.000Z
IN WORK
CARTESIAN
CARTESIAN
-90
90
-180
180
Not provided
GEOGRAPHIC REGION
GLOBAL
Aqua
Earth Observing System (EOS), Aqua
LANCE
Land, Atmosphere Near real-time Capability for EOS
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
The Earth Observing System Data and Information System (EOSDIS) data use policy for NASA data can be accessed at https://earthdata.nasa.gov/earth-observation-data/data-use-policy. For information on how to properly cite and acknowledge data from the NASA GES DISC, refer to https://disc.gsfc.nasa.gov/information/documents?title=data-policy.
English
ARCHIVER
NASA/GSFC/SED/ESD/GCDC/GESDISC
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
https://disc.gsfc.nasa.gov/
DATA CENTER CONTACT
GES DISC HELP DESK SUPPORT GROUP
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
Greenbelt
MD
20771
USA
301-614-5224
Telephone
301-614-5268
Fax
gsfc-dl-help-disc@mail.nasa.gov
us-west-2
s3://gesdisc-cumulus-prod-protected/Aqua_AIRS_NRT/AIRIBRAD_NRT.005/
https://data.gesdisc.earthdata.nasa.gov/s3credentials
https://data.gesdisc.earthdata.nasa.gov/s3credentialsREADME
WARNING: On 2021/09/23 the EOS Aqua executed a Deep Space Maneuver (DSM). In the DSM, the spacecraft is turned such that the normal Earth field of regard is deep space.
The thermal impact of the DSM caused a shift of the centroids of spectral response functions (SRF) of about 1% of the width of the SRF, equivalent to a frequency shift of 9 parts per million. This shift is reflected in the âÂÂspectral_freqâ parameter (observed frequencies) in the L1b v5 files for each 6 minute granule. The magnitude of the effect on brightness temperatures (BT) depends on the spectral gradient of each channel. Maximum BT shifts are approximately +- 0.5 K, although many channels experience far smaller BT shifts. Approximately 1803 channels have BT shifts of less than 0.1 K and 575 channels are now shifted in BT by more than 0.1 K, while 231 of these channels have BT shifts greater than 0.2 K.
Users of the L1b v5 product who are concerned that these shifts may impact their science investigations and applications are encouraged to switch to the AIRS L1c v6.7.4 product, which, among many other improvements, converts the spectra to a fixed frequency grid. END OF WARNING.
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.
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.
VIEW RELATED INFORMATION
USER'S GUIDE
https://discnrt1.gesdisc.eosdis.nasa.gov/data//Aqua_AIRS_NRT/AIRIBRAD_NRT.005/doc/README.AIRIBRAD.pdf
product README file
GET RELATED VISUALIZATION
https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/AIRIBRAD_NRT_005.jpeg
Sample image of AIRIBRAD
DATA SET LANDING PAGE
https://disc.gsfc.nasa.gov/datacollection/AIRIBRAD_NRT_005.html
Access the dataset landing page from the GES DISC website.
GET DATA
DATA TREE
https://discnrt1.gesdisc.eosdis.nasa.gov/data/Aqua_AIRS_NRT/AIRIBRAD_NRT.005/
Access the data via HTTPS. User registration is required. Register for a username and password at https://urs.eosdis.nasa.gov/users/new
USE SERVICE API
OPENDAP DATA
https://discnrt1.gesdisc.eosdis.nasa.gov/opendap/Aqua_AIRS_NRT/AIRIBRAD_NRT.005/contents.html
Access the data via the OPeNDAP protocol.
GET DATA
DATACAST URL
https://discnrt1.gesdisc.eosdis.nasa.gov/datacasting/AIRIBRAD_NRT.005.datacast-feed.xml
Access the data via datacasting.
GET DATA
Earthdata Search
https://search.earthdata.nasa.gov/search?q=AIRIBRAD_NRT+005
Use the Earthdata Search to find and retrieve data sets across multiple data centers.
PROJECT HOME PAGE
https://airs.jpl.nasa.gov/index.html
AIRS home page at NASA/JPL. General information on the AIRS instrument suite, algorithms, and other AIRS-related activities can be found.
VIEW RELATED INFORMATION
https://disc.gsfc.nasa.gov/information/documents?title=AIRS%20Documentation
AIRS Documentation Page
VIEW RELATED INFORMATION
https://disc.gsfc.nasa.gov/datacollection/AIRIBRAD_NRT_005.html
AIRIBRAD_NRT information page
VIEW RELATED INFORMATION
READ-ME
https://docserver.gesdisc.eosdis.nasa.gov/repository/Mission/AIRS/3.3_ScienceDataProductDocumentation/3.3.4_ProductGenerationAlgorithms/README.AIRIBRAD.pdf
README Document
VIEW RELATED INFORMATION
GENERAL DOCUMENTATION
https://docserver.gesdisc.eosdis.nasa.gov/repository/Mission/AIRS/3.3_ScienceDataProductDocumentation/3.3.5_ProductQuality/nrt_memo_v6.pdf
Memo on NRT vs Standard Product
VIEW RELATED INFORMATION
GENERAL DOCUMENTATION
https://docserver.gesdisc.eosdis.nasa.gov/repository/Mission/AIRS/3.7_ScienceDataProductValidation/V5_CalVal_Status_Summary.pdf
Summary of validation status of products
VIEW RELATED INFORMATION
ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)
https://eospso.gsfc.nasa.gov/sites/default/files/atbd/AIRS_L1B_ATBD_Part_1.pdf
CEOS IDN DIF
VERSION 10.2
2010-07-20
2018-11-26
1970-01-01T00:00:00.000Z
1970-01-01T00:00:00.000Z
1B
NEAR_REAL_TIME