AIRS/Aqua L2 Near Real Time (NRT) Support Retrieval (AIRS-only) V006 (AIRS2SUP_NRT) at GES DISC

The Atmospheric Infrared Sounder (AIRS) Level 2 Near Real Time (NRT) Support Retrieval (AIRS-only) product (AIRS2SUP_NRT_006) differs from the routine product (AIRS2SUP_006) in four 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, (3) if the forecast surface pressure is unavailable, a surface climatology is used, and (4) no ice cloud properties retrievals are performed. 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. This product is product produced using AIRS IR only because the radiometric noise in AMSU channel 4 started to increase significantly (since June 2007). The Support Product includes higher vertical resolution profiles of the quantities found in the Standard Product, plus intermediate outputs (e.g., microwave-only retrieval), research products such as the abundance of trace gases, and detailed quality assessment information. The Support Product profiles contain 100 levels between 1100 and .016 mb; this higher resolution simplifies the generation of radiances using forward models, though the vertical information content is no greater than that in the Standard Product profiles. The intended users of the Support Product are researchers interested in generating forward radiance or in examining research products, and the AIRS algorithm development team. The Support Product is generated at all locations as Standard Products. An AIRS granule has been set as 6 minutes of data, 30 footprints cross track by 45 scanlines. There are 240 granules per day, with an orbit repeat cycle of approximately 16 day.

Data and Resources

Additional Info

Field Value
Maintainer ED ESFANDIARI
Last Updated March 31, 2025, 16:02 (UTC)
Created March 31, 2025, 16:02 (UTC)
accessLevel public
bureauCode {026:00}
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citation AIRS Science Team/Joao Teixeira. 2016-10-15. AIRS2SUP_NRT. Version 006. AIRS/Aqua L2 Near Real Time (NRT) Support Retrieval (AIRS-only) V006. Greenbelt, MD, USA. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). https://disc.gsfc.nasa.gov/datacollection/AIRS2SUP_NRT_006.html. Digital Science Data.
creator AIRS Science Team/Joao Teixeira
data-presentation-form Digital Science Data
graphic-preview-description Sample plot of AIRS Level 2 Support Retrieval (AIRS-only) H2O Column Density Profile and Cloud Fraction.
graphic-preview-file https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/AIRS2SUP_NRT_006.png
harvest_object_id 517813b2-86b9-45fc-8c1c-500c67185362
harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C1345119372-GES_DISC
issued 2024-07-11
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C1345119372-GES_DISC.html
language {en-US}
metadata_type geospatial
modified 2024-08-07
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
references {https://doi.org/10.5194/acp-14-399-2014,https://doi.org/10.1117/1.JRS.8.084994,https://doi.org/10.1002/2014JD022551,https://doi.org/10.1002/2014JD02166,https://doi.org/10.1002/2016JD024806,https://doi.org/10.1002/2015JD024008,https://doi.org/10.1029/2005/JD007020,https://doi.org/10.1109/TGRS.2002.808236}
release-place Greenbelt, MD, USA
resource-type Dataset
series-name AIRS2SUP_NRT
source_datajson_identifier true
source_hash 1a3a453e1e5b49fe0044af65d392d480f9d2a479b3517136a99f2cf6b77b774c
source_schema_version 1.1
spatial -180.0 -90.0 180.0 90.0
temporal 2016-10-15T00:00:00Z/2024-08-12T00:00:00Z
theme {Aqua,LANCE,geospatial}