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AIRS/Aqua L2 Near Real Time (NRT) Cloud-Cleared Infrared Radiances (AIRS-only) V006 (AIRS2CCF_NRT) at GES DISC

Metadata Updated: April 1, 2024

The Atmospheric Infrared Sounder (AIRS) Level 2 Near Real Time (NRT) Cloud-Cleared Infrared Radiances (AIRS-only) product (AIRS2CCF_NRT_006) differs from the routine product (AIRS2CCF_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 produced using AIRS IR only because the radiometric noise in AMSU channel 4 started to increase significantly (since June 2007). Cloud-Cleared Radiances contain calibrated, geolocated channel-by-channel AIRS infrared radiances (milliWatts/m2/cm-1/steradian) that would have been observed within each AMSU footprint if there were no clouds in the FOV and produced along with the AIRS Standard Product, as they are the radiances used to retrieve the Standard Product. Nevertheless, they are an order of magnitude larger in data volume than the remainder of the Standard Products and, many Standard Product users are expected to have little interest in the Cloud Cleared Radiance. For these reasons they are a separate output file. The AIRS2CCF_NRT_006 products are stored in files (often referred to as "granules") that contain 6 minutes of data, 30 footprints across track by 45 lines along track.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

References

https://doi.org/10.1109/TGRS.2002.808236
https://doi.org/10.1117/1.JRS.8.084994

Dates

Metadata Created Date November 12, 2020
Metadata Updated Date April 1, 2024

Metadata Source

Harvested from NASA Data.json

Graphic Preview

Sample data of the "AIRS/Aqua Level 2 Cloud-Cleared Infrared (IR) Radiances Product".

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date April 1, 2024
Publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
Maintainer
Identifier C1345119267-GES_DISC
Data First Published 2024-03-18
Language en-US
Data Last Modified 2024-03-27
Category Aqua, LANCE, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Citation AIRS Science Team/Joao Teixeira. 2016-10-15. AIRS2CCF_NRT. Version 006. AIRS/Aqua L2 Near Real Time (NRT) Cloud-Cleared Infrared Radiances (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/AIRS2CCF_NRT_006.html. Digital Science Data.
Creator AIRS Science Team/Joao Teixeira
Data Presentation Form Digital Science Data
Graphic Preview Description Sample data of the "AIRS/Aqua Level 2 Cloud-Cleared Infrared (IR) Radiances Product".
Graphic Preview File https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/AIRS2CCF_NRT_006.jpeg
Harvest Object Id 6b576ab0-feee-49f6-861f-892748d54c28
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://cmr.earthdata.nasa.gov:443/search/concepts/C1345119267-GES_DISC.html
Metadata Type geospatial
Old Spatial -180.0 -90.0 180.0 90.0
Program Code 026:001
Related Documents https://doi.org/10.1109/TGRS.2002.808236, https://doi.org/10.1117/1.JRS.8.084994
Release Place Greenbelt, MD, USA
Series Name AIRS2CCF_NRT
Source Datajson Identifier True
Source Hash c2aa26c4e839b795c4304f6e8d440b181ef11de9bbbb9d80013c59121b978893
Source Schema Version 1.1
Spatial
Temporal 2016-10-15T00:00:00Z/2024-04-01T00:00:00Z

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