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Sounder SIPS: Aqua AIRS Level-1B Calibration Subset: Summary, V2 (SNDRAQIML1BCALSUBSUM) at GES DISC

Metadata Updated: July 16, 2024

The Atmospheric Infrared Sounder (AIRS) is a grating spectrometer (R = 1200) aboard the second Earth Observing System (EOS) polar-orbiting platform, EOS Aqua. AIRS/Aqua Level-1C calibration subset including clear cases, special calibration sites, random nadir spots, and high clouds. Infrared temperature sounders generate a large amount of Level-1B spectral data. For example, the AIRS instrument with 2378 channels, its visible light component and AMSU with 15 channels create 3x240 files each day, for a total of over 500 MB of data.

The purpose of the Calibration Data Subsets is extract key information from these data into a few daily files to: 1. Facilitate a quick evaluation of the absolute calibration of the instruments. 2. Facilitate an assessment of the instrument performance under clear, cloudy, and extreme hot and cold conditions. 3. Facilitate the evaluation of instrument trends and their significance relative to climate trends. 4. Facilitate the comparison of AIRS with CrIS using their equivalent data subsets.

The output files are constructed from Level-1B or Level-1C IR and MW brightness or antenna temperatures. Each file contains selected observations taken from a nominal 24-hour period. The “summary” product includes a large set of cases of interest, including all identified spectra that match selection criteria detailed below for clear, special cloud classes, etc. These amount to about 10% of all spectra. But for each selected case only brightness temperatures (BTs) for selected key channels are saved.

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.

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Metadata Created Date May 30, 2023
Metadata Updated Date July 16, 2024

Metadata Source

Harvested from NASA Data.json

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Additional Metadata

Resource Type Dataset
Metadata Created Date May 30, 2023
Metadata Updated Date July 16, 2024
Identifier C2210019692-GES_DISC
Data First Published 2022-01-28
Language en-US
Data Last Modified 2024-07-11
Category Aqua, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Citation AIRS project, Jet Propulsion Laboratory. 2022-12-12. SNDRAQIML1BCALSUBSUM. Version 2. Sounder SIPS: Aqua AIRS Level-1B Calibration Subset: Summary. Greenbelt, MD, USA. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). Digital Science Data.
Creator AIRS project, Jet Propulsion Laboratory
Data Presentation Form Digital Science Data
Graphic Preview File
Harvest Object Id 30086fc0-d4a7-4ef4-bf44-4a39a24e0fec
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL
Metadata Type geospatial
Old Spatial -180.0 -90.0 180.0 90.0
Program Code 026:001
Related Documents,
Release Place Greenbelt, MD, USA
Source Datajson Identifier True
Source Hash 7a99e476d2c975ae77018264132063c4d98d0e023db64ebcae0f4985af0db6d0
Source Schema Version 1.1
Temporal 2002-08-31T00:00:00Z/2024-07-15T00:00:00Z

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