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Initial Processing of Infrared Spectral DataThe Atmospheric Infrared Spectrometer (AIRS) Science Processing System is a collection of computer programs, denoted product generation executives (PGEs), for processing the readings of the AIRS suite of infrared and microwave instruments orbiting the Earth aboard NASA's Aqua spacecraft. Following from level 0 (representing raw AIRS data), the PGEs and their data products are denoted by alphanumeric labels (1A, 1B, and 2) that signify the successive stages of processing. Once level-0 data have been received, the level-1A PGEs begin processing, performing such basic housekeeping tasks as ensuring that all the Level-0 data are present and ordering the data according to observation times. The level-1A PGEs then perform geolocation-refinement calculations and conversions of raw data numbers to engineering units. Finally, the level-1A data are grouped into packages, denoted granules, each of which contain the data from a six-minute observation period. The granules are forwarded, along with calibration data, to the Level-1B PGEs for processing into calibrated, geolocated radiance products. The Level-2 PGEs, which are not yet operational, are intended to process the level-1B data into temperature and humidity profiles, and other geophysical properties.
Document ID
20110020341
Acquisition Source
Jet Propulsion Laboratory
Document Type
Other - NASA Tech Brief
External Source(s)
http://www.techbriefs.com/component/content/399?task=view
Authors
De Picciotto, Solomon (California Inst. of Tech. Pasadena, CA, United States)
Chang, Albert (California Inst. of Tech. Pasadena, CA, United States)
Sun, Zi-Ping (California Inst. of Tech. Pasadena, CA, United States)
Ting, Yuan-Ti (California Inst. of Tech. Pasadena, CA, United States)
Manning, Evan (California Inst. of Tech. Pasadena, CA, United States)
Gaiser, Steven (California Inst. of Tech. Pasadena, CA, United States)
Lambrigtsen, Bjorn (California Inst. of Tech. Pasadena, CA, United States)
Hofstadter, Mark (California Inst. of Tech. Pasadena, CA, United States)
Hearty, Thomas (California Inst. of Tech. Pasadena, CA, United States)
Pagano, Thomas (California Inst. of Tech. Pasadena, CA, United States)
Aumann, Hartmut (California Inst. of Tech. Pasadena, CA, United States)
Broberg, Steven (California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 25, 2013
Publication Date
November 1, 2004
Publication Information
Publication: NASA Tech Briefs, November 2004
Subject Category
Man/System Technology And Life Support
Report/Patent Number
NPO-35243
Distribution Limits
Public
Copyright
Public Use Permitted.

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