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Published June 1, 2006 | Published
Journal Article Open

Direct retrieval of stratospheric CO_2 infrared cooling rate profiles from AIRS data

Abstract

We expand upon methods for retrieving thermal infrared cooling rate profiles, originally developed by Liou and Xue (1988) through application to the inversion of the stratospheric cooling rate produced by carbon dioxide (CO_2) and a formal description of the associated error budget. Specifically, we infer lower- and mid-stratospheric cooling rates from the CO_2 ν_2 band on the basis of selected spectral channels and available data from the Atmospheric Infrared Sounder (AIRS). In order to establish the validity of our results, we compare our retrievals to those calculated from a forward radiative transfer program using retrieved temperature data from spectra taken by the Scanning High-Resolution Interferometer Sounder (S-HIS) on two aircraft campaigns: the Mixed-Phase Arctic Cloud Experiment (MPACE) and the Aura Validation Experiment (AVE) both in Fall, 2004. Reasonable and consistent comparisons are illustrated, revealing that spectral radiance data taken by high-resolution infrared sounders can be used to determine the vertical distribution of radiative cooling due to CO_2.

Additional Information

© 2006 by the American Geophysical Union. Received 28 September 2005; Revised 31 January 2006; Accepted 24 April 2006; Published 1 June 2006. We would like to acknowledge the following individuals for their assistance: David Rider, Jack Margolis, and George Aumann of JPL, Tony Clough from AER, Inc., Gail Anderson of the NOAA and Xun Jiang, Vijay Natraj, Run-Lie Shia and Xin Guo of Caltech. D. R. Feldman's research was supported in part by NASA grant NNG04GD76G, the NASA Earth Systems Science Fellowship, and the AIRS Project at JPL. A. Berk's collaboration was supported by AFRL/BAA FA8718-04-C-0073.

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August 22, 2023
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