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Measurements of the Infrared Absorption Cross-Sections of Haloalkanes and Their Use in a Simplified Calculational Approach for Estimating Direct Global Warming Potentials

Published

Author(s)

Vladimir L. Orkin, A G. Guschin, I K. Larin, Robert E. Huie, Michael J. Kurylo III

Abstract

The infrared absorption cross-sections and integrated band intensities for 21 haloakanes: CFCl3, CF2Cl2, CF2Br2, CH2F2, CHR2Cl, CHF2Br, CF3Br, CHCl2-CF2Cl, CHFCl-CFCl2, CHCl2-CF3, CHClBr-Cf3, CHFCl-CFd2^Cl, CHFBr-CF3, CHF2-CF3, CH2Br-CF3, CH2F-CFCl2, CH2F-CF3, CH3-CCl3, CH3-CF3-CF3, and CHF2-CH2-CF3 were measured over the wavenumber range 400 cm-1 to 1600 cm-1 at T = 295 K. The effect of air pressure on measured spectra was also investigated. These results are used to demonstrate a simple calculational approach for estimating the direct global warming potentials of such chemicals. The results obtained are compared with those derived from more comprehensive atmospheric modeling calculations appearing in the literature.
Citation
Journal of Photochemistry and Photobiology A-Chemistry
Volume
157
Issue
No. 2-3

Keywords

CFC, global warming potential, Halon, infrared absorption cross-sections, infrared forcing, pressure broadening

Citation

Orkin, V. , Guschin, A. , Larin, I. , Huie, R. and Kurylo, M. (2003), Measurements of the Infrared Absorption Cross-Sections of Haloalkanes and Their Use in a Simplified Calculational Approach for Estimating Direct Global Warming Potentials, Journal of Photochemistry and Photobiology A-Chemistry (Accessed April 20, 2024)
Created May 1, 2003, Updated February 17, 2017