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

Published

May 1, 2003

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-Cf_{3, CHFCl-CF}d2^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

Pub Type

Journals

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 July 18, 2024)