Journal of Atmospheric Chemistry

, Volume 13, Issue 3, pp 289–299

Temperature-dependence of ultraviolet absorption cross-sections of alternative chlorofluoroethanes: 2. The 2-chloro-1,1,1,2-tetrafluoro ethane -HCFC-124

  • Didier Gillotay
  • Baul C. Simon
Article

DOI: 10.1007/BF00058136

Cite this article as:
Gillotay, D. & Simon, B.C. J Atmos Chem (1991) 13: 289. doi:10.1007/BF00058136

Abstract

The temperature-dependent ultraviolet absorption cross-sections of CF3-CHFCI (HCFC-124) have been measured between 170 and 230 nm for temperatures ranging from 295 to 210 K, with uncertainties between 2 and 4%. These results are compared with other available sets of determinations. Temperature effects are discussed and the photodissociation coefficients, presented with their temperature dependence, are calculated. Implication of the temperature dependences on the stratospheric chemistry is also discussed. Parametrical formulae are proposed to compute absorption crosssection values for wavelengths and temperatures useful in modelling calculations.

Key words

Alternative hydro-chloro-fluoro-ethanes UV absorption eross-sections photodissociation coefficients temperature dependence 

Copyright information

© Kluwer Academic Publishers 1991

Authors and Affiliations

  • Didier Gillotay
    • 1
  • Baul C. Simon
    • 1
  1. 1.Institut d'Aéronomie Spatiale de BelgiqueBruxellesBelgium

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