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    Stratospheric response to chemical perturbations

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    Brasseur(1985c).pdf (1.271Mb)
    Authors
    Brasseur, G.
    De Rudder, A.
    Tricot, C.
    Discipline
    Earth and related Environmental sciences
    Subject
    carbon dioxide
    chlorofluorohydrocarbon
    methane
    nitrogen oxide
    ozone
    air quality
    nonhuman
    stratosphere
    theoretical study
    chlorofluorocarbons
    ozone
    Audience
    Scientific
    Date
    1985
    Metadata
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    Description
    The paper presents a coupled chemical-radiative one-dimensional model which is used to assess the steady-state and time-dependent composition and temperature changes in relation to the release in the atmosphere of chemicals such as CO2, N2O, CH4, NOx and chlorofluorocarbons. The model indicates that a doubling in CO2 leads to an increase in temperature of 12.7 K near the stratopause and to an increase in total ozone of 3.3% with a local enhancement of 17% at 40 km altitude. Additional release of N2O leads to an ozone reduction in the middle stratosphere. The reduction in the ozone column is predicted to be equal to 8.8% when the amount of N2O is doubled. The chemical effect of CH4 on ozone is particularly important in the troposphere. A doubling in the mixing ratio of this gas enhances the O3 concentration by 11% at 5 km. The predicted increase of the ozone column is equal to 1.4%. A constant emission of CFCl3 (230 kT/yr) and CF2Cl2 (300 kT/yr) leads to a steady-state reduction in the ozone column of 1.9% compared to the present-day situation. The effect of some uncertainties in the chemical scheme as well as the impact of a high chlorine perturbation are briefly discussed. Finally the results of a time dependent calculation assuming a realistic scenario for the emission of chemical species are presented and analyzed.
    Citation
    Brasseur, G.; De Rudder, A.; Tricot, C. (1985). Stratospheric response to chemical perturbations. , Journal of Atmospheric Chemistry, Vol. 3, Issue 2, 261-288, DOI: 10.1007/BF00210500.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/5865
    doi: http://dx.doi.org/10.1007/BF00210500
    scopus: 2-s2.0-0022264554
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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