Effects of PSC (Polar Stratospheric Clouds) on the Photodissociation Processes of Atmospheric Trace Gases

DOI

Bibliographic Information

Other Title
  • 極成層圏雲(PSC)が大気微量成分の光解離過程に与える影響

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Description

Photodissociation rate of atmospheric minor constituents in antarctic winter was studied on the numerical model including spherical atmosphere effect and taking it into consideration that the scattering effect of PSC (Polar Stratospheric Clouds) on photodissociation. Diffusion of solar radiation into the lower stratosphere was suggested during antarctic winter period. Therefore significant photodissociation is expected even in winter time. For example, the ratio of the photodissociation rate at solar zenith angle θ0 = 90 ° to that at θ0 = 60 ° for Chappius band of ozone is 59.2 %. Within the value for PSC, 8 % increase of flux was found at wavelength λ =755 nm comparing the value for PSC free condition for θ0 = 80 °, and photodissociation rates of ozone (Chappius band), ClONO2, and HOCl showed a 2 % increase. However, a 2 % decrease in the rate was found for O2. Summarizing the results of calculation, the effect of PSC on the photo- dissociation process can advance even in antarctic winter.

Journal

  • Earozoru Kenkyu

    Earozoru Kenkyu 6 (3), 237-247, 1991

    Japan Association of Aerosol Science and Technology

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Details 詳細情報について

  • CRID
    1390282679319282432
  • NII Article ID
    130000779243
  • DOI
    10.11203/jar.6.237
  • COI
    1:CAS:528:DyaK38XisFSmtw%3D%3D
  • ISSN
    1881543X
    09122834
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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