Implications of stratospheric aerosol measurements for models of aerosol formation and evolution

Details Implications of stratospheric aerosol measurements for models of aerosol formation and evolution Implications of stratospheric aerosol measurements for models of aerosol formation and evolution

Jan 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981georl...8...23t&link_type=abstract

Geophysical Research Letters, vol. 8, Jan. 1981, p. 23-25.

Physics

6

Aerosols, Stratosphere, Sulfur Compounds, Ammonia, Atmospheric Models, Carbon Compounds, Mixing, Vertical Distribution

Scientific paper

Calculations of the distribution of stratospheric sulfur gases and of stratospheric aerosols are compared with measurements obtained in Alaska during July 1979. Generally, the measurements are reasonably consistent with the model results. COS is the major sulfur-bearing gas in the stratosphere while CS2 plays a lesser role in the formation of sulfate aerosols. Ammonia, which earlier measurements suggested was a major aerosol constituent, is found to be a contaminant, so models without ammonia chemistry may be justified. The model and the measurements suggest that stratospheric sulfuric acid aerosols nucleate just above the tropopause, but they are older and have grown to larger sizes at higher altitudes.

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