A two-dimensional model simulation of the EL Chichon volcanic eruption cloud

Details A two-dimensional model simulation of the EL Chichon volcanic eruption cloud A two-dimensional model simulation of the EL Chichon volcanic eruption cloud

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983georl..10.1053c&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 10, Nov. 1983, p. 1053-1056. NASA-supported research.

Physics

21

Aerosols, Atmospheric Models, Environment Simulation, Stratosphere, Two Dimensional Models, Volcanology, Backscattering, Gas Transport, Infrared Absorption, Optical Thickness, Photochemical Reactions, Radar Scattering, Sulfates, Sulfuric Acid

Scientific paper

Using a two-dimensional model of sulfate photochemistry, transport, and aerosol microphysics, a 2-year period following the eruptions of El Chichon have been simulated. Present calculations suggest that the residence time of the cloud in the stratosphere exceeds 2 years. The model reproduces the observed optical depth, lidar backscatter, and infrared extinction coefficients, if about 10 megatonnes of SO2 are injected. The major deficiency of the model is a somewhat too rapid transport.

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