Differential SO2 column measurements of the Mt. Pinatubo volcanic plume

Details Differential SO2 column measurements of the Mt. Pinatubo volcanic plume Differential SO2 column measurements of the Mt. Pinatubo volcanic plume

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19..175h&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 19, Jan. 24, 1992, p. 175-178. Research supported by NASA.

Physics

13

Aerosols, Air Pollution, Plumes, Satellite Observation, Sulfur Dioxides, Volcanoes, Air Masses, Atmospheric Scattering, Caribbean Sea

Scientific paper

Differential SO2 column measurements of the Mt. Pinatubo volcanic plume were made from a NASA Electra aircraft flying in the Caribbean in July, 1991. The mean column content of the volcanic plume in the Caribbean was 25 micro-atm m (2.5 Dobson units) with periods of over 100 micro-atm m observed. The data indicate that an aerosol absorption or scattering effect occurs for long slant paths (low sun-elevation angles) and that 41 micro-atm m (an average obtained for 1-2 airmasses) is more representative of a true column average. Dispersion of the initial cloud from Mt. Pinatubo and a one-month SO2-to-sulfate conversion-time constant are in good agreement with the column contents found here.

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