Physics
Scientific paper
Nov 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983georl..10.1045v&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 10, Nov. 1983, p. 1045-1048. NASA-supported research.
Physics
6
Air Sampling, Atmospheric Composition, Stratosphere, Sulfur Dioxides, Volcanoes, Aerosols, Air Pollution, Airborne Equipment, Atmospheric Boundary Layer, Gas Chromatography, Sulfuric Acid
Scientific paper
Samples of stratospheric trace gases were obtained on eight flights of NASA high-altitude aircraft from April 16 through December 13, 1982. The sampling occurred at altitudes from 15 to 22 km, latitudes from 23 to 52 deg N, and longitudes from 108 to 130 deg W. The cryogenically concentrated samples were analyzed by gas chromatography for SO2, a primary precursor of the gas-to-particle conversion process. The measured mixing ratio of SO2 varied between 8 and 132 pptv. Evidence from aerosol measurements indicates that a few of our early samples may have been collected in the fringes of the volcanic cloud from El Chichon. Samples obtained on some later flights may have been from the eruption cloud but were taken at times when most of the volcanically injected SO2 should have been converted to H2SO4.
Condon E. P.
Inn Edward C. Y.
Kritz M. A.
Tabor K. D.
Vedder James F.
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