Volcanic ash over Arizona in the spring of 1982 - Astronomical observations

Details Volcanic ash over Arizona in the spring of 1982 - Astronomical observations Volcanic ash over Arizona in the spring of 1982 - Astronomical observations

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983sci...220..300l&link_type=abstract

Science, vol. 220, Apr. 15, 1983, p. 300-302.

Physics

Optics

10

Ashes, Atmospheric Optics, Volcanoes, Arizona, Atmospheric Attenuation, Clouds (Meteorology), Insolation

Scientific paper

It is noted that astronomical observations in Arizona recorded the passage of one, and possibly more, volcanic dust clouds between January and June 1982. On May 15, the increase in extinction in visible wavelengths at Tucson exceeded 40% or 0.4 in optical depth. At Flagstaff (325 kilometers to the north), the increase in extinction on that day was 25%. A detailed time history of atmospheric extinction is presented, together with evidence for nongray absorption from the cloud.

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