Computer Science
Scientific paper
Jul 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987e%26psl..84..197m&link_type=abstract
Earth and Planetary Science Letters (ISSN 0012-821X), vol. 84, no. 2-3, July 1987, p. 197-203. Research supported by the Univers
Computer Science
6
Beryllium Isotopes, Concentration (Composition), Greenland, Land Ice, Particle Precipitation, Trace Elements, Atmospheric Circulation, Atmospheric Models, Solar Activity, Strontium Isotopes, Troposphere
Scientific paper
The Sr-90 air concentration deposition pattern data were used to develop a model of Be-10 deposition within the subarctic and arctic regions and to predict the deposition flux of Be-10 at the Dye-3 site on the Greenland ice cap. The Be-10 deposition fluxes predicted by the model were in good agreement with the Be-10 concentration measurements in Dye-3 firn and ice. Inversion of the Greenland ice core Be-10 concentration record with the aid of the model indicates (1) that the average precipitation rate in the subarctic and arctic was lower than the present rate during the Maunder minimum of solar activity and higher than the present rate during the Wolf and Sporer solar activity minima, and (2) that during the Wisconsin-Holocene transition the average precipitation rate in the subarctic and arctic was about one third the present precipitation rate.
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