Global carbon dioxide emission to the atmosphere by volcanoes

Details Global carbon dioxide emission to the atmosphere by volcanoes Global carbon dioxide emission to the atmosphere by volcanoes

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gecoa..56.1765w&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 56, April 1992, p. 1765-1770. Research supported by NSF.

Mathematics

Logic

15

Air Land Interactions, Carbon Dioxide Concentration, Climate Change, Greenhouse Effect, Sulfur Dioxides, Volcanoes, Atmospheric Composition, Carbon Cycle, Earth Atmosphere

Scientific paper

Global emission of carbon dioxide by subaerial volcanoes is calculated, using CO2/SO2 from volcanic gas analyses and SO2 flux, to be 34 +/- 24 x 10 exp 12 g CO2/yr from passive degassing and 31 +/- 22 x 10 exp 12 g CO2/yr from eruptions. Volcanic CO2 presently represents only 0.22 percent of anthropogenic emissions but may have contributed to significant 'greenhouse' effects at times in earth history. Models of climate response of CO2 increases may be tested against geological data.

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