Glacial-to-interglacial variations in the carbon isotopic composition of atmospheric CO2

Details Glacial-to-interglacial variations in the carbon isotopic composition of atmospheric CO2 Glacial-to-interglacial variations in the carbon isotopic composition of atmospheric CO2

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992natur.357..461m&link_type=abstract

Nature (ISSN 0028-0836), vol. 357, no. 6378, June 11, 1992, p. 461-466. Research supported by DOE and NSF.

Computer Science

27

Atmospheric Composition, Carbon Dioxide Concentration, Carbon Isotopes, Environmental Chemistry, Glaciology, Abundance, Biomass, Ocean Surface, Paleoclimatology, United States

Scientific paper

Samples of the C4 shrub Atriplex confertifolia recovered from packrat middens in the western United States provide a record of changes in the C-13/C-12 ratio of atmospheric carbon dioxide. During the last ice age, atmospheric CO2 was isotopically light relative to interglacial periods, a result attributed to a combination of factors including reduced terrestrial biomass and decreased productivity of the polar ocean.

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