Title	High-resolution carbon dioxide concentration record 650,000-800,000 years before present
Author	Lüthi, D.; Le Floch, M.; Bereiter, B.; Blunier, T.; Barnola, J.; Siegenthaler, U.; Raynaud, D.; Jouzel, J.; Fischer, H.; Kawamura, K.; Stocker, T.F.
Author Affil	Lüthi, D., University of Bern, Climate and Environmental Physics, Bern, Switzerland. Other: Université Joseph Fourier, France; Université de Versailles- Saint Quentin, France; Alfred Wegener Institute for Polar and Marine Research, Federal Republic of Germany
Source	Nature (London), 453(7193), p.379-382, . Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028- 0836
Publication Date	May 15, 2008
Notes	In English. 27 refs. GeoRef Acc. No: 284425. CRREL Acc. No: 62004840
Index Terms	geochemical cycles; measurement; paleoclimatology; Pleistocene; Antarctica-- Antarctic ice sheet; Antarctica--Dome C; Antarctica--Vostok Station; Antarctic ice sheet; Antarctica; carbon; carbon cycle; carbon dioxide; Cenozoic; concentration; Dome C; EPICA; geochemical cycle; ice cores; paleoatmosphere; paleoenvironment; Quaternary; reconstruction; Vostok Station; Wilkes Land
Abstract	Changes in past atmospheric carbon dioxide concentrations can be determined by measuring the composition of air trapped in ice cores from Antarctica. So far, the Antarctic Vostok and EPICA Dome C ice cores have provided a composite record of atmospheric carbon dioxide levels over the past 650,000 years. Here we present results of the lowest 200 m of the Dome C ice core, extending the record of atmospheric carbon dioxide concentration by two complete glacial cycles to 800,000 yr before present. From previously published data and the present work, we find that atmospheric carbon dioxide is strongly correlated with Antarctic temperature throughout eight glacial cycles but with significantly lower concentrations between 650,000 and 750,000 yr before present. (mod. journ. abst.)
URL	http://hdl.handle.net/10.1038/nature06949
Publication Type	journal article
Record ID	84100