| 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 |