Atmospheric methane and nitrous oxide of the late Pleistocene from Antarctic ice cores

Spahni, Renato; Chappellaz, Jérôme; Stocker, Thomas F.; Loulergue, Laetitia; Hausammann, Gregor; Kawamura, Kenji; Flückiger, Jacqueline; Schwander, Jakob; Raynaud, Dominique; Masson-Delmotte, Valérie; Jouzel, Jean (2005). Atmospheric methane and nitrous oxide of the late Pleistocene from Antarctic ice cores. Science, 310(5752), pp. 1317-1321. American Association for the Advancement of Science 10.1126/science.1120132

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The European Project for Ice Coring in Antarctica Dome C ice core enables us to extend existing records of atmospheric methane (CH4) and nitrous oxide (N2O) back to 650,000 years before the present. A combined record of CH4 measured along the Dome C and the Vostok ice cores demonstrates, within the resolution of our measurements, that preindustrial concentrations over Antarctica have not exceeded 773 ± 15 ppbv (parts per billion by volume) during the past 650,000 years. Before 420,000 years ago, when interglacials were cooler, maximum CH4 concentrations were only about 600 ppbv, similar to lower Holocene values. In contrast, the N2O record shows maximum concentrations of 278 ± 7 ppbv, slightly higher than early Holocene values.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Climate and Environmental Physics
08 Faculty of Science > Physics Institute

UniBE Contributor:

Spahni, Renato, Stocker, Thomas, Hausammann, Gregor, Schwander, Jakob

Subjects:

500 Science > 530 Physics

ISSN:

0036-8075

Publisher:

American Association for the Advancement of Science

Language:

English

Submitter:

BORIS Import 2

Date Deposited:

19 Aug 2021 08:22

Last Modified:

05 Dec 2022 15:52

Publisher DOI:

10.1126/science.1120132

BORIS DOI:

10.48350/158265

URI:

https://boris.unibe.ch/id/eprint/158265

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