Atmospheric Methane and Nitrous Oxide of the Late Pleistocene from Antarctic Ice Cores-Reference-Cited by-同舟云学术

Atmospheric Methane and Nitrous Oxide of the Late Pleistocene from Antarctic Ice Cores

Published:2005-11-25 Issue:5752 Volume:310 Page:1317-1321
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Spahni Renato¹²³,Chappellaz Jérôme¹²³,Stocker Thomas F.¹²³,Loulergue Laetitia¹²³,Hausammann Gregor¹²³,Kawamura Kenji¹²³,Flückiger Jacqueline¹²³,Schwander Jakob¹²³,Raynaud Dominique¹²³,Masson-Delmotte Valérie¹²³,Jouzel Jean¹²³

Affiliation:

1. Climate and Environmental Physics, Physics Institute, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.

2. Laboratoire de Glaciologie et Géophysique de l'Environnement (LGGE, CNRS-UJF), CNRS, 54 Rue Molières, 38402 St. Martin d'Hères, Grenoble, France.

3. Institut Pierre Simon Laplace/Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS 1572, CE Saclay, Orme des Merisiers, 91191 Gif-sur-Yvette, France.

Abstract

The European Project for Ice Coring in Antarctica Dome C ice core enables us to extend existing records of atmospheric methane (CH 4 ) and nitrous oxide (N 2 O) back to 650,000 years before the present. A combined record of CH 4 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 CH 4 concentrations were only about 600 ppbv, similar to lower Holocene values. In contrast, the N 2 O record shows maximum concentrations of 278 ± 7 ppbv, slightly higher than early Holocene values.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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