Natural and anthropogenic variations in methane sources during the past two millennia

C. J. Sapart (), G. Monteil, M. Prokopiou, R. S. W. van de Wal, J. O. Kaplan, P. Sperlich, K. M. Krumhardt, C. van der Veen, S. Houweling, M. C. Krol, T. Blunier, T. Sowers, P. Martinerie, E. Witrant, D. Dahl-Jensen and T. Röckmann
Additional contact information
C. J. Sapart: Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Princetonplein 5, 3584CC Utrecht, The Netherlands
G. Monteil: Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Princetonplein 5, 3584CC Utrecht, The Netherlands
M. Prokopiou: Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Princetonplein 5, 3584CC Utrecht, The Netherlands
R. S. W. van de Wal: Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Princetonplein 5, 3584CC Utrecht, The Netherlands
J. O. Kaplan: ARVE Group, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 2, 1015 Lausanne, Switzerland
P. Sperlich: Center for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen, Denmark
K. M. Krumhardt: ARVE Group, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 2, 1015 Lausanne, Switzerland
C. van der Veen: Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Princetonplein 5, 3584CC Utrecht, The Netherlands
S. Houweling: Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Princetonplein 5, 3584CC Utrecht, The Netherlands
M. C. Krol: Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Princetonplein 5, 3584CC Utrecht, The Netherlands
T. Blunier: Center for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen, Denmark
T. Sowers: Earth and Environmental Systems Institute, Penn State University, University Park
P. Martinerie: UJF – Grenoble 1/CNRS, Laboratoire de Glaciologie et Géophysique de l’Environnement (LGGE), UMR 5183, F-38041 Grenoble, France
E. Witrant: UJF – Grenoble 1/CNRS, Grenoble Image Parole Signal Automatique (GIPSA-lab), UMR 5216, BP 46, F-38402 St Martin d’Hères, France
D. Dahl-Jensen: Center for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen, Denmark
T. Röckmann: Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Princetonplein 5, 3584CC Utrecht, The Netherlands

Nature, 2012, vol. 490, issue 7418, 85-88

Abstract: Centennial-scale variations in methane carbon isotope ratios are attributed to changes in pyrogenic and biogenic sources that can be correlated with anthropogenic activities, such as varying levels of biomass burning during the period of the Roman empire and the Han dynasty, and changes in natural climate variability.

Date: 2012
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DOI: 10.1038/nature11461

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