Nature 345, 127 - 131 (10 May 1990); doi:10.1038/345127a0

Ice-core record of atmospheric methane over the past 160,000 years

J. Chappellaz^*, J. M. Barnola^*, D. Raynaud^*, Y. S. Korotkevich ^† & C. Lorius^*

^*Laboratoire de Glaciologie et Géophysique de I'Environnement, BP 96, 38402 St Martin d'Hères Cedex, France
^†Arctic and Antarctic Research Institute, Beringa Street 38, 199226 Leningrad, USSR

Methane measurements along the Vostok ice core reveal substantial changes over the past 160,000 years which are associated with climate fluctuations. These results point to changes in sources of methane and also show that methane has probably contributed, like carbon dioxide, to glacial-interglacial temperature changes.

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