Vostok ice core study

The Vostok ice core was drilled from a site considered one of the least hospitable sites on Earth, since its altitude is 3,500 meters and its average yearly temperature is minus 55° C. The analysis of this ice core provides a record of the atmosphere during the last four climatic cycles. For the first time, researchers were able to establish, over such a long period, a simultaneous record of temperature variations, carbon dioxide (CO2), methane (CH4) and oxygen proportions in the atmosphere, of the quantity of dust blown from the desert and aerosols from sea spray.

Citation: 
http://www.cnrs.fr/cw/en/pres/compress/mist030699.html
English

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