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.


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