Abstract
Over the last 730,000 years (the Brunhes geomagnetic epoch), the earth’s climate has alternated between ice ages and interglacial conditions. 9 interglacial stages have been recognized in the 6 0 record, but the total duration of warm conditions, roughly similar to those of today, did not represent more than 10% of the time. Glacial conditions are characterized by temperature colder than today and extensive dryness (CLIMAP, 1976). More recently, studies from ice cores and from deep sea sediments have indicated that the global carbon cycle was also very sensitive to climatic changes. In this paper we shall review the evidence of the variability of the carbon cycle and discuss the various theories proposed to explain this variability.
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Duplessy, JC. (1986). C02 Air-Sea Exchange during Glacial Times: Importance of Deep Sea Circulation Changes. In: Buat-Ménard, P. (eds) The Role of Air-Sea Exchange in Geochemical Cycling. NATO ASI Series, vol 185. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-4738-2_10
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DOI: https://doi.org/10.1007/978-94-009-4738-2_10
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