Climate's carbonate cypher

Philip Newton

Nature, 1997, vol. 390, issue 6659, 445-445

Abstract: Clues to our past climate can be found in marine sediments. The ratios of different oxygen and carbon isotopes within the buried shells of marine creatures depend on water temperature, among other things. But it now seems that they also depend on the total concentration of carbonate in sea water. For many periods, these palaeoclimatic codes will now have to be deciphered again — lowering our estimate of temperatures during the last ice age, for example.

Date: 1997
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DOI: 10.1038/37233

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