Pliocene Climate Lessons

Robinson, Marci
May 2011
American Scientist;May/Jun2011, Vol. 99 Issue 3, p228
Academic Journal
The article discusses climate change updates as of May 2011. A mean annual global temperature increase of between 1.1 degrees and 6.4 degrees Celsius by the end of the 21st century was predicted by the Intergovernmental Panel on Climate change (IPCC), using general circulation model (GCM) experiments. Climatologists that want to model future climate are using chemical ratios preserved in tiny marine fossils. In order to identify past warm periods, scientists use the marine oxygen isotope record, which is based on the ratio of two oxygen isotopes preserved in the shells of microfossils.


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