Decrease in Carbon Isotope Ratios
http://www.ipcc.ch/publications_and_data/ar4/wg1/en/figure-6-2.html

Intergovernmental Panel on Climate Change (IPCC)


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This three-panel figure is an infographic showing how carbon and oxygen isotope ratios, temperature, and carbonate sediments have changed during the Palaeocene-Eocene Thermal Maximum. The figure caption provides sources to scientific articles from which this data was derived. A graphic visualization from the Intergovernmental Panel on Climate Change shows the rapid decrease in carbon isotope ratios that is indicative of a large increase in the atmospheric greenhouse gases CO2 and CH4, which was coincident with approximately 5C of global warming.


Subject: Environmental Science:Global Change and Climate, Geoscience:Atmospheric Science:Climate Change:Paleoclimate records, Environmental Science:Global Change and Climate:Climate Change:Paleoclimate records, Geoscience:Atmospheric Science:Climatology
Grade Level: College Upper (15-16), College Lower (13-14)
Theme: Teach the Earth:Enhancing your Teaching:NGSS, Teach the Earth:Course Topics:Environmental Science, Atmospheric Science, Teach the Earth:Incorporating Societal Issues:Climate Change