Figure : spm-1_13mar-07

Atmospheric Concentrations of CO2, CH4 and N2O

Figure 2.4

Joint Institute for the Study of the Atmosphere and Oceans JISAO
Sarah Doherty

This figure appears in chapter 2 of the Climate Science Special Report: The Fourth National Climate Assessment: Volume I report.

Atmospheric concentrations of CO2 (top), CH4 (middle), and N2O (bottom) over the last 800,000 years (left panels) and for 1750­–2015 (right panels). Measurements are shown from ice cores (symbols with different colors for different studies) and for direct atmospheric measurements (red lines). (Adapted from IPCC 2007,c54b9473-cdc3-4f22-97a8-4df5253f9682 Figure SPM.1, © IPCC, used with permission; data are from ).

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This figure was created on November 21, 2016.

This figure was submitted on August 30, 2017.

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