Variations in carbon dioxide concentrations in Earth's atmosphere

This graph, based on key ice core data sets and recent monitoring programs, shows the variations in concentration of carbon dioxide (CO2) in the atmosphere during the last 400,000 years.

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Robert A. Rohde
Global Warming Art

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Teaching Tips

Teaching Tips

Discussion of this visualization should include information about how ice cores are collected and analyzed as well as the Mauna Loa Observatory data.

Also link to Milankovitch orbital cycles, which play an important role in climate change over millennial scales:

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