atmospheric carbon dioxide Archives

This graphic indicates Earth’s atmospheric concentrations of CO2, expressed in parts per million (ppm), throughout the Cenozoic era from pre-industrial times back 65 million years. These are estimates based on proxies encoded in the geological record. The color-coded bars represent global temperature reconstructed from independent proxy data. The dashed line represents where CO2 concentrations stand today at 420 ppm. -- Credit: Gabe Bowen, University of Utah.

Geoscientists Map Changes In Earth’s Atmospheric CO2 Over The Past 66 Million Years

by Keith CowingFebruary 6, 2024February 6, 2024

Today atmospheric carbon dioxide is at its highest level in at least several million years thanks to widespread combustion of fossil fuels by humans over the past couple centuries.

atmospheric carbon dioxide

Geoscientists Map Changes In Earth’s Atmospheric CO2 Over The Past 66 Million Years

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