Keeling Curve, as of 2020

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Monthly average atmospheric carbon dioxide concentration versus time at Mauna Loa Observatory, Hawaii. The curve is a spline through the data. Data from Scripps CO2 Program. Up to date versions of this graph can be found at:

Originally uploaded in CLEAN:Teaching Climate and Energy:Teaching Climate.

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Uploaded: Mar2 20

Last Modified: 2020-03-02 11:49:17
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Image and data from Scripps Institution of Oceanography
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