Mauna Loa and South Pole Difference with Fossil Fuel

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Description:
Black Dots: Difference of the monthly average atmospheric carbon dioxide concentration at Mauna Loa Observatory, Hawaii and South Pole, Antarctica versus time where CO₂ concentration is in parts per million in the mole fraction (p.p.m.).

Black Curve: Spline fit to the CO₂ data.

Red Curve: Fit to the CO₂ data in the form of A + B·FF where A and B are constants that are adjusted to optimally fit the data and where FF is the global fossil fuel emissions in PgCyr^-1. The values of the constants are A = -0.82 ppm CO₂ and B = 0.513 ppm CO₂/(PgCyr^-1).

Data from Scripps CO₂ Program.