http://www.co2clock.orgCounter showing current concentrations of carbon dioxide in the atmosphere with a description of their methodology.Clock reading current atmospheric CO2 concentrations in ppm.
CO2 Clock data derived from in situ air measurements of of atmospheric CO2 concentrations (in ppm) as measured at Mauna Loa Observatory, Hawaii.
at the Scripps Institution of Oceanography.
Data Citation: C. D. Keeling, S. C. Piper, R. B. Bacastow, M. Wahlen, T. P. Whorf, M. Heimann, and H. A.ppmatmospheric concentrationsCO2carbonstabilizationemissionsgreenhouse gasglobal warmingclimate changeKeeling curveMauna Loa
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