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Uploaded on Saturday 25 Feb 2012 by GRID-Arendal

Global atmospheric concentration of CO2

Year: 2005
From collection: Vital Climate Graphics
Author: UNEP/GRID-Arendal
Atmospheric CO2 has increased from a pre-industrial concentration of about 280 ppmv to about 367 ppmv at present (ppmv= parts per million by volume). CO2 concentration data from before 1958 are from ice core measurements taken in Antarctica and from 1958 onwards are from the Mauna Loa measurement site. The smooth curve is based on a hundred year running mean. It is evident that the rapid increase in CO2 concentrations has been occurring since the onset of industrialization. The increase has closely followed the increase in CO2 emissions from fossil fuels.
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