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Oceanographer Dave Keeling
Dave Keeling accurately measured CO2 in the atmosphere on Mauna Loa in Hawaii and detected an annual rise. In 1960, CO2 in the atmosphere was 315ppm (parts per million) and the mean global temperature was 13.9°C.
Rights: NOAA, John Miller/ NOAA Mauna Loa Observatory archive
Published:31 January 2017Size: 4.37 MB