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By P Gosselin on 4. August 2016
Share this…FacebookTwitterBy Kenneth Richard The HadCRUT global temperature dataset that the IPCC references contains instrumental records that date back to the year 1850. Precise CO2 data (measured in tenths of parts per million) from thousands of years ago can be found in Antarctic ice cores, with direct measurements (Mauna Loa) available since the 1950s. In […]