Global Carbon Dioxide - 400 ppm

Thursday 9 May 2013 the daily average concentration of carbon dioxide in the atmosphere as measured at Mauna Loa in Hawaii reached the unsettling milestone of 400 parts per million.If you extracted the carbon dioxide from the atmosphere and brought it all to one place at standard pressure and 15 °C this is the volume it would take up. The blue cube is 105 km high (65.5 miles). The pink volume is 45 km high (28 miles).

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