Daily global carbon dioxide (CO2) emissions. Illustration of a pile of metric ton spheres of CO2 gas engulfing New York City, New York, USA. The Statue of Liberty is at left. Each sphere is 10 metres in diameter (535 cubic metres) and represents greenhouse gas-equivalent volumes of CO2 gas. A metric ton (tonne) is 1000 kilograms. In 2012, over 39 billion metric tons of carbon dioxide was added to the atmosphere worldwide. One day of global emissions would produce this pile of these spheres 3.7 kilometres high and 7.4 kilometres across. These figures are from 2012. For an alternative view of this pile of CO2, see image C026/1031.