text: Since March 1958, the d regular mtningar of carbon dioxide on Mauna Loa pbrjades, the content of the air cat with about (26%). Similar mtningar from a large number of platforms (ground stations, aircraft and satellites) have shown that Mauna Loa mtningarna broadly seen as representative for jordatmosfren as a whole. CO 2 content must is now about 396 ppmv (parts per million by volume). The increase since March 1958 amounts to 81 ppmv, and is equivalent to about 169 billion tonnes of carbon (169 Gtonnes). As framgr of Figure 1 The increase was monotonous and growing, and The increase in the last 20 clean has been more than double compared to 1960, and 1970. Fig. 1: Carbon dioxide concentration in ppm (v) at Mauna Loa from the period March 1958 March 2013 Klla NOAA http://www.esrl.noaa.gov/gmd/ccgg/trends/