Greenhouse Gases...
increase the absorption of radiant heat
|
Gas |
1978 |
2005 |
% increase |
| carbon dioxide CO2 |
337 ppm |
375 ppm |
11.3 % |
| methane CH4 |
1.54 ppm |
1.85 ppm |
20 % |
| nitrous oxide N2O |
302 ppb |
319 ppb |
5.6 % |
| chloroflurocarbons CF4 |
40 ppt |
80 ppt |
50 % |
| sulfur hexaflourides
SF6 |
0 ppt |
5.21 ppt |
521
% |
reference -
Current Greenhouse Gas Concentrations |