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Atmospheric concentration of Carbon Dioxide (ppm): The figure shows the global atmospheric concentration of carbon dioxide up to 2010. The value for 2011 is 390.9 ppm but is not included in the chart to ensure consistency with the other greenhouse gas figures.
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Atmospheric concentration of CH4 (ppb): The figure shows the atmospheric concentration of CH4
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Atmospheric concentration of CO2 (ppm): The figure shows the atmospheric concentration of CO2
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Atmospheric concentration of Methane (ppb): The figure shows the global atmospheric concentration of methane up to 2010.
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Atmospheric concentration of N2O (ppb): The concentrations of the individual GHGs under the Kyoto protocol have reached new highs in 2009 The figure shows the atmospheric concentration of N2O
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Atmospheric concentration of Nitrous Oxide (ppb): The figure shows the global atmospheric concentration of nitrous oxide up to 2010.
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Atmospheric greenhouse gas concentrations (CSI 013) - Assessment published Nov 2010: The global average concentrations of various greenhouse gasses in the atmosphere reached their highest levels ever recorded, and continue increasing. The combustion of fossil fuels from human activities and land-use changes are largely responsible for this increase. The concentration in 2008 of the six greenhouse gases (GHG) included in the Kyoto Protocol has reached 438 ppm CO 2 equivalent, which is an increase of 160 ppm compared to the pre-industrial level. Considering all GHGs (incl. ozone and various cooling aerosols), the concentration has reached a value of 399 ppm CO 2 equivalents in 2008, which is 121 ppm higher than in pre-industrial times. The concentration of CO 2 -the most important greenhouse gas- has reached in 2008 a level of 385 ppm, and in 2009 387 ppm. This is an increase of nearly 110 ppm compared to the pre-industrial level. Without climate policy, the overall concentration of the six Kyoto gasses is projected to increase up to 638-1360 ppm CO 2 -equivalent by 2100, whereas the concentration of all GHGs may increase up to 608-1535 ppm CO 2 -equivalent. The global atmospheric GHG concentration of 450 ppm CO 2 -equivalent could already become exceeded up 2015 (depending on climate policy and definitions)
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Atmospheric greenhouse gas concentrations (CSI 013) - Assessment published Jan 2013: The global average concentrations of various greenhouse gases in the atmosphere have reached the highest levels ever recorded, and concentrations are increasing. The combustion of fossil fuels from human activities and land-use changes are largely responsible for this increase. The concentration of all GHGs, including cooling aerosols that are relevant in the context of the 2 o C temperature target, reached a value of 403 ppm CO 2 equivalents in 2010, exceeding the 400 ppm for first time. The concentration in 2010 of the six greenhouse gases (GHG) included in the Kyoto Protocol has reached 444 ppm CO 2 equivalent, an increase of 165 ppm (around +60 %) compared to pre-industrial levels. The concentration of CO 2 , the most important greenhouse gas, reached a level of 389 ppm by 2010, and further increased to 391 ppm in 2011. This is an increase of approximately 112 ppm (around +40 %) compared to pre-industrial levels.
Located in Data and maps › Indicators › Atmospheric greenhouse gas concentrations
Atmospheric greenhouse gas concentrations (CSI 013) - Assessment published Jan 2012: The global average concentrations of various greenhouse gases in the atmosphere have reached the highest levels ever recorded, and concentrations continue to increase. The combustion of fossil fuels from human activities and land-use changes are largely responsible for this increase. The concentration of all GHGs, including cooling aerosols that are relevant in the context of the 2 o C temperature target, reached a value of 399 ppm CO 2 equivalents in 2009. The concentration in 2009 of the six greenhouse gases (GHG) included in the Kyoto Protocol has reached 439 ppm CO 2 equivalent, an increase of 160 ppm (around +58%) compared to pre-industrial levels. The concentration of CO 2 , the most important greenhouse gas, reached a level of 386 ppm by 2009, and further increased to 389 ppm in 2010. This is an increase of approximately 110 ppm (around +39%) compared to pre-industrial levels.
Located in Data and maps › Indicators › Atmospheric greenhouse gas concentrations
Climate change — time to act: Climate change is a real and current threat. To avoid major irreversible impacts on society and ecosystems, we must act now.
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