The figure shows the total global concentration of Kyoto protocol Gases (KPG), gases under the Montreal Protocol (MPG) and non-protocol related gases (NPG). NPGs contribute negatively, as they have an overall cooling effect, whereas the other gases contribute positively.
The threshold concentration range is based on a 50% probability of exceeding 2 degree Celsius temperature increase, given different models and scenarios.
Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Earth,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Italy,Kazakhstan,Kosovo (UNSCR 1244/99),Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia (FYR),Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,Russia,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom
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The figure covers the world-wide observed concentration.
Data expressed in CO2-equivalents (see CSI013 justification for explanation). Note that the trend in the figure is much shorter with respect to the one for Kyoto gases, due to the unavailability of long-term data for aerosols and ozone.