Concentration of greenhouse gases in the atmosphere

An increased concentration of greenhouse gases leads to an increase in the average temperature on Earth, resulting in shifting of the climatic belts and changes in extreme weather phenomena. And because most greenhouse gases remain in the atmosphere for a very long time, the temperature on Earth will continue to rise for a long time after stabilisation of the concentration of greenhouse gases. But the lower the level at which the concentrations are stabilised, the lower the overall temperature rise will eventually be. The increasing atmospheric concentration of greenhouse gases in the 20th and early 21st centuries, with more than 95 % certainty, assigns the IPCC mainly to human activities such as the use of fossil fuels, agriculture and changes in land use (e.g. deforestation). And even though most greenhouse gases are emitted in the northern hemisphere, the concentration of greenhouse gases around the world is almost the same. This is because their stay time in the atmosphere is sufficient to achieve a homogeneous mixture. This indicator follows the evolution of greenhouse gas concentrations in the global atmosphere.