FROM Wikipedia
The greenhouse effect is related to the complex processes of absorption, circulation and emission of energy by the planet's climate system. The increased concentration of greenhouse gases in the atmosphere has caused irreversible changes in the planet's climate dynamics.
The greenhouse effect on Earth is defined as: "The infrared radiative effect of all infrared absorbing constituents in the atmosphere. Greenhouse gases (GHGs), clouds, and some aerosols absorb terrestrial radiation emitted by the Earth's surface and elsewhere in the atmosphere."[16]: 2232
The enhanced greenhouse effect describes the fact that by increasing the concentration of GHGs in the atmosphere (due to human action), the natural greenhouse effect is increased.
The existence of the greenhouse effect (while not named as such) was proposed as early as 1824 by Joseph Fourier.[11] The argument and the evidence were further strengthened by Claude Pouillet in 1827 and 1838. In 1856 Eunice Newton Foote demonstrated that the warming effect of the sun is greater for air with water vapour than for dry air, and the effect is even greater with carbon dioxide.[12][13] The term greenhouse was first applied to this phenomenon by Nils Gustaf Ekholm in 1901.[14][15]
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