The following is a scientific explanation of 'Greenhouse Gas effect':

Infrared (IR) active gases, principally water vapor (H2O), carbon dioxide (CO2), and ozone (O3), naturally present in the Earth’s atmosphere, absorb thermal IR radiation emitted by the Earth’s surface and atmosphere.

The atmosphere is warmed by this mechanism and, in turn, emits IR radiation, with a significant portion of this energy acting to warm the surface and the lower atmosphere. As a consequence the average surface air temperature of the Earth is about 30° C higher than it would be without atmospheric absorption and reradiation of IR energy.

[Henderson-Sellers and Robinson, 1986; Kellogg, 1996; Peixoto and Oort, 1992].

This phenomenon is known as the 'greenhouse effect', and the IR active gases responsible for the effect are likewise referred to as 'greenhouse gases.' The rapid increase in atmospheric borne concentrations of greenhouse gases since the beginning of the industrial period has given rise to concern over trapped heat increasing atmospheric and surface temperatures. Increased temperatures are associated with climate change.

Climate change, wider and more frequent temperature fluctuations, higher water levels, frequent and increasingly more violent storms, desertification in some regions and increased rainfall in others, will strain existing infrastructure, material and financial markets.

The overall results of the greenhouse effect and resultant warming planet are understood. What happens afterwards is a guess. Unfortunately, once the greenhouse effect starts it will be increasingly more difficult to slow or shut down.

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