Green house effect is warming due to

Greenhouse effect is warming due to an increase in temperature due to an increase in carbon dioxide concentration in atmosphere.
The greenhouse effect is the way in which heat is trapped close to Earth's surface by “greenhouse gases”.
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. The first quantitative prediction of global warming is due to a hypothetical doubling of atmospheric carbon dioxide.