water vapor helps trap heat, and is a far the strongest of the major greenhouse gases, contributing 36–72 percent of the greenhouse effect.
water vapor helps trap heat, and is a far the strongest of the major greenhouse gases, contributing 36–72 percent of the greenhouse effect.
greenhouse effect:45
greenhouse effect
by their percentage contribution to the greenhouse effect on earth the four major gases are: water vapor, 36–70% carbon dioxide, 9–26% methane, 4–9% ozone, 3–7% it is not possible to assign a specific percentage to each gas because the absorption and emission bands of the gases overlap (hence the ranges given above).