EDUCATION (CBSE/UGC NET)

Detailed explanation-1: -Water vapor, carbon dioxide, methane, and other trace gases in Earth’s atmosphere absorb the longer wavelengths of outgoing infrared radiation from Earth’s surface. These gases then emit the infrared radiation in all directions, both outward toward space and downward toward Earth.

Detailed explanation-2: -Greenhouse gases in the atmosphere (such as water vapor and carbon dioxide) absorb most of the Earth’s emitted longwave infrared radiation, which heats the lower atmosphere.

Detailed explanation-3: -Greenhouse gases let short-wavelength radiation come into the Earth’s atmosphere from the sun. However, they absorb and re-radiate Earth’s long-wavelength radiation back towards to Earth’s surface keeping the temperature on Earth warm enough to inhabit.

Detailed explanation-4: -Increased concentrations of greenhouse gases, such as CO2, reduce the amount of outgoing longwave radiation (OLR) to space; thus, energy accumulates in the climate system, and the planet warms.

Detailed explanation-5: -Greenhouse gases A greenhouse gas is called that because it absorbs infrared radiation from the Sun in the form of heat, which is circulated in the atmosphere and eventually lost to space.