Green House Effect

Green House Effect

If an ideal thermally conductive was the same distance from the Sun as the Earth, it would have an expected blackbody temperature of 5.3 °C. However, since the Earth reflects about 30%or 28% of the incoming sunlight, the planet's actual blackbody temperature is about -18 or -19 °C, about 33°C below the actual surface temperature of about 14 °C or 15 °C. The mechanism that produces this difference between the actual temperature and the blackbody temperature is due to the atmosphere and is known as the greenhouse effect.

Arecent warming of the Earth's surface and lower atmosphere is believed to be the result of a strengthening of the greenhouse effect mostly due to human-produced increases in atmospheric greenhouse gases.

The greenhouse effect is a process by which radiative energy leaving a planetary surface is absorbed by some atmospheric gases, called they transfer this energy to other components of the atmosphere, and it is re-radiated in all directions, including back down towards the surface. This transfers energy to the surface and lower atmosphere, so the temperature there is higher than it would be if direct heating by solar radiation were the only warming mechanism.

This mechanism is fundamentally different from that of an actual, which works by isolating warm air inside the structure so that heat is not lost by The greenhouse effect was discovered by in 1824, first reliably experimented on by in 1858, and first reported quantitatively by in 1896.