Under what weather conditions, the atmosphere has the strongest absorption of ground radiation.

Clouds in the sky are equivalent to covering the earth with a thick quilt. Clouds will reflect the heat emitted by the earth to the sky back to the earth, so the speed of heat loss will be greatly reduced, thus greatly reducing the temperature drop. Because there are clouds on cloudy days and not on sunny days, the temperature drop at night is far less than that on sunny days.

Clouds are abundant on cloudy days, humidity in the air is high, and atmospheric inverse radiation is strong. In other words, the light hitting the ground is easily reflected by the clouds.

On the contrary, on sunny days, the air is clean, there are fewer clouds, less reflected solar radiation and more reaching the ground. When the ground radiation is strengthened, the atmospheric radiation is also strengthened, and the atmospheric reverse radiation will also be strengthened.