what causes temperature to decrease in the mesosphere
Within the mesosphere, temperature decreases with increasing height. This is due to decreasing solar heating and increasing cooling by CO 2 radiative emission. The top of the mesosphere, called the mesopause, is the coldest part of Earth's atmosphere.Temperatures in the upper mesosphere fall as low as â100 Â°C (173 K; â148 Â°F), varying according to latitude and season.he top of the mesosphere, called the mesopause, is the coldest part of Earth's atmosphere. Temperatures in the upper mesosphere fall as low as â100 Â°C (173 K; â148 Â°F), varying according to latitude and season.