What substance in the upper atmosphere is important to temperature changes in the upper atmosphereic layers??

Question

What substance in the upper atmosphere is important to temperature changes in the upper atmosphereic layers??

Answer 1

Wate vapor and dust.

Answer 2

There is decrease in temperature with the respective increase in altitude in troposphere while there is an increase in  temperature is being observed in stratoposhere due to presence of stratoshpheric ozone.

Futher in mesoshpere temperature is again decreased but after the mesoshphere, thermosphere or ionoshphere lies. In this region gases remains in their ionic state and therefore in this region temperature again increases continuously.