Atmospheric carbon dioxide is the primary source of carbon in life on Earth and its concentration in Earth's pre-industrial atmosphere since late in the Precambrian was regulated by photosynthetic organisms and geological phenomena.
At about 55 km, the mesosphere begins. In the mesosphere, the temperature decreases with height again, because there is very little ozone to warm up the air. Finally, the mesopause divides the mesosphere from the thermosphere, which is the section of the atmosphere higher than 90 km. In this region, the temperature increases again. This time, it is molecular oxygen (O2) that causes the temperature increase.
As the altitude increases in the Troposphere, The air temperature decreases. When about 1 kilometer increases in altitude, the air cools about 6.5 degrees Celsius. And at the â¦very top of the Troposphere the air temperature stays the same at around -60 degrees Celsius.