Increased atmospheric carbon dioxide concentrations are expected to cause cooling of the lower stratosphere.

And those are the cases where the effects on atmospheric carbon are relatively well understood.

Forests continue to absorb atmospheric carbon for centuries if left undisturbed.

Disturbed soils are an additional major source of atmospheric carbon.

Trees store atmospheric carbon in their wood using photosynthesis.

Therefore a reasonably stable level of atmospheric carbon results from its use as a fuel.

The atmospheric carbon started out much higher, the continents and oceans were in a different arrangement, etc.

The end result is more atmospheric carbon sequestered in the deep ocean, which acts as a feedback on the cooling.

Plants take up C by fixing atmospheric carbon through photosynthesis.

Sequestering the atmospheric carbon would likely solve the temperature problem as well.