The main candidate for that mechanism is Ca evaporite deposition. Hence, in a steady state ocean, it is expected that organic matter drawdown is always accompanied by evaporite formation. The figure caption above explains the origin of the tropopause and the mesopause. The only major T pattern that needs explaining is that the T is highest on the Earth's surface. The reason for the cooling is that the Earth's atmosphere is heated from below by re-radiation of sunlight in the IR range.
Air also cools as it rises and expand.
Heating and rise of the air mass at the equatorial region and cooling and sinking at the poles. The Hadley breaks into three zone because of the instability of convective circulation over the entire hemisphere. Above are the prevailing winds. That is due to Coriolis modification of the down-segment of the Hadley cells. At each stage of atmosphere development and the transition between them, outline the key changes taking place that led to changes in atmospheric chemical composition.