The tropopause marks the critical boundary separating the troposphere from the stratosphere above. This thin transition layer is defined by the point where air stops cooling with altitude and begins to remain constant. It acts as a thermodynamic lid, trapping ...
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Approximately 90 percent of the total atmospheric water vapor is found in the troposphere. This concentration occurs because moisture enters the air through evaporation and transpiration at the Earth’s surface. Gravity and the cooling effect of altitude keep this water ...