Where Does Sublimation Take Place?

Sublimation is the transition of a substance directly from the solid phase to the gas phase without passing through the intermediate liquid phase (Table 4.8, Fig. 4.2). Sublimation is an endothermic phase transition that occurs at temperatures and pressures below the triple point of a chemical in the phase diagram.

Where does sublimation generally happen?

Sublimation occurs more readily when certain weather conditions are present, such as low relative humidity and dry winds. Sublimation also occurs more at higher altitudes, where the air pressure is less than at lower altitudes. Energy, such as strong sunlight, is also needed.

Where does sublimation occur in the water cycle?

Sublimation also contributes to water vapor in the air. Sublimation converts ice directly into water vapor, bypassing the liquid phase. This process only occurs when the temperature is very low or the pressure is extremely high. Sublimation can occur in the North and South pole from ice caps or ice sheets.