PowerPoint Presentation

SVP over Liquid and Ice

SVP over ice is less than over water because sublimation takes more energy than evaporation
If water surface is not flat, but instead curves like a cloud drop, then the SVP difference is even larger
So at equilibrium, more vapor resides over cloud droplets than ice crystals

Ahrens, Meteorology Today 5th Ed.


	THIS IS AN IMPORTANT POINTÉtake time to explain the
	SVP over ice is LESS THAN SVP over liquid because it takes more energy for water to go from solid to vapor phase than liquid to vapor phase.
	Difference is largest around -15 to -20 C