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