ESS11
Prof. Jin-Yi Yu
How Much Heat Is Brought Upward By Water Vapor?
qEarth’s surface lost heat to the atmosphere when water is evaporated from oceans to the atmosphere.
qThe evaporation of the 1m of water causes Earth’s surface  to lost 83 watts per square meter, almost half of the sunlight that reaches the surface.
qWithout the evaporation process, the global surface temperature would be 67°C instead of the actual 15°C.