AST101H1 Lecture Notes - Runaway Greenhouse Effect, Ultraviolet, Boiling Point
15 Mar 2014
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AST101H1 Full Course Notes
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2nd midterm review: tuesday 4-6 pm, ms 2158. Biggest difference is that venus"s surface is much hotter than earth"s. This is because venus is a lot closer to the sun than earth. More intense sunlight would raise surface temperature by about thirty degrees. This would lead to a lot more water evaporation on the planet. Water is a strong greenhouse gas, but it doesn"t have a negative feedback cycle. Water in the atmosphere would raise the temperature even more, until the would ! planet was above the boiling point of water, and everything in the oceans. This would lead to a runaway greenhouse effect. If earth was where venus is, it would wind up a lot like venus the way that co2 has. be in the atmosphere. The troposphere is the convective part of the atmosphereit carries heat up. A gas expands and cools off when its pressure goes down.
