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Unformatted text preview: o The ocean is warmer overall o The entire earth warms evaporation is enhanced o GREEN HOUSE WORLD o Sluggish thermohaline circulation o Weak vertical stratification o Deep water is really warm! Circumpolar oceans: Cool world o qPolar current goes all the way around the world o water loses a lot of heat: very cold o Polar continents are isolated and insulated o Ice caps form o Deep water formation carries cold water to equator o Ice caps form o Entire ocean cools, and the Earth experiences ice ages o ICE-HOUSE WORLD o Vigorous thermohaline circulation o Strong vertical stratification o Deep water is cold, and ice ages tend to result. A warming earth that melts any existing ice caps will get even warmer as the high latitude albedo changes from high (reflective white ice) to low (heat absorbing ocean or land)...
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- Fall '07