2300 because of thermal expansion from deep ocean

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2300, because of thermal expansion from deep ocean which takes decades to have its full effect. If no stabilization, Greenland ice sheet would disappear and alone contribute 7 m (23 feet) to the rise in sea level. Florida will be almost completely gone, along with most major coastal cities worldwide. VII. Effect on ecology A. Biome types, subtypes. Of course, northern biomes will decline. Can see from Holdridge graph slide And alpine areas will decline (no snow in the Sierras anymore). Wetter deserts like the Sonoran in Arizona will be replaced by dryer deserts like the Chihauhan. Your last discussion paper documents some of this. B. Species preservation. 1. General agreement that sea ice in the Arctic is going away quickly. Polar bears hop from iceberg to iceberg to feed. slide These animals are disappearing, and extinction of the polar bear species in natural habitat is almost a certainty. Caribou, other northern species are affected also slide 2. Climate change affects biome types, vegetation types. How many species will be lost? Estimate from present ranges (Thomas and many other authors, published in 2004) using mammals, birds, frogs, reptiles, butterflies, plants -- all relatively well known): 25% of species will be brought to extinction this way (by climate change) by 2050!
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  • Fall '08
  • Strong,D
  • Climate Change, Greenhouse gas, Antarctica, sea level, sea level rise

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