Weather Climate models predict weather patterns will change
around the world with droughts becoming more intense, and severe
storms or superstorms (including snowstorms) becoming more
common.
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Superstorm Sandy, 2012 285 total fatalities Over $70 billion in
damages Hurricane Katrina, 2005 Over 1,800 total fatalities Over
$100 billion in damages
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Sea Level Sea levels rise due to melting ice caps Seas level
has risen about 8 inches since 1880 Average annual sea level rise
is increasing yearly Estimate vary widely, but the more
conservative predictions place future rise between.5 to 1.5 meters
(40-60 inches) by 2100.
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Arctic & Antarctic Sea Ice
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Earth at the height of the last ice age 20,000 years ago:
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If the ice sheet covering Antarctica melted completely :
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Climate Change Occurs Fastest in Polar Regions 1979-2007
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Arctic Ice Pack Is Getting Smaller Ice pack expands over
winter, contracts over summer, minimum in September
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Antarctic and Greenland Ice Sheets Are Getting Thinner
19922012
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Ecological Effects
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Coral Reefs
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Coral Bleaching Loss of symbiotic algae, triggered by high
water temperatures
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Ocean pH Coral skeletons are constructed primarily of carbonate
As CO2 in the atmosphere increases, some of it dissolves in ocean
water Decreases pH (makes the water more acidic) Coral skeletons
collapse
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Loss of corals to bleaching and acidification typically lead to
major ecosystem shift Could we lose 95% of the Great Barrier Reef
by 2050?
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What other effects? Biome and species Distribution? Crops?
Increased range of tolerance for diseases?