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polar ice summary

polar ice summary - Walruses must either find food or...

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Scott Choe 9/25/07 English165 Sea Ice Melt Sea Ice over 1 million more miles this summer than the average melt over 25years Area is larger than AL and TX combined Data from national Snow and Ice Data Center Arctic sea ice is first signal of effects of rising temperature Sea ice is thinner, greater expanses of open water This alters Alaskans way of life (travel, food storage) Northwest passage stays open longer More oil and gas extraction Arctic wildlife (polar bear, walrus, seal, birds) are losing habitation, extinction References the polar bear & ice article
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Unformatted text preview: Walruses must either find food or abandon young Arctic temps are rising faster than global average There’s less sea ice now than most climate models projected for 2050 Model seems to underestimate ice loss Scientists use a baseline from 1979-2000 to compare to today’s sizes Melting sea ice does NOT raise sea levels, but lessens ability to reflect sunlight back Weather this summer: persistent high pressure After sep16, pack ice will reform Biggest size is in Jan/Feb Data has historically had a lot of variability...
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