MSC 101.docx - MSC 101 Our Polar Ice is in Hot Water 1 Arctic Ocean Sea Ice could be gone in late summer in as little as 3 or 5 years 2 Greenland\u2019s

MSC 101.docx - MSC 101 Our Polar Ice is in Hot Water 1...

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MSC 101 9/6/19 Our Polar Ice is in Hot Water 1. Arctic Ocean Sea Ice could be gone in late summer in as little as 3 or 5 years. 2. Greenland’s glacial ice melt has doubled in last 7 years 3. Warm and salty Atlantic waters are largely to blame a. Carries heat upward 4. More than 93% of total heat of global warming is contained in the light blue area of the upper ocean and dark blue area of the deep ocean. 5. 21000 years ago- last glacial maximum a. Sea level was 120 m lower 6. Last continental scale ice sheet- Greenland a. 1.7 M km 2 ice cap b. Ice covers 81% of Greenland c. Depresses Greenland 800 m d. Ice dome summit- 2 miles high 7. Atlantic Ocean has heated since Industrial Revolution a. Warm salty north Atlantic Ocean current water 8. Warmer and saltier water arrived at mouth of Jakobshavn Fjord in 1997 a. Pronounced glacial and seismic activity 9. Jakobshavn ice stream is most productive glacier in northern hemi a. 10% of Greenland’s output b. Supply annual water needs for US from daily water output from single glacier c.
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