The Big Melt

The Big Melt - The Big Melt Issues and Significance:...

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Issues and Significance: Permafrost Rising global temperatures have began to defrost the permafrost layer of the arctic. The permafrost layer is a coating of soil that has been frozen since before the last ice age. The permafrost layer contains so much frozen organic matter that it is considered a carbon sink, containing ~14% of the world’s carbon in soil. Recent studies have suggested that if the entire permafrost layer were to thaw, the atmosphere’s CO2 level would double! This process is simplified in th Terrestrial Carbon Cycle Climate Feedback: QuickTime( and a TIFF (Uncompressed) decompressor are needed to see this picture. This cycle continues to feed into itself, causing some significant human issues Alaska is built on a permafrost layer, and as the Arctic continues to go through this cycle, Alaska is starting to deteriorate. There have been reports of cracked roads and leaning buildings. Glaciers
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This note was uploaded on 04/08/2008 for the course EES 103 taught by Professor Oceanography during the Spring '08 term at Vanderbilt.

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The Big Melt - The Big Melt Issues and Significance:...

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