Sunday, November 20, 2011

What will happen if our poles turn to slushies?

The question:What happens if the polar ice caps melt?


        According to the multiple sources I looked into, I learned that many scientists believe the following to be consequences of the melting of the polar ice caps due to global warming:
  
   First, in terms of flooding and rising sea levels, Kluger states that icebergs are not a concern (2006).  I assumed and hypothesized as much before the ice cube experiment. The floating ice as it melts, simply replaces the water it displaced while it was a frozen hunk.  On the other hand Kluger, points out that glaciers covering land masses like Greenland, have the potential of raising the sea level by 23 feet if they melt, "swallowing up large parts of coastal Florida and Bangladesh" (2006).  He continued to say that the Arctic holds enough water that it could possibly raise sea levels as much as 215 feet.  
     In addition to the threat of rising sea levels, I found scientists concerned with the dangerous amounts of carbon dioxide that would be released into the air if the soil under the glaciers melted and the frozen, organic matter  began to thaw and decompose (Kluger, 2009). 
    Another concern scientists share is the fear that people who rely on mountain glaciers for summer water will run out resulting in drought affecting global economies, "triggering a world-wide food crisis" (Brancaccio, 2009).
    A third issue I read about confused me but essentially said the warm water that circulates in the Atlantic will take on more of the atmosphere's heat once the ice disappears. This phenomenon will cause the continents to become much cooler. Kluger is quoted as saying "This is a bad thing" (2009).
    Lastly with the change in water temperature that has resulted from the greenhouse effect, the number of storms like hurricanes and typhoons have increased.


References


Brancaccio, D. (Host). (2009). On thin ice [Television series episode]. In NOW. New York, NY: JumpStart Productions/Thirteen/WNET New York/PBS. Retrieved fromhttp://www.pbs.org/now/shows/516/index.html.


Kluger, J. (2006, March 26). Global warming heats up. Time. Retrieved fromhttp://www.time.com/time/magazine/article/0,9171,1176980-6,00.html.

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