Arctic ice thins dramatically

Discussion in 'Environment' started by Chris, Aug 27, 2009.

  1. Chris
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    Chris Gold Member

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    PASADENA, Calif. – Arctic sea ice thinned dramatically between the winters of 2004 and 2008, with thin seasonal ice replacing thick older ice as the dominant type for the first time on record.

    The new results, based on data from a NASA Earth-orbiting spacecraft, provide further evidence for the rapid, ongoing transformation of the Arctic’s ice cover.

    Scientists from NASA and the University of Washington in Seattle conducted the most comprehensive survey to date using observations from NASA’s Ice, Cloud and land Elevation Satellite, known as ICESat, to make the first basin-wide estimate of the thickness and volume of the Arctic Ocean’s ice cover.

    Ron Kwok of NASA’s Jet Propulsion Laboratory in Pasadena, Calif., led the research team, which published its findings July 7 in the Journal of Geophysical Research-Oceans.

    The Arctic ice cap grows each winter as the sun sets for several months and intense cold ensues. In the summer, wind and ocean currents cause some of the ice naturally to flow out of the Arctic, while much of it melts in place. But not all of the Arctic ice melts each summer; the thicker, older ice is more likely to survive. Seasonal sea ice usually reaches about 2 meters (6 feet) in thickness, while multi-year ice averages 3 meters (9 feet).

    Using ICESat measurements, scientists found that overall Arctic sea ice thinned about 0.17 meters (7 inches) a year, for a total of 0.68 meters (2.2 feet) over four winters. The total area covered by the thicker, older “multi-year” ice that has survived one or more summers shrank by 42 percent.

    Arctic ice thinned dramatically between 2004 and 2008 | VANCOUVERITE
     
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  2. Chris
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    Chris Gold Member

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  3. Chris
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    Chris Gold Member

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  4. Big Black Dog
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    Big Black Dog Gold Member Supporting Member

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    I'm in the process of building an arc at this very moment because I am certain that the extra water from the melting ice is going to raise the sea level and we'll all be fucked. Get a life... Environmental wackos are out tonight... Beware.
     
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  5. elvis
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    elvis BANNED Supporting Member

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    Chris Chicken Little is at it again.
     
  6. Chris
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    Chris Gold Member

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    The melting arctic ice won't raise the sea level.

    The ice in Greenland and Antarctica will.
     
  7. Mr. H.
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    Mr. H. Diamond Member

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    Will it raise taxes?
     
  8. Mr.Fitnah
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    Mr.Fitnah Dreamcrusher

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    We had better stop those volcanoes under the arctic ice.
     
  9. Chris
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    Chris Gold Member

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    Grasping at straws?

    They must be causing the land based glaciers to melt as well.

    :lol::lol::lol:
     
  10. KittenKoder
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    KittenKoder Senior Member

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    :lol: Still pitching for more taxes and forced product and service sales I see. You love supporting monopolies, just admit it, you only want two rich people to run the world.
     
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