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Darker Arctic Boosting Global Warming

The Grim Reefer sends this news from an Associated Press report: "The Arctic isn't nearly as bright and white as it used to be because of more ice melting in the ocean, and that's turning out to be a global problem, a new study says. With more dark, open water in the summer, less of the sun's heat is reflected back into space. So the entire Earth is absorbing more heat than expected, according to a study (abstract) published Monday in the Proceedings of the National Academy of Sciences. That extra absorbed energy is so big that it measures about one-quarter of the entire heat-trapping effect of carbon dioxide, said the study's lead author, Ian Eisenman, a climate scientist at the Scripps Institution of Oceanography in California. The Arctic grew 8 per cent darker between 1979 and 2011, Eisenman found, measuring how much sunlight is reflected back into space." The same decrease in ice contributes to the weather circumstances that led to extremely low temperatures across parts of the United States this winter.

6 of 378 comments (clear)

  1. Re:Small problem by Stephan+Schulz · · Score: 3, Informative

    Small problem with that is this summer had 50% less ice melt in the arctic

    Says who? 50% less than what? 2012 was a record minimum year. 2013 has bounced back from that record low (in ice extend, not ice volume), but is still one of the years with the least sea ice extend science measurements began. And all the other similarly low extend years have been after 2005.

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    Stephan

  2. Old News by BlindRobin · · Score: 3, Informative

    To anyone that has been paying (not even very close) attention this is nothing new.

  3. Re:There are two "Arctics" by bunratty · · Score: 5, Informative

    The sea ice extent is the surface area of ice that is floating in the sea. Unfortunately, there is more ice floating in the sea because it's calving off the land. The total volume or mass of ice in the Antarctic is decreasing.

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    What a fool believes, he sees, no wise man has the power to reason away.
  4. Re:Not Prudent by SuperKendall · · Score: 3, Informative

    I'm not sure why I am the idiot when you are the one with stupid ideas:

    Based on what do you claim that one foot of sea-level rise will not be harmful?

    Over 100 years? Come on, we can move anything needed over that timeframe. But someone would have to be insane to build something near enough to the ocean where a foot mattered much anyway.

    Your analysis of CO2 level change not affecting things because temperatures have leveled off is fit for a retard

    CO2 has risen (by a lot). Temperatures have not. Pretty clear what is happening and have a tantrum doesn't make you any less wrong.

    CO2 build-up could have adverse effects on more than just temperature.

    And that shows you have zero understanding of the levels of concentration we are talking about here.

    I guess at causes and effects

    And everything else.

    The sad part is, you don't have to guess. You could know. But your religion forbid knowing, just mind-addling hatred towards anyone who disagrees with your philosophy.

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    "There is more worth loving than we have strength to love." - Brian Jay Stanley
  5. Re:Small problem by solanum · · Score: 3, Informative

    Since they were stated out of context to suggest a meaning that wasn't in line with the actual fact stated.

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    Si hoc legere scis nimium eruditionis habes.
  6. Re:Cloud formation albedo by haruchai · · Score: 4, Informative

    About 60% of that rise has been in only the past 30 years.

    That history you're referring to had very few temp rises as quick as what we're seeing now although there were some.

    One of the most important factors, which is not currently in play and won't be for thousands of years is an orbital forcing or Milankovitch cycle.

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    Pain is merely failure leaving the body