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Greenland Is Getting Darker

sciencehabit (1205606) writes "Greenland's white snow is getting darker. Scientists have generally attributed that darkening to larger, slightly less white snow grains caused by warmer temperatures. But researchers have found a new source of darkening taking hold: impurities in the snow. The new darkening effect could easily add 2 centimeters to the projections of 20 cm sea level rise by 2100—and perhaps more if impurity levels grow with time."

2 of 174 comments (clear)

  1. Re:China anyone? by Opportunist · · Score: 5, Insightful

    Yes, and as long as WE keep buying their cheap crap, WE actually reward this behaviour.

    Remember, that thing called free market? Where the buyer decides what products flourish and what products perish based on his decision what he buys and what he doesn't? It's the only little bit of free market left that we have, and, well, it seems that we want China to pump out black smoke as long as it means we get to buy cheap crap.

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    We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
  2. Re: ...if impurity levels grow with time. by radtea · · Score: 5, Insightful

    No wonder people doubt climate change when scientists say things like this..

    I'm just guessing here based on nothing but a few decades of involvement in the scientific community, but I'd say it's pretty likely that a) the scientists in question have thought of your objection already and b) they have quantified the relative contributions from increased grain size vs increased dark pollutants.

    What would be incredibly stupid is assuming that people who study this stuff professionally can be out-thought by a random Internet commenter who has just encountered the question for the first time.

    But just in case, let me ask you: what is the quantitative relationship between grain size and reflectivity of snow? Please respond with a graph or formula. You must have access to this information to judge the relative importance of grain size vs pollutant cover, and it would be a positive contribution to this discussion to share it.

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    Blasphemy is a human right. Blasphemophobia kills.