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The melt in Greenland and the high temperatures in Alaska may be more signs—like we needed more—of the reality of climate change. Even scarier is the fact that the climate models used before didn’t predict this sort of thing. The climate is very complex, and it’s hard to model it accurately. This is well-known and is why it’s so hard to make long-term predictions.But before the deniers crow that climatologists don’t know what they’re doing, note this well: The predictions made using these models almost always seem to underestimate the effects of climate change. That’s true in this case, too. So it’s not that the models are wrong and therefore climate change doesn’t exist. It’s that the models aren’t perfect, and it’s looking like things are worse than we thought.
Last year, the United State experienced its warmest year ever. And, globally 2012 was the 9th warmest year since 1850 with the years from 2001 to 2012 being among the top 13 warmest on record. The hottest year was 2010, when the average temperature was 58.2 degrees FNow a study released Monday from the United Kingdom provides more fodder for freaking out over that picture of Alaska.In a press release from the University of Sheffield, whose scientist led the research, jet stream changes were blamed for the big ice melt in Greenland … and may signal another big year of heat and melting. (Note: “GrIS” = Greenland ice sheet) More: http://www.commondreams.org/view/2013/06/23-1