Study Claims Humans Responsible for Half of Arctic Ice Melt

Wednesday, August 17, 2011
(photo: Greenpeace)
Humans are responsible for about half of the recent melting of polar ice, according to scientists at the nation’s leading climate research center.
 
Using supercomputers and advanced climate models, scientists at the National Center for Atmospheric Research in Boulder, Colorado, determined for the first time that greenhouse gases and particulates from pollution had caused one half of the Arctic sea melt-off.
 
The other half was due to “natural variability,” or nonhuman forces impacting the polar climate.
 
According to the report, “Since accurate satellite measurements became available in 1979, the extent of summertime Arctic sea ice has shrunk by about one third. The ice returns each winter, but the extent shrank to a record low in September 2007 and is again extremely low this year, already setting a monthly record low for July.”
 
Environmentalists are expected to use the study to strengthen their fight for greater protection of the polar bear, whose habitat is directly affected by the loss of ice flows.
 
Scientists also noted in their paper that over the next several decades, the polar ice may stabilize or even expand somewhat at times, which could complicate governments’ and businesses’ plans to take advantage of new sea lanes opening up in the Arctic.
-Noel Brinkerhoff
 
New Study Blames Human Beings for Half of Arctic Ice Melt (by Richard Mauer, Anchorage Daily News)
Arctic Ice Melt Could Pause in Near Future, Then Resume Again (University Corporation for Atmospheric Research)

Comments

mike 13 years ago
the question isn't whether to believe my eyes or a climate model. the question is who will i believe: scientists who's career goal is to find the truth and tell it like it is, or oil companies whos purpose in life is to make as much profit as possible no matter who it harms? were climate scientists responsible for the deepwater horizon disaster? the exxon valdez spill? i wonder who "namerequired" works for?
namerequired 13 years ago
the mighty wurlitzer plays on -- with models. based on these, they reach real-world conclusions. meanwhile, "environmentalists" decry the posited warming's effect on polar bears. that's one error compounded by another. polar bears have survived a warm climate in the historical past (e.g., the medieval warming period and before that, the roman warming period -- both of which were warmer than present and neither of which was caused by humans). agw is a classic disinfo campaign. billions have been spent on a propaganda offensive designed to scare people (if only for the sake of the polar bears, we need to cap industry and tax heat and light). data has been fudged ("adjusted") and models tweaked ("optimized") to produce the desired result. it must be comforting though to find certainty in an uncertain world... i notice lately that the climate alarmists have begun to hedge their bets. in this release, for example, they caution that the ice may expand at times, "fooling" people into disbelieving their thesis. another case of their asking the immortal question: who are you going to believe, your own lying eyes or my climate model? anybody remember "global cooling"?

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