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  (Source: sciencedaily.com)
Sea ice extent in the Arctic fell to 483,000 square km (186,000 square miles) on August 13, a new record

The Arctic Ocean is feeling hot, hot, hot, says new report released by the U.S. National Snow and Ice Data Center. 
 
According to the report, sea ice extent in the Arctic dropped to a record low on August 13, and will continue dropping to new record lows by the end of the month. 
 
Sea ice extent, which measures the amount of sea ice remaining in the ocean, fell to 483,000 square km (186,000 square miles) on August 13. This was a dip from the previous record low on the same date back in 2007. 
 
But that's not the end of it. The Arctic sea ice is expected to continue melting through mid to late September, but more record lows have been predicted for the end of this month.
 
"A new daily record would be likely by the end of August," said Ted Scambos, lead scientist at the U.S. National Snow and Ice Data Center. "Chances are it will cross the previous record while we are still in ice retreat."
 
The news of a new record hasn't surprised many among the environmental community. This may be because the Arctic neared record lows last year, according to climate physics Professor Seymour Laxon from University College London. It almost seemed inevitable that this would happen at some point. "Rapid" melting occurred in June of this year as well with 100,000 square km melting daily.
 
However, Laxon worries that this rate of melting will adjust the prediction for an ice-free Arctic in summer. Previous reports estimated that the Arctic will have an ice-free summer in 2100 based on melting at that time, but when the 2007 low hit, this estimate was brought to the 2030-2040 range. Scientists are now concerned that this year's lows will bring that date even closer, which is problematic because the melting of sea ice means warming of the oceans. Sea ice keeps the Earth's temperature controlled.  
 
Global warming always seems to be a hot topic (pun intended). A recent controversial report released by James Hansen at NASA's Goddard Institute for Space Studies claimed that global warming has caused hotter summers since 1980, but many question the merit of his opinions based on his position on climate change. 
 

Source: BBC News



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RE: Yawn
By amosbatto on 8/26/2012 2:26:17 PM , Rating: 2
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quote:
Isolated incidents aren't reported b/c they're isolated fcking incidents. The trend is a complete collapse.

LOL you present that limited graph as "proof"?
Link
look there for new science showing that in fact some large glacier regions are gaining ice

You are cherry picking. The global mean ice loss on a glacier is 14 meters per year:
http://en.wikipedia.org/wiki/File:Glacier_Mass_Bal...

Glaciers worldwide (not including the poles and Greenland) are loosing a average of 300 km3 of ice per year:
ftp://sidads.colorado.edu/DATASETS/NOAA/G10002/Sup...

94% of glaciers worldwide are shrinking:
http://www.skepticalscience.com/himalayan-glaciers...

Given the predicted rises in temperatures, it is predicted that most glaciers outside the Antarctic and Greenland will be gone by 2100.

quote:
quote:
Entire ecosystems have developed to rely on them, like walruses and polar bears. Now all those creatures will go extinct.

Link
new science is clearly showing that PB, polar bears, actually go back 4-5 million years and have lived through far more extreme inter glacials that were far warmer then we have today

Well, yes the article you link to does show that polar bears did manage to live through the interglacial periods, but remember that the Eemian interglacial was only 1 to 1.5 degrees Celcius warmer than the 1880-1920 average and the early Pliocene was about 2 degrees warmer. We have already had 0.8 degrees of temperature rise and the predicted rise will likely be over 2 degrees. The article shows from the genetic evidence that the polar bears were reduced to a very small isolated populations during the interglacial periods, and then they rebounded. It is highly likely that they won't be able to do that in the coming temperature rise, because the change will be faster with higher temperatures than previous interglacial periods. The article shows that bear species did interbreed in the past, (and it may happen again if the temperature changes are gradual enough to give polar bears the chance to start breeding with black and brown bears) but then they will no longer be polar bears as we know them.


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