Sea Ice Melting to New Lows in Arctic Ocean
August 21, 2012 6:49 PM
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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.
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weather is ...what weather does
8/22/2012 12:37:19 PM
in regards to co2- its PLANT FOOD.
more co2= more plants= more food= healthier people/animals- generally
the problem with mainstream climatology is it is focused ONLY on CO2...CO2 is not a problem- every reputable scientist on both sides of the issue say co2 will cause warming
its the feedbacks that is the issue- especially with the strongest greenhouse gas- and the most abundant greenhouse gas...WATER VAPOR.. H2O...
pro AGW scientists say that there will be a strong positive feedback in reacting to the co2 for water vapor that will boost warming to unprecidented results that we see in the ipcc reports as figured by their models- which have a positive feedback programed into the software.
skeptical scientists say that there will be a negative feedback that will be ~half or less of what the "base" warming caused by co2 would be (ie co2 does About 1.8c per doubling- skeptics say that it will be ~1c of warming, not the 3-5 the ipcc says)
so far the raw observational data from satellites and other sources are saying that the warming that is occuring is less than the ipcc and more skeptical results.
there was a recent paper in published a climate journal that says that from ~1970ish thru 2000 cloud cover globally reduced by ~2ish%....doing the watts per meter squared conversion...that increase of the sun's energy hitting land and oceans can account for a significant portion of the warming that occurred from ~1980-1998-ie it was mostly Natural.
there was a huge arctic storm ~2 weeks ago that caused a big jump in melt.
the greenland "melt" that was reported...was MAYBE 3" in depth.,..for 5 days, then it refroze.
but that will never come up, only "record ice melt!@!!!!!!!"
and in march when the max northern hemisphere sea ice is recorded, it will be within 5% of the average...
funny how no one mentions the antarctic sea ice....
wonder why..(hint, its not shrinking/declining....)
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