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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8/23/2012 8:43:20 AM
What about the cost benefit analyst of having to continue the no-fly zones if we hadn't toppled the Iraqi govt? Let alone the potential continued attackes on other govt assests around the world due to the no-fly zones; ie, embassies bombings in Africa as a example.
We seem to forget about that part of the Iraqi equation.
But anyway. Please the science that man is causing the current warming trend isn't solid. It's currently, we see it's warmer and CO2 has increased. Beyond a doubt is true. But is the increase of CO2 the cause? That is still a matter of debate. But lets cut off our nose to spite our face. It's evil mans fault.
8/23/2012 1:12:47 PM
WTF do embassy bombings in Africa have to do with invading Iraq? You can't seriously believe that the cost of no-fly zones for decades comes anywhere near the cost of the invasion, especially when the human toll is taken into account.
No, that's not how the AGW conclusion is made. We've studied how CO2 causes a radiative forcing through spectrometer analysis (rock solid), and we've looked at climate sensitivity in a many ways with outcomes in the same ballpark. There are attributes to GHG warming which don't apply to other modes of warming. We've eliminated a ton of other possible natural variables and there's really no alternative hypotheses that have remained valid.
AGW theory is not the weakest link in calling for emissions reduction. The determination of societal costs, however, is. There's way too much conjecture here as opposed to science. If the anti-AGW movements weren't so idiotic and continually making easily disprovable claims (e.g. AGW violating thermodynamics, human CO2 production being small vs. natures and therefore "obviously" irrelevant, pointing out a few cold spells in winter, claiming cooling for a decade in 2008, and a bunch of other BS) they would focus on this and make the same simple calculations that I did
using the IPCC's own numbers
8/23/2012 1:58:18 PM
Maybe you should read the rationals Osama gave in attacking US itself and it's assests abroad.
The embassies bombings, in part, was because of the no-fly zones over Iraq. Along with the Kolbart Towers bombing. We were enforcing the no-fly zone, at least from one of the places, in Saudia Arabia. Osama didn't like we had troops in the "holy land".
In the end it all ties together.
The biggest problem with you analyst of AGW and the like is.....
using the IPCC's own numbers.
You are a tad guliable.
We have eliminated all other possible natural variables??? What?? I'm told by people they can't account for all the variables as is, so how can we say we have elimiated all possiblities? Let alone, some of the earlier models didn't take into consideration the Sun or even cloud cover.
In end no one can say with 100% what is going on! Like I have said before, let it warm or cool, I really don't care and will do the best to adapt to any changes. I hope it warms, would hate the cooling effect in our area.
Emissions and pollution that is another topic.
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