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Scientists Warn Arctic Ice Could Vanish in 10 years


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#1 hsedin33

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Posted 14 August 2012 - 12:15 AM

http://news.ca.msn.c...ientists-warn-1

"Arctic sea ice is melting at a pace so much faster than once thought that the latest projections say it might disappear by as soon as 2022, according to measurements from the European Space Agency.
An analysis from the CryoSat-2 probe, launched two years ago as a purpose-built satellite for studying the thickness of Arctic ice, suggests that 900 cubic kilometres of ice have disappeared every year since 2004.

At such a dramatic rate, scientists say it's possible in 10 years that the Arctic could be ice-free for at least a day. "Very soon we may experience the iconic moment when, one day in the summer, we look at satellite images and see no sea ice coverage in the Arctic, just open water," Dr. Seymour Laxon, with London's Centre for Polar Observation and Modelling, told The Guardian newspaper.


The data would mean that the thinning of Arctic ice is progressing 50 per cent faster than many polar scientists had previously predicted, suggesting that global warming and rising greenhouse gases could be contributing factors.

The satellite estimates were cross-referenced with data obtained from NASA planes flying over the Arctic and submarines making measurements via sonar from beneath the ice.
White ice caps reflect sunlight
Laxon told BBC News the results should be accurate to within 10 centimetres.
About 7,000 cubic kilometres of ice remained at the end of last summer. By contrast, there was 13,000 cubic km of sea ice in the Arctic in 2004.
The loss of the Arctic's white ice caps even for a short period could have a profound rippling effect on ocean temperatures. The polar ice caps themselves have a surface that is so bright that 80 per cent of the sunlight it receives is reflected back into space, instead of being absorbed by the Earth.
The absence of the ice caps would likely lead to rising ocean temperatures and release more of the greenhouse gas methane into the atmosphere, further accelerating global warming and rising sea levels.
Laxon said that although the figures are dramatic, they are still based on preliminary studies and that the current rate of ice decline might slow down.
Scientists also noted that the melting of sea ice cannot always be attributed to man-made climate change. For example, NASA last month pointed out a "freak event" in which nearly all of Greenland's massive ice sheet suddenly began melting. NASA stressed that the massive melt occurs roughly once every 150 years, and that records showed the last time it happened was in 1889."

Edited by hsedin33, 14 August 2012 - 12:16 AM.


#2 Armada

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Posted 14 August 2012 - 12:24 AM

Only for a day?

That's not bad.

Edited by Armada, 14 August 2012 - 12:24 AM.

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#3 Jägermeister

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Posted 14 August 2012 - 12:25 AM

The only ice I need is in my drinks and on the hockey rink.
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#4 Pineapples

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Posted 14 August 2012 - 12:37 AM

Why would it only be gone for one day?

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#5 Armada

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Posted 14 August 2012 - 12:40 AM

Why would it only be gone for one day?


I guess the ice couldn't take the heat?

Edit: What an awful joke, I regret saying it.

Edited by Armada, 14 August 2012 - 12:47 AM.

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#6 lee goren rulez69

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Posted 14 August 2012 - 12:55 AM

who cares we're all gonna be on mars in a couple years

Edited by jason king rulez69, 14 August 2012 - 12:55 AM.


#7 Watermelons

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Posted 14 August 2012 - 12:56 AM

Am I the only one that believes the Earth will fix itself it things go out of control?

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#8 Cindilette

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Posted 14 August 2012 - 01:02 AM

We need another ice age.

#9 Joel Heyman

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Posted 14 August 2012 - 01:15 AM

Am I the only one that believes the Earth will fix itself it things go out of control?


No, I do as well; but the Earth beginning to fix itself will be the death of us all, and what we once considered deadly will create new life on Earth once again. That's the beauty of it all, Earth always comes back, and it's a cycle that won't end until our planet dies.

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#10 Hyzer

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Posted 14 August 2012 - 01:18 AM

Earth will be perfectly fine. Humans, however, certainly won't be.

#11 Guest_BuckFoston_*

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Posted 14 August 2012 - 01:34 AM

Well, considering over 100 million people live within 3 feet of sea level, we better start panicking. Because that's the whole point of this article, right? Because if there is no mass panic this is useless and a total kill joy.

#12 Pineapples

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Posted 14 August 2012 - 01:59 AM

I guess the ice couldn't take the heat?

Edit: What an awful joke, I regret saying it.


:lol: I'll still give you a +

...mainly for the bolded part :P

Edited by BUREV, 14 August 2012 - 01:59 AM.

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#13 LucBourdon28

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Posted 14 August 2012 - 04:10 AM

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#14 Dittohead

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Posted 14 August 2012 - 07:56 AM

Sea Ice. it's happened before. what would be worse is if was expanding @ 900 km a year.

#15 Dittohead

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Posted 14 August 2012 - 07:57 AM

Why would it only be gone for one day?


because it's the arctic and it's cold.

#16 Dittohead

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Posted 14 August 2012 - 07:57 AM

We need another ice age.


No we don't that would be the worst thing that could happen.

#17 The Brahma Bull

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Posted 14 August 2012 - 08:23 AM

Am I the only one that believes the Earth will fix itself it things go out of control?


The Earth is constantly fixing itself. It's just bad news for us. :lol:


#18 *VaNcOuVeRCaNuCkS*

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Posted 14 August 2012 - 08:59 AM

Hasn't this been said for the past 100 years or more

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#19 Heretic

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Posted 14 August 2012 - 09:00 AM

So we can blame the Arctic on global warming then - as it's not doing it's job of reflecting sunlight back to space. ;)

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#20 J.R.

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Posted 14 August 2012 - 10:23 AM

We need another ice age.


We need to stop polluting so damn much...some volcanoes/ash clouds wouldn't hurt either.
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#21 Sharpshooter

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Posted 14 August 2012 - 10:24 AM

So we can blame the Arctic on global warming then - as it's not doing it's job of reflecting sunlight back to space. ;)


Noting that the Arctic and Antarctic ice sheets are getting smaller in size and not reflecting the Sun's radiation back into space, is correct.

The more the Earth traps Carbon Dioxide and Methane and other Green-House Gases, the faster the Earth will warm up and the faster and more pronounced the melting of the reflective ice sheets will be, as well as occurring earlier and lasting longer, which will only serve to reinforce the melting and warming cycle.



Edited by Sharpshooter, 14 August 2012 - 10:27 AM.

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#22 TOMapleLaughs

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Posted 14 August 2012 - 11:42 AM

Even if we stopped 100% of all global emissions today, we're still beyond the point of no return.

We'll have to adapt to rising sea levels. Countries like Bangladesh are the ones in real trouble.
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#23 Sharpshooter

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Posted 14 August 2012 - 11:51 AM

Even if we stopped 100% of all global emissions today, we're still beyond the point of no return.

We'll have to adapt to rising sea levels. Countries like Bangladesh are the ones in real trouble.


Point of no return?

I haven't read anything to suggest that. There's still time and steps we can take to mitigate, lessen or even reverse aspects of climate change. Other aspects will be with humanity for a long time however. Doesn't mean we shouldn't try. We need an all hands on deck approach now, if we want to preserve our climate as we know it for the forseeable future.

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#24 Ryanstorm

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Posted 14 August 2012 - 11:58 AM

Everyone knows the world is going to end this december 2012.
























:bigblush:

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#25 Special Ed

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Posted 14 August 2012 - 12:36 PM

IMO we aren't suppose to have ice caps in the first place. It was a result of large asteroid impacts. Much like the one the wiped out the dinosaurs. Things are just returning to norm. Until the next impact of course.

***article***

Wendy Zukerman, Australasia reporter

A massive asteroid hit the Timor Sea around 35 million years ago - and the impact apparently contributed to the formation of the Antarctic ice sheets.

So says Andrew Glikson, a specialist in the study of extraterrestrial impacts, from the Planetary Science Institute at the Australian National University in Canberra, who analysed a dome found 2.5 kilometres below the Timor Sea, about 300 kilometres off Australia's north west coast.

Based on the structure of the dome, called Mount Ashmore, there were two obvious explanations for its formation: from a mud volcano or from the movement of tectonic plates.

But using a barrage of tests including scanning electron microscopy and seismic surveys, as well as chemical analysis of the rocks, Glikson concluded that the dome was the result of an asteroid crashing into the Earth at such speeds that it caused the Earth's crust to rebound (Australian Journal of Earth Sciences, DOI: 10.1080/08120099.2010.481327).

Images from scanning electron microscopy showed that the cracks and pulverised rocks throughout the dome were unlike those seen in tectonic plate movements.

Seismic surveys and above-ground magnetic studies revealed the dome's massive dimensions. Its diameter of over 50 kilometres and vertical axis several kilometres in height are significantly larger than previously found mud volcanoes - making this an unlikely candidate for one. So far the largest mud volcanoes, found in Azerbaijan, are only 10km in diameter.

According to ABC News, Glikson says the asteroid that created the dome was probably 5 to 10km wide.

Discovery News reports that:

"Smaller [asteroid] impacts only create an impact crater. But during larger impacts, something different may happen: an impact dome or central peak rises up in the middle of the crater."
In the case of Mount Ashmore, rock rebounded upwards at the point of impact, compensating for the huge compressive punch of energy delivered in collision.

And when this asteroid collided with Earth, it wasn't alone.
Australian Geographic reports:

"Several other craters have been documented from a similar time, including one of the Western Australian coast measuring 120km in diameter. Another asteroid impact structure in Siberia is 100km in size."
Glikson believes that this asteroid storm may have shifted the Earth's plates to create a gap between Antarctica and South America, known as the Drake Passage, which still exists today.

Discovery News writes:

"The rush of water through Drake Passage isolated Antarctica's climate from the rest of the globe, and fostered the growth of a large ice sheet."
According to Australian Geographic, these ice sheets in combination with newly-emerging currents around Antarctica may have allowed cooler water into the world's ocean, and possibly resulted in a well-documented cooling of the planet.

http://www.newscient...alasia-rep.html

------------

Fairly old article but on par in what I have always personally believed. Without large asteroid strikes our planet is normally much warmer. Of course a little global warming speeds things up, but I don't believe it has a significant impact.


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#26 TOMapleLaughs

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Posted 14 August 2012 - 12:46 PM

We're going to have to massively scrub CO2 from the atmosphere if we indeed want to reverse the damage already done. Technology is available and we should be doing it now, but alas we're still debating whether the problem actually exists.

Going to have to lose/displace a significant part of the coastal population before real action is taken. At that point it may be too late. It's not like any solution is a quick fix. We'll have to adapt for the time being.
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#27 Sharpshooter

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Posted 14 August 2012 - 12:47 PM

IMO we aren't suppose to have ice caps in the first place. It was a result of large asteroid impacts. Much like the one the wiped out the dinosaurs. Things are just returning to norm. Until the next impact of course.


Fairly old article but on par in what I have always personally believed. Without large asteroid strikes our planet is normally much warmer. Of course a little global warming speeds things up, but I don't believe it has a significant impact.


If we didn't have ice caps, or an ice age for that matter, there's a chance that our species could have become extinct a long time ago.

Also, your personal beliefs mean nothing when put next to empirical evidence. It's a fact that man is contributing to the alteration of the planet's climate.

If our planet reverted back to the stage when it had no significant glacier or polar ice formations due to warming, hundreds of millions if not billions of people would suffer and eventually die.

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#28 Sharpshooter

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Posted 14 August 2012 - 12:49 PM

We're going to have to massively scrub CO2 from the atmosphere if we indeed want to reverse the damage already done. Technology is available and we should be doing it now, but alas we're still debating whether the problem actually exists.

Going to have to lose/displace a significant part of the coastal population before real action is taken. At that point it may be too late. It's not like any solution is a quick fix. We'll have to adapt for the time being.


The worst part won't be losing the coastal regions....it'll be how to feed and provide drinking water to billions of people when sources for them run out due to glacial melt and drought.

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#29 Tystick

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Posted 14 August 2012 - 12:54 PM

We're going to have to massively scrub CO2 from the atmosphere if we indeed want to reverse the damage already done. Technology is available and we should be doing it now, but alas we're still debating whether the problem actually exists.

Going to have to lose/displace a significant part of the coastal population before real action is taken. At that point it may be too late. It's not like any solution is a quick fix. We'll have to adapt for the time being.


Ya but stopping emissions all together would have a serious impact. It wouldn't happen overnight, but certainly within the next 10 years. The atmosphere would fix itself.
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#30 J.R.

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Posted 14 August 2012 - 12:59 PM

If our planet reverted back to the stage when it had no significant glacier or polar ice formations due to warming, hundreds of millions if not billions of people would suffer and eventually die.


Not trying to diminish their potential suffering/death and I'm CERTAINLY no right wing, anti-science nutter who doesn't believe we're largely the cause of all this (or at the very least rapidly increasing the rate it's happening)...but if there's one thing the earth could use, it would be a few hundred million less people on it. Just sayin'...

Edited by J.R., 14 August 2012 - 01:00 PM.

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