Antarctic sea ice 'obliterates' previous minimum record, in remarkable reverse

DigitalDave said:
Right, because families dying of starvation through extreme weather conditions is a joyous thought! Does it make you jizz yourself?
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Contentious rubbish, any respect I may have had for you just evaporated. You are little better than a Rune clone albeit slightly more intelligent.

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DigitalDave said:
lol, sourcing a clearly biased site misinterpreting studies does not stop the warming.
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aloysious said:
That's true. So what will?
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DigitalDave said:
Reading the studies themselves is usually the best approach.
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Ah, so if I read the mountains of studies that will make cooler weather. Got it.
I'll make sure to not read any studies . It's 25 F here at the moment and I'm ready for spring. I'm more interested in making the weather warmer. How do I do that?
 
Emmanuel Macron said:
Antarctic sea ice 'obliterates' previous minimum record, in remarkable reverse

http://www.smh.com.au/environment/c...rd-in-remarkable-reverse-20170227-gumt5r.html

There is about 10 per cent less sea ice in Antarctica this year than the previous record minimum - a stunning reversal after new highs were set in 2014.

The sea ice extent around the southern continent has shrunk to 2.1091 million square kilometres on Tuesday, Jan Lieser, a sea ice scientist at the Hobart-based Antarctic Climate and Ecosystems Co-operative Research Centre, said.

Antarctic ice cores tell a global story
Epic 1300km endurance test across a frozen continent for the Australian Antarctic Division as they collect a historic picture of global climate changes.
The area covered by sea ice has been tracking below the previous record low of 2.32 million square kilometres set in February 2011 for most of the past three weeks, and is now about 10 per cent lower. (See chart compiled by Japan Aerospace Exploration Agency for ice coverage.)


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"One would probably say that the old record was obliterated," Dr Lieser said.

An increase in sea-ice extent earlier in the week that appeared to have signalled an end to the melting phase now looks premature, with even smaller ice coverage still possible.

The switch from a sea-ice maximum around Antarctica to its annual low is "one of the biggest natural cycles we see in the world", with as much as 90 per cent of the ice only a year old at the most, he said.

Reliable satellite records only go back to 1979, and it's harder to access ice thickness compared with the North Pole, with Arctic ice mostly accessible from above or via submarine below.

Last winter, though, ice around Antarctica began thawing about a month earlier than normal. Minimum air temperatures have been breaking records daily since about early November in a region of the planet where global warming has been amongst the most rapid, Dr Lieser said.

"[Sea-ice] variability was typical of what we'd seen for the whole period [since 1979], but then along came 2016," said Ian Simmonds, from the School of Earth Sciences at the University of Melbourne. "It's remarkable."

The average ice coverage around Antarctica last year shrank 1.2 million square kilometres – or about the size of NSW, Tasmania and Victoria – compared with 2015, he said.

(See chart below from the US National Snow and Ice Data Center, showing how rapidly ice coverage anomalies shifted.)


Arctic too

Sea ice is now at record lows at both ends of the planet, exposing more of the dark seas to solar radiation, rather it being reflected back to space.

The lack of ice will likely add to the build-up in heat in the oceans that could hinder ice recovery in the south and accelerate the melt in the north as seasons shift towards winter and summer, respectively.
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The Ross Sea is virtually ice free and half the Weddell Sea ice has gone, Dr Lieser said.

While the loss of floating ice doesn't affect sea levels, its absence leaves shore-based ice shelves exposed to faster melting and accelerated glacier movement. "It opens up the vulnerability of the ice shelves around there," Dr Lieser said.

Professor Simmonds said several factors were at play in the Antarctic, such as the strengthening of westerly winds that tend to push sea-ice northwards.

Countering that, though, was the long-anticipated thermodynamic effect that warming ocean temperatures - with the Southern Ocean a major heat sink globally - would limit sea ice growth by melting the bergs from below.

While it's too early to tell whether the second effect is becoming a dominant factor during the current ice retreat, long-term climate models suggest that it will play the major role at some point, Professor Simmonds said..

Antarctic temperatures - along with those in the high Arctic - have been among the fastest rising anywhere, as rising greenhouse gases drive climate change.

Gwen Fenton, chief scientist of the Australian Antarctic Division, told Senate estimates on Monday that air over the Antarctic Peninsula had warmed about 2.8 degrees over the past 50 years alone.
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With any luck it will all melt
 
DigitalDave said:
It's not CARBON, it's 1 part Carbon, 2 parts Oxygen. It's not pompous to know how the greenhouse effect works.
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What? There has never been a "greenhouse" type climate on earth before? I fail to see the point....its not the fact that weather changes...its the fact that the leftist idiots are attempting to suggest that man can control the climate by controlling such an essential element as CARBON that's as common as the air we breath and necessary to all life forms. Coal, Oil, Natural Gas, etc., are all "natural" to this planet....and all such type carbon based fossil energy sources have existed long before mankind...all such elements have been released naturally since their existence...through geological events.

The point is...the Sun has far more influence on the earth's climate than anything that man can do to effect it. This Green BS is just that BS....a leftist generated political movement to garner more power and control for the social communists around the globe. The only thing the leftist policies accomplish in this nation is weakening the economy, weakening this nation's ability to defend itself as its forced to go to 3rd world shit holes (who could give a rat's ass about the environment) in order to get the energy needed.

Only a leftist would bury him/herself in an attempt to prove they know how to use a shovel. And yes...its more than pompous to think that man can control the weather....all one needs to do is pay Sir Al Gore to reduce his carbon footprint...the inventor of the internet.
 
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In a new paper (Stein et al., 2017), scientists find that Arctic sea ice retreat and advance is modulated by variations in solar activity.

In addition, the sea ice cover during the last century has only slightly retreated from the extent reached during coldest centuries of the Little Ice Age (1600s to 1800s AD), which had the highest sea ice cover of the last 10,000 years and flirted with excursions into*year-round*sea ice.

The Medieval Warm Period sea ice record (~900 to 1200 AD) had the lowest coverage since the Roman era ~2,000 years ago.

Of note, the paper makes no reference to carbon dioxide or anthropogenic forcing as factors modulating Arctic sea ice.

- See more at: http://notrickszone.com/#sthash.ixpwsAil.5Eatv5ZC.dpuf


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