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from the did-they-expect-to-find-handwarmers? dept.
OSLO (Reuters) - Natural swings in the Arctic climate have caused up to half the precipitous losses of sea ice around the North Pole in recent decades, with the rest driven by man-made global warming, scientists said on Monday.
The study indicates that an ice-free Arctic Ocean, often feared to be just years away, in one of the starkest signs of man-made global warming, could be delayed if nature swings back to a cooler mode.
Natural variations in the Arctic climate "may be responsible for about 30–50 percent of the overall decline in September sea ice since 1979," the U.S.-based team of scientists wrote in the journal Nature Climate Change.
Sea ice has shrunk steadily and hit a record low in September 2012 -- late summer in the Arctic -- in satellite records dating back to 1979.
(Score: 4, Informative) by c0lo on Wednesday March 15 2017, @12:05AM (8 children)
(Idiotic post of the year so far).
Quasi-static scenario: one experience negative feedback around stable equilibrium points - this is why they are stable, any small enough perturbation and the system will dissipate the perturbation and bring back the balance.
Dynamic systems are more complicated, with attractors [wikipedia.org] in the configuration space.
Some consequences of the above:
1. Quasi-static scenario - at large enough perturbations, nobody guarantees you the system will end into an equilibrium state that's still suitable for your life (along with the superior-to-you level of life which we call humanity). See Venus [universetoday.com] - a nice state of equilibrium with a surface temperature of about 750K (460C) - go sniff-test it
2. dynamic system - even if there would be a single attractor present in the configuration space (which would be a damned simple dynamic system), nobody guarantees you that the "excursion" on the trajectory of the system is made from states suitable for life. Travel on such a trajectory and you are toast before the system "balances" again.
https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford
(Score: 1) by Arik on Wednesday March 15 2017, @04:39PM (7 children)
Why look that far when we have an example much closer?
Earth has spent a lot more time in a hothouse state than our current iceball state.
If laughter is the best medicine, who are the best doctors?
(Score: 2) by c0lo on Thursday March 16 2017, @06:04AM (6 children)
But never in a hellball state as Venus. Not impossible, though.
For contrast, buddy.
Also an example of a equilibrium state that is unable to sustain life (at least not the human one) even if Venus is in the Goldilocks zone.
https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford
(Score: 1) by Arik on Thursday March 16 2017, @12:31PM (5 children)
If laughter is the best medicine, who are the best doctors?
(Score: 2) by c0lo on Thursday March 16 2017, @01:06PM (4 children)
I can't figure out what you object to. Is it Venus a bad example?
https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford
(Score: 1) by Arik on Thursday March 16 2017, @03:38PM (3 children)
Almost as if you are unconsciously shying away from the fact that Earth has had tremendous climate changes many times in the past, without any Humans around to cause them.
If laughter is the best medicine, who are the best doctors?
(Score: 2) by c0lo on Thursday March 16 2017, @04:00PM (2 children)
Or not being aware of them, but incidentally knowing the condition in Venus.
Feel free to put whatever you think as motivation for my choice, free speech is allowed on SN. But don't be surprised if I'll drop the conversation and ignore you when you go to far.
https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford
(Score: 1) by Arik on Thursday March 16 2017, @08:07PM (1 child)
"Or not being aware of them"
Perfectly good explanation as well, as far as that goes.
But either way, surely you can see how it seems interesting to me how often people who lack such basic knowledge on the subject think they are somehow qualified to tell me what to think?
If laughter is the best medicine, who are the best doctors?
(Score: 2) by c0lo on Friday March 17 2017, @12:20AM
Heh, yeah... sure, mate.
It's usually called "Commenting on SoylentNews", not "Publishing in a peer-reviewed science journal" nor "Internet mediated hypno-trace mind washing".
Glad that you are immune to the latter, but I reckon assuming the worst hidden agenda every time is a bit of an overreaction.
https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford