Sea Levels May Rise More Rapidly Due To Greenland Ice Melt
An anonymous reader quotes a report from The Guardian: Rising sea levels could become overwhelming sooner than previously believed, according to the authors of the most comprehensive study yet of the accelerating ice melt in Greenland. Run-off from this vast northern ice sheet -- currently the biggest single source of meltwater adding to the volume of the world's oceans -- is 50% higher than pre-industrial levels and increasing exponentially as a result of manmade global warming, says the paper, published in Nature on Wednesday. Almost all of the increase has occurred in the past two decades -- a jolt upwards after several centuries of relative stability. This suggests the ice sheet becomes more sensitive as temperatures go up.
The researchers used ice core data from three locations to build the first multi-century record of temperature, surface melt and run-off in Greenland. Going back 339 years, they found the first sign of meltwater increase began along with the industrial revolution in the mid-1800s. The trend remained within the natural variation until the 1990s, since when it has spiked far outside of the usual nine- to 13-year cycles.
The researchers used ice core data from three locations to build the first multi-century record of temperature, surface melt and run-off in Greenland. Going back 339 years, they found the first sign of meltwater increase began along with the industrial revolution in the mid-1800s. The trend remained within the natural variation until the 1990s, since when it has spiked far outside of the usual nine- to 13-year cycles.
Washington D.C. is very near sea-level, isn't it?
"Encyclopedia" is to "Wikipedia" what "Library" is to "Some people at a bus stop"
Once upon I time, I thought it was a legitimate concern. But they've Chicken Littled it way beyond anything I have patience for at this point. Every week or two, we get another 'report' speeding up the timeline to armageddon by 25-50% or adding another foot or two to predicted sea level rise. I can only take so much before I have no choice but to write this whole thing off as fear mongering. To what end, I don't know, but it's clearly obvious at this point that it is - nothing is this dire. Nothing.
Look, I don't want to hand our offspring a big shitburger after we're gone. I don't want them to hate us and look back on us with disgust. But there's no way things are as bad as they say. I would have given money, changed my lifestyle, my purchasing habits, whatever was required - and I did, for a time. But after years of constant escalation of rhetoric, I am done. I'm not going to waste any more of my time or effort on this. Things will be fine, we'll adapt, some people will have to move, some species will die out. But life will go on. At this point we've turned it into a bigger issue than climate change ever was. Adios.
With that much fresh water entering the north Atlantic, it could well shift the North Atlantic current and that could more drastically affect the climate of Europe and create some dramatic cooling there. That might, in the long run, be worse for Europe than the rising sea levels.
Fucking hell, slashdot, must every other article be about global warming or trump or full communism now???
FUCK OFF
Um, sorry. As a person of a younger generation that will need to deal with the accumulation from this shit storm, NO. So sorry that you need to be bothered with news stories about the mess that you have helped create. Yup, it was far easier when we pretended we could talk about effects to far off future generations. It was incredibly wrong AND some of these "far off future generations" are now old enough to be able to understand that we are getting screwed over.
CO2 in the atmosphere has gone up and down over the years with a natural cycle; we should be at a peak now. Looking at the climate on the scales of 10,000's of years, you would predict that it would be getting colder and this is, indeed, what was predicted back in the 70's. However, instead of peaking, CO2 has gone up and up. Hence the predictions have changed. The change caused by human production of CO2 has massively outweighed any natural cycle.
Predictions change as either knowledge or the world changes. Since the 70s, both of these have happened.
What I'd like is to -- someday -- see all these deniers, excuse seekers, carbon lobbyists, oil burners before a court, accused of crimes against humanity.
And then, the likes of Trump, the Kochs, most of the political class, Bannon, all that ugly bunch doing services in those places in the world where damage is highest (I'm not for jails, mind you).
Instead of a miniscule bad effect, why don't you work against serious degradations to the human condition, like dictatorships all over, who leave their citizens magnitudes worse off than the worst effects of global warming?
For that matter, lets see politicians who send out political favors for kickbacks, grinding industry to a halt worldwide in favor of their connected friends, be tried, if you're worried about bad effects on humanity.
It's fun to disasterbate because it makes us feel special and open to secret knowledge! What's that word? Tuned in? No, that's the 1960s. His eyes open; his sails unfurl? No, that's the 24th century.
Woke! That's the current term. You're woke!
(-1: Post disagrees with my already-settled worldview) is not a valid mod option.
Off the top of my head: Al Gore & Leo DiCaprio
Other "Lear Jet Liberals": Madonna, Brad & Angelina, John Travolta (owns five jets), Barbra Streisand.
Ok, so you think there's no difference between a delta of x and a double diffetential of e^x.
Your maths teacher should be fired if you're that grotesquely incompetent when it comes to rates of change.
But you're not that stupid. Nobody is. So stop acting as if you were.
It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
"As a young person", you're more part of the problem then us older folk - in the US anyway. If you would actually get out and vote, get people in office who would do something, then we could change it. Sitting back, blaming previous generations is rather pointless when you refuse to exercise your rights and the tools within the system itself, is really the root cause in the US, namely elected owned assholes.
I have also been on the Earth a long time. Making measurements.
Ice is there, yes. A few hundred miles less ice on the glaciers. I assume that you can tell the difference between an ice cube and an ice sheet. Or is it all filed under ice?
Bloody hell.
Storms have always been there. In different places, with different moisure content.
Maybe the Khmer Empire thought the same as you, just before they died horribly. They'd moved the atmospheric rivers by several hundred miles. Sure, there was rain. Just not near them, because they were idiots.
Don't copy them.
The temperature has risen to levels that are higher than what they should be given prevailing conditions. But that's not as important as the gradient. The gradient has never occurred in historic times, or indeed any time since the last asteroid strike.
But you ignore that and assume all gradients are equal, all numbers are equal.
They are not.
The Khmer discovered this too late. This time, you're plsying not with millions of lives but billions. Ignorance isn't going to save even one of them. There is no plea bargain with physics.
It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
And the facts are that nothing has changed much.
Your facts are out of date.
"Encyclopedia" is to "Wikipedia" what "Library" is to "Some people at a bus stop"
Sorry, neither are scientists. None of the others listed are, either.
Nor have you shown you'd give a damn if they'd sailed to the major conventions, or used the Internet to dial in.
All you'd do is whinge they were taking bandwidth from your online games.
Give me real names and a real reason to think you'd actually care about their choice.
It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
CO2 in the atmosphere has gone up and down over the years with a natural cycle; we should be at a peak now. Looking at the climate on the scales of 10,000's of years, you would predict that it would be getting colder and this is, indeed, what was predicted back in the 70's. However, instead of peaking, CO2 has gone up and up. Hence the predictions have changed. The change caused by human production of CO2 has massively outweighed any natural cycle.
Predictions change as either knowledge or the world changes. Since the 70s, both of these have happened.
CO2 levels over the last 10.000 years according to ice core data: https://2.bp.blogspot.com/-qtL...
And yet you offer no proof of this omission and no proof of substantial deviation. The models have been highly accurate sibce the 1990s and far more accurate than the skrptics since the 1890s.
And yet that part doesn't bother you.
The fact that the science has been fundamentally sound for 114 years doesn't enter your equation.
What concerns you is a vague, meaningless statemwnt about something that probably never happened.
Honestly, that's pathetic.
It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
Nobody claimed that for 2013. Fictional claims make you look stupider than you already are.
The sea levels have indeed been rising, in line with actual prediction.
It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
It will never snow in DC again, then DC is crippled by snow that year.
It will never snow in UK again, then the UK is crippled by snow.
Whoever told you either of those two things is an idiot and no one in the mainstream scientific community believes that it will never snow again in those locations. What they probably said (or what the scientists said before twisted by someone somewhere) was, snow will be more rare- but also more extreme when it does occur in those locations.
Its the warmest year in the US by FAR, until you include Alaska that year then it was one of the coldest ever.
Yeah, and this coincides with the earlier point. As the global temperature rises, the cold polar air isn't staying put over the poles anymore- it drifts down one spot- that makes one part of the globe to get unseasonably cold and another part unseasonably warm. So yes- winter now is seeing both an increase in extreme heat AND extreme cold. It's also possible to have a highest global temperature on record whilst the US has a particularly cold season. Global climate change refers to the globe- not local weather conditions. Don't confuse local weather with global change.
"That's the way to do it" - Punch
But we have a zero carbon alternative. Build nukes.
What I'd like to see is all the hippies and foot draggers who run around with their hair on fire about global warming, but then stall technical solutions, to be hauled before a court and accused of crimes against humanity.
Have gnu, will travel.
Denialists would often ask, "what if these imperfect estimates are too high?" and scientifically-minded people would counter with "what if these imperfect estimates are too low?" In the last few years it's been obvious that they were mostly too low (as in conservative) across the board. Oddly enough the constant unfounded accusations of bias toward climate science has created a real bias toward conservative estimates, as scientists all fear overestimating and becoming the deniosphere's celebrated Chicken Little.
"When information is power, privacy is freedom" - Jah-Wren Ryel
Just asking...
Greenland has not been green during human habitation of the island. It was called "Greenland" not because it was green but because it was easier to convince people to move there with that name rather than if it was called "Freezingcoldbarrenpieceofshitland".
Seriously, that's why it was called Greenland, because it sounded pleasant and made getting colonists to go there easier.
"That's the way to do it" - Punch
It couldn't be "full communism" because almost nobody knows what that means now. We live in the Golden Age of Bullshit, where words are used for how they make you feel, not what they mean.
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How about the people/industries that finance them? Hippies on their own are poor and have little affect.
Exxon for example, upon realizing that global warming was real back in the '70's, made the decision to finance the anti-nuke camp to maintain their industry.
https://en.wikipedia.org/wiki/Inverted_totalitarianism
New flash - the entire history of the modern human species has occurred in a single ice age - the current Quaternary Ice Age started about 2.6 million years ago, about a half-million years before homo erectus evolved.
You may be thinking of the latest glacial period within that ice age, and yes, we were possibly coming out of that before our carbon-based economy gathered anything like its current momentum. However, we've accelerated the process considerably by adding major new forcing factors in the form of deforestation, desertification, and significantly boosting the heat retention of the atmosphere - and that's changing things considerably faster than normal, and there is a very real risk that on our current course we'll cause the ice age to end, and the Earth to transition to it's opposing quasi-stable hothouse state.
And while the Earth is always changing, it's the speed of that transition which can be a problem - most trees and other plants can't migrate very quickly, and if the climate lines move faster than they can, they likely go extinct, and take much of their associated ecosystems with them. And we're already in the midst of one of the larger extinction events the planet has seen thanks to pollution, over-hunting and ecosystem destruction. A second, independent extinction event on a similar scale may well reduce biodiversity to the point of ecosystem collapse. It's happened several times before, and it can take the planet many thousands of years to recover. Bad news for anyone who wants to eat regularly in the interim.
Perhaps even worse, at least for us, is that it's looking like such transitions don't happen smoothly. As the thermal engines driving weather destabilize, weather patterns become less predictable from year to year, and the rate of crop failure increases considerably as a result. And when people get hungry, wars break out.
--- Most topics have many sides worth arguing, allow me to take one opposite you.
OK, here you go: between 1993 and 2014, global sea level rose 2.4 inches according to NOAA.
This amounts to a background increase of 1/8 inch per year and is mostly due to the ocean's thermal expansion.
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Wow, let's look back one century to the grand year of 1918.
Top of the line car was a Studebaker Special Six, with a whopping 29.4 HP engine. Yep, that looks and performs like every car we drive today (actually I kind of like the design, wouldn't mind owning one myself).
Miles of paved road. I can't find any data back to 1918, but starting in 1960 the USA had about 1.2 million miles of roads, 2016 puts that about 2.7 million miles now.
Bridges, I can't find exact numbers per year, but I do see that at least 15 new bridges are built every year.
So yeah, I guess no Infrastructure construction or maintenance has happened since 1918! Seriously you must be deluding yourself! Bridges alone are built to last 50 years, which means that since 1918 if we didn't build any new ones or maintain any of them we should have no bridges 100 years later. I find that hard to believe as I crossed one just getting to work.
Word of advice, things change all the time. There are things you notice, like a new shopping mall, or new track of housing that goes up in less than a year. Then there are other things you don't notice, like the height of all the trees in your neighborhood that eventually grow so tall they snap power lines, the number of planes flying overhead, rivers cutting a grand canyon out of solid rock over millions of year. Just because things aren't changing rapidly around you doesn't mean it isn't happening. Old infrastructure is changing all the time, it just tends to look old because people want to keep it that way (take aluminum house wiring with new copper runs, gas lamps replaced by street lights, old cars with modern engines, retrofitted building with steel frames, historic roads with new reinforced beddings). Take a common item you probably see every day, the light bulb. Ten years ago the common type was probably an incandescent, 5 years ago most likely a CFL, now you will probably see LED bulbs. To the casual eye they all look the same.
What "full communism" means is a society without any government at all -- or classes or money for that matter. If you look at "communist states", they actually have all of these things: social classes, currency, and some degree of private ownership.
In fact, in a certain sense "communist state" is a contradiction in terms. Communist regimes knew this, and justified their existence as a vanguard revolution that would bring about communism in the long term. This really wasn't any better, since communist ideology see communism as a natural and historically inevitable outcome of capitalism.
If you look at how "communist states" actually arose, they didn't arise out of a popular adoption of communist ideology. That comes later. Indigenous communist revolutions never happened in functioning democracies; they came in societies dominated by wealthy oligarchs, dictators or warlords. I see a lot of parallels with the anti-elitism of Trumpists. They're not ideologues; they're just fed up with the elite and want the swamp drained.
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That came out of the mainstream scientific community, and was promoted by the various government meteorological offices and so forth. In the case of the UK, the MET openly stated that kids wouldn't know what snowfall was by I think it was 2015 or something.
It's much more likely that a journalist twisted the words of a scientific study to be more "newsworthy" than for any scientist to say that. Most of the sensationalist science stories are exaggerated from less sensational science studies to make them more shock-value.
Polar air hasn't ever stayed at the poles.
No, it hasn't, but hasn't historically moved so far from the poles with regularity as it does now. It's almost a guarantee that somewhere far from the poles will have an astoundingly cold winter and somewhere else will have an astoundingly warm winter now. What used to be a rare occurrence is now happening every year and it's travelling further than what used to be the norm.
"That's the way to do it" - Punch
So, you have your own rationalization for doing nothing.
If it weren't for deadlines, nothing would be late.
https://www.npr.org/2016/05/16...
http://www.pewresearch.org/fac...
Eat Shit yourself fucktard. The level of how much you "like" something, has zero impact on its validity.
...Perhaps even worse, at least for us, is that it's looking like such transitions don't happen smoothly. As the thermal engines driving weather destabilize, weather patterns become less predictable from year to year, and the rate of crop failure increases considerably as a result. And when people get hungry, wars break out.
Sounds like a testable hypothesis. In the last century global temp has risen around 1C after having remained comparatively stable prior to that. One could take global crop yields, and compare the annual trends against the change in global temperature.
The trouble is, that your hypothesis of increased crop failure, and presumably decreased global yields(else if yields don't drop who cares), presupposes that all other things remain equal...
Of course, global crop production has been trending persistently upwards as temperatures have also trended up. Numerous advances in crop technologies and techniques being a portion, and additionally regions impacted by climate change where conditions become too warm/cold/dry/wet for one crop are rotated for others. Farmers don't stubbornly plant the same crop for decades when conditions change, even if that would make projecting trends easier...
"Global warming deniers" and "highly intelligent people" are mutually exclusive categories.
Oh wait, maybe there's a tiny intersection in the venn diagram, where they overlap with the "selfish machiavellian lying assholes" category. They say they deny it, but only to further their selfish ends of not having to make any lifestyle or policy changes. If they are intelligent, they know their denial stance is just posturing for effect.
Where are we going and why are we in a handbasket?