UN Climate Report Fails To Capture Arctic Ice: MIT
An anonymous reader writes "The United Nations' most recent global climate report 'fails to capture trends in Arctic sea-ice thinning and drift, and in some cases substantially underestimates these trends,' says a new research from MIT. The Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report, released in 2007, forecasts an ice-free Arctic summer by the year 2100. However, the Arctic sea ice may be thinning four times faster than predicted, according to Pierre Rampal and his research team of MIT's Department of Earth, Atmosphere, and Planetary Sciences (EAPS)."
The anti-Global Warming people will ignore it. The details don't matter, the truth doesn't matter, and if there's the slightest mistake, error, or just plain poorly worded statement, they'll treat it as proof of a conspiracy dedicated to driving man back to the Stone ages, except with less Jesus and more abortions.
The US military has detailed information on ice sheet thickness going back 50 years but it's mostly classified. The Russians have similar information and I think their excitement recently over exploiting the arctic shows where they think the trend is heading. They aren't looking at a 100 years from now but in the next decade or two. Most of the discussion is over coverage of the ice but the more telling is thickness. As the ice thins a huge part of the arctic could be exposed in a single season from a major collapse in sea ice.
Screw ibtimes, worthless ad-walling craps.
http://www.sciencedaily.com/releases/2011/08/110811113956.htm
Typical science news "ZOMG our predictions could be wrong, but we need $x million to do more research about if we are right or not". Everything is made into a crisis to get more funding. Just look at all the hyped up illnesses in the past decade, if all those "predictions" were right all of us would be dead with bird flu/swine flu/MERSA/SARs.
Taxation is legalized theft, no more, no less.
Interesting that /. has categorized this article as "Politics" instead of "Science."
Not that I'm complaining, necessarily.
sig has been sent away for a few small repairs...
That is the OPPOSITE MESSAGE from what the story actually says. Does slashdot even have editors anymore?
I was his colleague. He did refuse to play the political game. Also there was a strict policy against snorting whiteout that he was always running into, but it was probably more the political thing.
It would be different if I could ride a polar bear to work, though.
Waltz, nymph, for quick jigs vex Bud.
Cutting carbon emissions doesn't mean we can't have cars. It means that cars need to be more energy efficient in the near future and run on energy not derived from fossil fuels in several decades. Reducing carbon dioxide emissions doesn't mean doing without. It seems that most people who don't want to reduce carbon dioxide emissions really just don't want to lower their standard of living. Fortunately, we can reduce carbon dioxide emissions significantly and keep our standard of living.
What a fool believes, he sees, no wise man has the power to reason away.
That is correct, for floating ice.
But is only part of the picture. liquid water's density also has a small temperature dependence. Warm water is less dense than cold, although a degree or two isn't going to be a significant percentage, it can still add up to noticeable changes in depth when you're talking about a column of water 4 km deep - it only takes a .04% increase in volume to equate to an extra 2 meters in depth...
Can you be Even More Awesome?!
Warming a fluid system, such as a planet's atmosphere or water in a pot, results in more, and more vigourous motion. Weather will become more violent.
That fails to explain why there are colder outer planets with significant atmosphere that have orders of magnitutude more violence. And the place on earth with the higest average wind is Antartica.
I guess a heated pot is not a good approximation for a planetary weather system. So - no - I don't really buy the higher temperature = more violence meme. Nor the 'once in a lifetime' crap the media regularly dishes out.
I think you're pretty confused. The 2007 report failed to include the effect of ice sheet loss on sea level rise. The 2007 IPCC report did include sea ice loss, which has other effects, such as decreasing the albedo of Earth which speeds up warming. One thing in particular sea ice loss doesn't do is raise sea level, because the ice is floating.
What a fool believes, he sees, no wise man has the power to reason away.
Independent, truly progressive thinkers, can now see this 'crisis' for what it truly is (a wealth redistribution plan, and a power grab)
I'll bite. Who exactly is going to profit here? The uber-powerful renewable energy industry? I've never gotten a straight answer as to who is buying off all these climatologists to get fossil fuels banned and profit from it, it's always "The government" or some crack about Al Gore.
By the way, my problem with those two answers: 1. The government is doing just fine with it's "Terrorist / child porn" power grab, making up a whole other one is complicated even for the government. 2. I have no interest in talking to people who are convinced that a former vice president is the evil genius behind global warming.
So some people try to change other people's lives and livelihoods.
How is that happening? I have just as much freedom if my electricity comes from nuclear or solar power as I do if my electricity comes from coal. It will cost more, but look up external costs
> I might add to that a natural volcano eruption produces so much CO2, that our silly civilization cannot produce in a half a century.
http://www.bgs.ac.uk/downloads/start.cfm?id=432
Every volcano on earth put together releases 1% as much CO2 per year as humans do.
I prefer to believe that you were quoting a source you trusted, rather than deliberately trying to cloud the issue. Now you know something important about that source's trustworthiness. Reason from there to an assessment of that source's motives.
But in fact 18000 did die,
Every July, I dress up in my Red, White, and Blue and tell people about the ATTACK on this country by H5N1! The flue hates our Freedom!
They ask, "How can Flu hate our Freedom!"
And I respond, "it's because we're Free!"
If that's true, they say and it was about Freedom, then why didn't the Flu attack Sweden?! I say, "IT DID! That's how treacherous it is!
I've protested! And no one pays attention, but we wake up and find our nation ruled by the law of the Flu, they'll wake up! They sure will!
> It'll also give us time to weed out alternate explanations for the perceived global warming such as changes in solar activity, orbital configuration, or other non-anthropogenic possibilities.
What's an example of one that's not already been weeded out?
Solar output has been measured by satellite since 1978, http://earthobservatory.nasa.gov/Features/ACRIMIII/Images/solar_irradiance_right.gif. Orbit cycles have been understood for a long time.
Ice melting is a positive feedback mechanism. Less ice means less reflection, which means more heat gain, which means less ice.
Underestimating ice melting would mean underestimating temperature increases.
According to the Mauna Loa Observatory we passed 350 ppm annual average CO2 in 1990. Next April we're scheduled for our first 400 ppm observation and five years later our last under 400 ppm observation if trends continue. Since there's no way anybody's going to reverse the trend before then, 400 ppm is not an achievable target. 450 ppm isn't even an achievable goal. 500 might be doable - that's a 60 year target.
Help stamp out iliturcy.
That fails to explain why there are colder outer planets with significant atmosphere that have orders of magnitutude more violence.
Lol wut? The atmospheres of the outer, "colder" planets are quite unlike those of the Earth. A lot of factors can explain the "more violent" weather -- composition, energy, tidal effects from massive satellites, energy output from the planet involved (Jupiter outputs much more energy than it gets from the Sun), effects due to faster rotation, etc -- the outer, "colder" planets' atmospheres are nothing like that of the Earth.
Anyways, yours is a non-argument -- "hotter" and "more violence" in this context are only meaningful when talking about Earth, we're comparing "relative" violence of the same atmosphere, not some absolute "violence" measure valid across all bodies of fluid that wrap a planet.
I have the feeling that all these arguments are just distractions from the fact that everything has to change. It doesn't matter how much carbon can't be sequestered by the current rates of logging, if the whole world did the same as western society our forests would be decimated. It doesn't matter how much greenhouse gases are put out by our cars, just the resources required to supply the whole world would eliminate our resources. It doesn't matter how much methane cows give off, if everybody ate meat like the States all of our fresh water supply and arable land would be contaminated and barren.
None of it matters, it's just skating around the issue that the way we live is unsustainable, but we somehow feel ok with it because only we are doing it and not the whole world. How long are we going to let our own greed and fear of change prevent us from tackling the big picture and not having snot fights over the tiny little details?
Don't complain about syntax, grammar, or spelling. There is no.hell like input on android.
Not really. Reducing carbon emissions only delays the point where we've burned all the useful carbon in the ground. Since the CO2 will stay in the atmosphere for over 1000 years, it doesn't really make a difference whether we burn all the carbon in 100 years or in 150 years.
If you want to keep CO2 lower, we need to decide to leave some carbon in the ground, and never use it. At the same time, we should probably find a way to sequester existing CO2.
All well and good, but what about the fully foreseen consequences?
Global warming is one part of a two-part catastrophe, the other being ocean acidification. The oceans are taking far, far more hurt than the land. The bottom of the food chain (coral, plankton, etc) that ultimately gives us fish that make up a significant part of our diet (and many jobs) is in severe danger, and seeding the oceans with iron might just cause mass extinction.
We need to fix the CO2, not just the warming, else we devastate ocean life.
If we can do that through advanced science, lets do it. However, AFAICT, the best method we currently have is mass reforestation.
You agree with me.
There can be no doubt about the science, when so many experts agree. What's the point anyway in their childish insistence that predictions must be accurate. After all, this is a complex system those scientists are dealing with. I mean, hell, we don't even really understand how the ice ages came about or what exactly happened to the Sahara in the last couple of thousand years. We don't even know what the weather will be like next Sunday.
You can't really expect those scientists to get everything exactly right the first time, they are scientists, they can't do miracles. And besides, science is changing all the time - it's nothing unusual.
the right is part of a community, they derive their sustenance and riches from it, but through either blindness or tactically calculated greed, they deny they have to give anything back to continue the money flow. after a few such assholes, the community is withered, and poorer, and everyone makes less money
the riches in your bank account is a direct reflection of the riches of the community you live in. rich community = rich individuals. no one makes money by themselves. on one is an island. no matter how many idiots think they are. the money in your pocket is a reflection of the exertions of everyone else. so you OWE motherfucker, so cough up, you selfish shortsighted bastards: pay your fucking taxes and support the healthcare and education of all. or they get poor, then YOU get poor, idiots
you pick fruit from an orchard. so help maintain the orchard, give back. or the orchard withers, and there's no more fruit for everyone. this idea you are an independent entity whose money is magically derived from only your exertions is egotistical blind madness that will destroy us all, kill the middle class
intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
Yes, an uneducated moron would think the stock market and climate systems are the same. Because only an uneducated moron would compare forecasting an unbounded chaotic system with a bounded quasi-chaotic physical system dictated by a set of physical equations.
To illustrate, we can predict that temperatures in the winter in the northern hemisphere will be cold. You don't even need historical data to show this as a trivial 2D energy balance model can give an decent good approximation. The more details you add to this model, the more accurate it becomes. Then you can take this model and a set of initial conditions and let run forwards to see how well it predicts the climate.
You can even do this with a pure "zero D" energy balance model, though it will only show you the overall temperature of the globe. Once again, even a zero D model will give a fairly accurate prediction of global average temperature.
You compare this to the stock market, which has no set of governing equations. You can't create some model based on some characteristics and predict with any accuracy what will happen the next day, let alone the next year.
Climate models are not constructed based on hind sight. They are constructed based on physical equations. They are then COMPARED against historical data to determine if the model is accurate.
~X~
Now, give me funding or else your children will be raped to death by walruses.
If you were blocking sigs, you wouldn't have to read this.