by Indur M. Goklany
Phil Jones famously said:
Kevin and I will keep them out somehow – even if we have to redefine what the peer-review literature is!” – Phil Jones 8/7/2004
Today, we have an example:
“[T]his is also the way science works: someone makes a scientific claim and others test it. If it holds up to scrutiny, it become part of the scientific literature and knowledge, safe until someone can put forward a more compelling theory that satisfies all of the observations, agrees with physical theory, and fits the models.” – Peter Gleick at Forbes; emphasis added. 9/2/2011
Last time I checked it was necessary and sufficient to fit the observations, but “fits the models”!?!?
So let’s ponder a few questions.
- 1. Do any AOGCMs satisfy all the observations? Are all or any, for example, able to reproduce El Ninos and La Ninas, or PDOs and AMOs? How about the spatial and temporal distribution of precipitation for any given year? In fact, according to both the IPCC and the US Climate Change Science Program, they don’t. Consider, for example, the following excerpts:
“Nevertheless, models still show significant errors. Although these are generally greater at smaller scales, important large scale problems also remain. For example, deficiencies remain in the simulation of tropical precipitation, the El Niño-Southern Oscillation and the Madden-Julian Oscillation (an observed variation in tropical winds and rainfall with a time scale of 30 to 90 days).” (IPCC, AR4WG1: 601; emphasis added).
“Climate model simulation of precipitation has improved over time but is still problematic. Correlation between models and observations is 50 to 60% for seasonal means on scales of a few hundred kilometers.” (CCSP 2008:3).
“In summary, modern AOGCMs generally simulate continental and larger-scale mean surface temperature and precipitation with considerable accuracy, but the models often are not reliable for smaller regions, particularly for precipitation.” (CCSP 2008: 52).
This, of course, raises the question: Are AOGCMs, to quote Gleick, “part of the scientific literature and knowledge”? Should they be?
- 2. What if one model’s results don’t fit the results of another? And they don’t—if they did, why use more than one model and why are over 20 models used in the AR4? Which models should be retained and which ones thrown out? On what basis?
- 3. What if a model fits other models but not observations (see Item 1)? Should we retain those models?
I offer these rhetorical questions to start a discussion, but since I’m on the move these holidays, I’ll be unable to participate actively.
Reference:
CCSP (2008). Climate Models: An Assessment of Strengths and Limitations. A Report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research [Bader D.C., C. Covey, W.J. Gutowski Jr., I.M. Held, K.E. Kunkel, R.L. Miller, R.T. Tokmakian and M.H. Zhang (Authors)]. Department of Energy, Office of Biological and Environmental Research, Washington, D.C., USA, 124 pp.
LazyTeenager says:
“Engineers should get over the professional arrogance thing. Its become something of a joke.”
You have it backward:
http://img94.imageshack.us/img94/6774/modelsh.jpg
LazyTeenager says:
September 3, 2011 at 5:27 pm
“Makes me wonder why you would rather not go to a library and but instead write a letter to a university, put other people to a whole lot of trouble and then rummage through a whole lot of personal correspondence to gain some understanding of computer models.”
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I’m lazy.
Sometimes, I wonder why you all bother. I appreciate that you do; apparently you are educating some.
I’m a climate scientist since I’m a computer scientist. I have yet to see a single argument that persuades me that AGW is either a threat or real in any sense.
The IPCC is owned and run by the UN, an organization which wants to be the government for the entire inhabited world, by definition. Why is anyone surprised that every production they produce has the intention of misleading and the consequence of enslaving anyone who will open their ears to them? A liar despises those to whom he lies. When they open their mouths, they lie. They cannot cease from sin. Everyone that works for them is like unto them.
Exactly which analysis of the past and present, or prediction of the future has the UN produced that doesn’t elicit calls for further subjugation of some part or all of mankind? Any theory of the past, present, or future that elicits such calls is already suspect, and likely demonstrably wrong. That’s my theory based on all historical evidence.
A scientist worth his salt should be laughing at someone asserting the plausibility that the UN and its followers produce any kind of actual science.
squareheaded says:
September 3, 2011 at 8:
The IPCC is owned and run by the UN, an organization which wants to be the government for the entire inhabited world, by definition.
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To point out the obvious. Being a computer scientist does not give you special insight into either climate modelling or the politics of the UN as it relates to the IPCC.
Your IPCC beliefs derive from what you have read on your own personal favorite Internet blogs. The stories you read are made up by people just as knowledgable as yourself.
Just because you like what you are told does not make it the truth.
models are any human’s desire to ‘play’ god…
that’s why doctors get a corpse to learn from…. no model can ever be everything (God).
hence the term. model.
unless slavers find a way to equate God with a human creation
Smokey says:
September 3, 2011 at 6:43 pm
LazyTeenager says:
“Engineers should get over the professional arrogance thing. Its become something of a joke.”
You have it backward:
http://img94.imageshack.us/img94/6774/modelsh.jpg
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Well the graphic attached to the link is an ingenious insult to climate modelers. Should I conclude that it was devised by an engineer? If so it does prove my point about professional arrogance.
Or did you not understand that “it” my last sentence referred to professional arrogance.
u.k.(us) says:
September 3, 2011 at 6:49 pm
LazyTeenager says:
September 3, 2011 at 5:27 pm
“Makes me wonder why you would rather not go to a library and but instead write a letter to a university, put other people to a whole lot of trouble and then rummage through a whole lot of personal correspondence to gain some understanding of computer models.”
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I’m lazy.
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I would not have thought so. It takes a lot of motivation and a lot of work to dredge through people’s emails looking for some snippet that can be used to discredit them.
It’s not just that the climatologists have their models too simple. The fact is that engineers expect their model to withstand reality.
Imagine if Boeing were to build a series of airplanes each based on a different computer model and then try to sell them to an airline saying, “these haven’t been field tested but we believe the average of the models might be correct”.
As a science teacher in a suburban public school, I catch grief all the time about how American high school students apparently stack up against their international peers in science, but I can guarantee my students walk out of my classroom with a better understanding of the scientific method than this.
RockyRoad says
Have you ever personally run computer models? I have–thousands of them.
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Well you are a brave man to admit to running models here. Many here hold in utter contempt both models and modellers.
Supposedly its not possible to get a useful answer out of models and if models are improved in any way it’s called cheating.
I assume that you think that your modelling exercises are useful!!!!
VigilantFish says
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ulations and catches. Some Canadian fisheries managers -the ones in charge of the Northwest Atlantic fishieres- felt so confident about these models that they saw no need to develop robust data sets independently to monitor the state of the fish stocks.
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As it happens I agree that models need to be backed up by robust data sets.
However as a practical matter robust data sets can never cover the the whole range of interest. So in practice data allows the models to be spot checked. There is good reason to assume that the model can fill in the gaps between observations or less reliably outside observations.
jorgekafkazar says:
September 3, 2011 at 6:21 pm
LazyTeenager says: “Myrrh, the thing you are missing here is the concept of a feedback loop….From a modelling perspective it should be possible for the models to reproduce the behavior where an increase in solar energy retention by the earth causes an increase in CO2 800 years later..”
So the earth’s energy retention goes up without benefit of CO2 greenhouse effect, THEN the temperature rises, and, FINALLY, 800 or so years later, the CO2 goes up. If so, this proves…what? The existence of a chronokinetic greenhouse effect? Most amusing. Did you intend it to be?
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Well I don’t think we need to invoke exotic processes like the chromoly Eric effect.
Here’s how I understand the feedback processs involved. Start off with an ice age earth. The known conditions are:
High ice albedo
Zero atmospheric water vapour
Relatively low CO2.
The wobbles on thorough space and starts to pick up more solar energy. But the amount of extra energy is not enough to melt the ice. The effect needs to be amplified somehow.
So the positive feedback loop to accomplish needed to accomplish amplification is:
1. Raise temp by solar
2. Outgas CO2 from ocean
3. Raise temp by GHE
4. Outgas more CO2 from ocean
5. Raise temp even more by GHE
6. Outgas more CO2 and evaporate water
After steps 5 and 6 repeat a few times we get to present day temperatures.
The physics based GCMs should have the capabilities to run, starting from the conditions of the last ice age, and be able to reproduce the 800 year delay between temperature rise and CO2 concentration you are so keen on.
jorgekafkazar says:
September 3, 2011 at 11:33 am
Next, special thanks to Lazy Teenager for revealing his ignorance of the meaning of enumerate, giving a certain specialness to his comment, which provided many easy shots and much amusement here.
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I am always happy to provide a bit of comic relief.
Oh the boredom of the trite arguments …of course it’s not the models that should be disparaged but their asinine use as ultimative descriptors. Yawn.
LazyTeenager:
At September 3, 2011 at 4:14 pm you assert;
“Blogs, any blogs, but especially blogs whose agenda is the make AGW go away no matter what, will not tell you anything about climate models.
You need to go to the local university library and read the papers describing the models.”
No!
Read my post above at September 3, 2011 at 2:18 pm and if you want to dispute it then “go to the local university library and read the papers describing the models” that are explained in that post.
But your several posts demonstrate you won’t read it because you are too lazy to bother reading anything except support for your deliberate and self-imposed ignorance.
Richard
LazyTeenager says:
September 3, 2011 at 11:09 pm
“Here’s how I understand the feedback processs involved. Start off with an ice age earth. The known conditions are:
High ice albedo
Zero atmospheric water vapour
Relatively low CO2.”
Even in Antarctica in the dead of winter atmospheric water vapor never approaches zero. Those advancing glaciers that are the highlight of ice ages have to come from something.
At the risk of appearing naïve, it seems to me the problem with “models” is the invention of the computer. Once upon the time, the model was something like:
F = ma
or
E = mc**2
Nobody needed to argue about what the model was, who owned it, what it meant, etc. You could go off to your laboratory or garage and try to see if the thing fit observation. With the advent of computers and the “computer model”, the clear, unambiguity of the “model” disappeared into the vastness of 10s of thousands of lines of code. Science now has an epistemological problem it has not had for centuries. Just what constitutes a scientific model or theory in the computer age? How do we distinguish a climate model from Doom? What constitutes falsification? Indeed, how can you even keep tract of versions and refinements of the thing? At the current state of the art, it would seem that computer models are somewhat like rough sketches scientists of a former age might make to motivate a real, rigorous model. But they are not portrayed this way; instead they are advanced as actual scientific theories complete enough to be peer reviewed and serve as the basis of momentous policy decisions. Proponents of computer models should back off, way off, until fundamental problems about the meaning of these things is settled at a much higher level of abstraction than “climate models”. Of course, they won’t. Their meal tickets and those of their political allies require immediate acceptance of whatever code they write as “science” on the same level as that espoused by Newton or Einstein. It clearly is not and it only gives science a bad name by claiming that it is.
LazyTeenager says:
September 3, 2011 at 5:41 pm
Myrrh says
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? We have real data, such as Vostok and countless other studies, which show conclusively that CO2 lags behind temperature by c800 years – a real modeller disciplined in real science wouldn’t bother including it as a driver, let alone a ‘primary’ driver..
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Myrrh, the thing you are missing here is the concept of a feedback loop. Solar radiation uptake by the earth and CO2 in the oceans are likely part of a feedback loop.
And what you are missing here is that “are likely” doesn’t cut it in real science when referring to something that has no logic in reality because “feedback loop” is not proven re the properties of carbon dioxide and the great changes throughout the ice for the last 800,000 years.
You’re claiming that feedback exists (generic you re the models), but nothing in the data we have, a considerable amount of it, shows any sign of such a thing, CO2 always showing as an effect following great and rapid temperature rises and falls, including staying at highs when temperatures plummet, etc., etc. There is no evidence that CO2 is a driver of temperatures, and you and your ilk never present anything cogent to back up your ‘idea’, the imaginary “most likely feedback loop” irrelevant unless you can show it is relevant.
If you’re going to make such an imaginary claim the basis of your argument that CO2 is the major driver, you should get your generic act together. But you generic quite frankly appear ridiculous because there is no internal coherence in the claims you make – for example, this imaginary “feedback loop” contradicts the other ‘proof’ bandied around, that “CO2 levels haven’t changed for the last 800,000 years and it’s therefore our fault that the current warming is happening because we’ve increased carbon dioxide levels”.
Just to make this really clear. So what you’re actually saying in that ‘soundbite meme’ from the AGWScience fiction meme manufacturing department, is that there is no feedback loop.
And, the second fiction meme is actually saying that all the great changes in and out of interglacials for the last 800,000 years happened without carbon dioxide playing any part at all.
I’m really sorry you take such bull seriously.
LazyTeenager says:
September 3, 2011 at 4:44 pm
“So a climate model is like a house made out of bricks. The house may have weaknesses because some of the bricks are not as strong as the others. But generally the house will stand and function like a house.
If you want to panic about models then you you need to consider these engineering models are used all over the place, you just have not heard about them. So the panic is selective.”
LT are you a bot? You have been repeatedly told that the issue are not models as such but the idea of forgetting about checking models against reality and you keep on posting without trying to understand and digest the answers.
Models are just tools to learn and try to understand how reality works. They are no substitute for reality. Models based on CO2 as drivers fail miserably to describe long term weather oscillations such like El Nino, La Nina so they are even less suited to describe longer term climate. They fail to describe past climate events so are less suited to describe future climate events.
Computer models that would model credibly past events may better describe future events but still are only models only toys in the end and may be proven wrong by reality.
Your argumentation goes at the level of a bot, so why my question. There is no need for sophism here, but of a constructive discussion. Are you able of such?
Re models – http://www.forecastingprinciples.com/files/WarmAudit31.pdf
I think an excellent look at the role of ‘models’ in AGWScience re the thrashed out standards in forecasting.
There’s a lot in this and difficult to choose.., but that AGWScience and its models are being promoted as if they have an intrinsic empirical integrity falls to pieces on closer inspection:
That’s all the models are, opinions expressed in mathematical language, passing themselves off as authoritative.
And in covering up this lack of clear method and relevance to the real world, the above is typical, the constant generation of fudging.
In other words, your guess is as good as mine.. The IPCC is expert in one thing, in presenting an illusion that the base is real science and that proved beyond all reasonable doubt, supporting ‘the deniers are genocidal maniacs for ignoring the models and consensus peer reviewed certainty’, but stripped of the bluff we have the above showing there’s nothing more than opinion hiding in a ‘cloak of science’ at the heart of it, couched in mathematical language to further obfuscate the paucity of any real intelligence, both meanings. And then they have the nerve to cover their posteriors while lying:
My bold.
Magical properties for carbon dioxide, when it’s not being demonised as a toxic, [it’s not a toxic in real physics] and choose whatever parameters want to imput to create elaborate fictional worlds out of models.
Yes, definitely re-defining scientific method. And now we have it on good authority (NASA) that aliens are going to blast us away for daring to produce the dangerous levels of carbon dioxide as proved by these models.
Through force of habit, I have consistently tied my left shoe before the right for the past ten years. I programmed a computer model that correctly hindcasted this ritual with 100% accuracy. Based on the available data from the past ten years, it has also forecast with 100% certainty that I would tie my left shoe before the right for the next ten years.
Today I tied my right shoe first.
LazyTeenager says:
September 3, 2011 at 5:54 pm
Bill Yarber says:
September 3, 2011 at 5:49 am
As an AeroSp Engr student, I was taught to develop and use models to simulate flight dynamics. We were also taught that if the output of the model(s) did not match observations, you needed to change the model, not tweak the observational data. Maybe climate scientists should bring a couple of engineers into their groups?
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The climate modelers do for climate exactly what you do for airplanes. Climate modelling resembles engineering more than science.
Engineers should get over the professional arrogance thing. Its become something of a joke.
If engineering resembled climate “science” in any way, mankind would still be in the stone age. What climate modelelers build isn’t based on reality, but on a fantasy, resulting in frankenscience.
Of course, it isn’t engineers who need to set aside “professional arrogance”, but C02-obsessed and delusional climate modelers.
Myrrh says:
September 4, 2011 at 5:51 am
That’s all the models are, opinions expressed in mathematical language, passing themselves off as authoritative.
This is the key. Models are simply a translation of a written language “opinion” (abstract idea) to a computer language. Not really different that translating from English to Russian. The ONLY difference is we can now view how the “opinion” performs in time. That is it. There is NOTHING special about the code that is incorporated in a model. And as such, the models are no better than the “opinion” of the person/s who developed the model.
I actually think lazyteen understands this at some level. His problem is that he BELIEVEs the “opinion” is actually the same as a fact. Or, at least very close to a fact. I think most here think that “opinion” is nothing more than a educated guess. So, it really gets back to whether the “opinion” is valid.
I suspect that most skeptics would accept models based on verifiable facts. Of course, that means observable data. The warmist contingent appears to be willing accept that the verification is unneeded because of the dangers we might face by inaction. But this position is nonsensical because it’s only based on an “opinion”. There are any number of potential problems that could affect humanity. To choose one over many other well known problems (like mass starvation in Africa) and spend billions of dollars on it is almost insane.
The scientific method has been redefined for climate change to include: unconnectable anecdotal information, with the linch pin of global warming theory being woefully inadequate global climate models using dubious initial conditons. Rarely have past projections from these GCMs panned out; they are less reliable than flipping a coin. GWT begins at Mauna Loa starting in 1958. Everything else older than this must be ignored.
CO2 readings of 435 ppm were recorded in 1825, 45 ppm higher than today (Beck 2007).
Temperature data more than 100 years old must be discarded, because it would skew the warming toward normal or even cooling. This is the ‘homogenization’ process being carrried out by Dr. James “thumbs on the temperature scale” Hansen of NASA GISS. (ie: Orland CA)
Pay no attention to the GRIP2 ice core data showing that the CO2 increases occuring about 800 years AFTER the temperature increases.
Ignore the data 6E8 years ago showing CO2 levels were 18 times higher than today (GEOCARB).
Forget the 12C to 22C temperature band that the world has lived in for the last 5.5E8 years (PALEOTEMP) , showing that today’s temperatures of about 14.5C are only 25% off the bottom of the normal range.
Disregard the correlation between cosmic ray modulation by varying solar wind on global cooling cloud formation.
And whatever you do, turn your back to planetary mechanics, which is THE sole driver of climate
change. Planetary mechanics is the elephant in the room of climate change. CO2 is the flea on the elephant’s ass, and can only come along for the ride.
In certain undisciplined disciplines, most egregiously Climate Science, Pal Review has so degraded the quality of published literature that internet fora now provide a far more comprehensive and rigourous sampling and challenging environment.