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Tuesday, November 1. 2011Global warming, Pirates, etc.Dr. Merc does not seem to believe that we're all going to drown anytime soon. However, the science is settled (via Watts): there is probably or possibly a short-term (centuries) warming trend, if the data is worth anything (about which I am a skeptic). Nothing to think twice about unless you plan on bringing farming back to Greenland in 300 years:
Note the dramatic correlation with global CO2 emissions! None. Here's a better correlation which shows some real proof: Global temperatures caused by decrease of Mediterranean pirates. QED - it's a linear inverse relationship This cause is therefore settled science, and the obvious solution to refrigerate ourselves is to import more pirates into the Med until we are cold enough.
Posted by The Barrister
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Where did you find that pirates graph? That is absolutely hilarious.
I'm stealing it. I forget where that pirates chart is from, because I saw it once before in a discussion on correlation vs. causation.
It is not too dissimilar from the claim that "kneeling on the ball" will lead to victory in football because if you do a correlation chart on how many times the winning team kneels, there is overwhelming evidence that this will lead to victory. Sadly, few people recognize that correlation is NOT causation. Not even close. It's from the Church of the Flying Spaghetti Monster.
http://www.venganza.org/about/open-letter/ The first graph you show, which compares average temperature in Central England against the annual global CO2 emissions, would certainly give pause for thought if the temperature curve exhibited a significant change in slope at (nearly) precisely the point in time that the CO2 emission curve shoots up so dramatically. However, any mathematical correlation between temperature and the global warming effects of CO2 would have to be with respect to the total CO2 content of the atmosphere, not just the annual emission rate for that gas. The contrast between the identical temperature curve and the total atmospheric CO2 content curve would not be as dramatic as that shown in your graph, right?
Well, but the issue is emissions, is it not?
Anyway, I believe it is fairly well-accepted that, historically, atmospheric CO2 rises following climate warmings, not before. That's true. And even AGW believers will cede that fact, at the start.
However, they will then alter their point of view and say while Carbon Dioxide rises after warming at the start, soon it becomes a vicious cycle and the Carbon Dioxide becomes "the cause". It's outlandish, but they believe it. The B: Well, but the issue is emissions, is it not?
No, it's accumulated emissions. The B: Anyway, I believe it is fairly well-accepted that, historically, atmospheric CO2 rises following climate warmings, not before. There's a feedback mechanism. As the Earth warms, more CO2 and CH4 is naturally emitted from the oceans and soil. This causes more warming, and further increases in greenhouse gases. General circulation models are consistent with the historical data. The Barrister: Here's a better correlation which shows some real proof: Global temperatures caused by decrease of Mediterranean pirates. Correlation does not prove causation, of course. However, climate models are based on causative mechanisms, not mere correlation. I've built models (for finance) for years. All are built on causative models.
I can make them say whatever you want them to say. The idea that CO2 starts out as a result of warming, then becomes the cause, is very hard for me to accept. If each additional unit of CO2 provided equal warming value to the process, I'd be more likely to believe it. However, each additional CO2 unit undergoes a process of diminishing value. So if an additional 100 ppm adds .1 degree in warming, to get the next .1 degree of warming we'd have to add 200 ppm. For the next .1 degree, we'd need 400 ppm. The discussion, really, has very little relationship with CO2. It just happens that's where the discussion started years ago and hasn't budged. H2O is a far more plentiful greenhouse gas, and all the models they've built do not do a good job accounting for the water cycle. In addition, there are other greenhouse gases which are increasing at a faster rate and warm far more than CO2. Methane, for example. But the problem remains one of "we have to wait and see" because there is no clear linkage between anything. I can put together charts all day long that show an economic recovery, but that won't make it so. Once the model is built, you can plan to it, but the model can also prove you wrong. Unfortunately, I've seen that happen too many times. People think a model "proves" their belief. All it does is self-reinforce. So far, the models haven't lived up to their hype. Sure, it's been a short time frame, less than 20 years, and the models are improving, but they still are in their infancy as far as understanding it. Which is precisely why the East Anglia email scandal was so damaging to their cause because it exposed the flaws in some of their arguments, as well as how they have prevented peer review of articles which are skeptical of the theories. I'm firmly in the camp that warming is taking place, but I believe it's natural. I don't see how it can be any other way, at this point. Now, if by 2050 we are 5 degrees warmer, as the alarmists suggest, then I'd worry. I'll give them the benefit of the doubt and say if we have 5 years of increases to global temperature that amount to 1.2 degrees, then I'd admit I'm wrong. Until then? I'll stick with my belief that there is a political power agenda taking place. Bulldog: I've built models (for finance) for years. All are built on causative models. I can make them say whatever you want them to say.
They also have to be consistent with the data. Perhaps you can submit your own model to a climatology journal. Bulldog: The idea that CO2 starts out as a result of warming, then becomes the cause, is very hard for me to accept. It's called a feedback mechanism. Bulldog: If each additional unit of CO2 provided equal warming value to the process, I'd be more likely to believe it. Increased warming causes the atmosphere to absorb more water vapor, another greenhouse gase, and an example of forcing. Bulldog: H2O is a far more plentiful greenhouse gas, and all the models they've built do not do a good job accounting for the water cycle. In addition, there are other greenhouse gases which are increasing at a faster rate and warm far more than CO2. Methane, for example. Climatologists are quite aware that water and methane affect the atmosphere, and therefore, the climate. Bulldog: People think a model "proves" their belief. All it does is self-reinforce. Everything in science is a model. It's the fit of the model to observation that lends support to the model. In any case, it doesn't require a complex simulation to understand that a warming troposphere and a cooling stratosphere is an important indicator of greenhouse warming. I don't do climate models, but I'm aware of how they work, because every model works the same way. You provide the data, and derive an outcome based on the inputs.
The problem is what you don't know. What you don't know is always what makes the model inefficient. Which is precisely why models of this nature, with so many changing variables, uncertainties, and potential missing data, are the most inefficient. I'm aware that climatologists are familiar with all the factors which I mentioned. I worked at the Weather Channel for a period of time, and Heidi Cullen is their chief climatologist. I don't happen to be a fan, but I am familiar with her work. Even if they are familiar with it, it doesn't mean they understand it 100%. I am very familiar with the effects of supply and demand, but I don't claim to know 100% about the price elasticity of my product, because there are many variables which come into play. I make many guesses....just like climatologists. I'm also aware that the IPCC has removed language from their documents which discusses the speculative nature of the link between man and the climate. I have no problem people when believe what they want, but I do have a problem with unquestioning acceptance. I find it odd that people who accept the AGW argument because "experts" are working on it. These same people are often unwilling to accept the advice of "experts" in other fields, such as finance, economics, sociology or any other science which has a high degree of uncertainty involved. We are, and should be, skeptical by nature until the facts are fully available. I haven't seen any facts yet. Just some speculation about how things might turn out. Yet, so far, things haven't turned out at all the way we've been told they would. In fact, it's caused the "experts" to go back and refit their data. That, to me, sounds like self-reinforcing behavior. Imagine if I built a model that says the economy is improving for XYZ reasons. After 12 months, the economy is still struggling. So I go back and refit my data and I step up and say "well I did ABC wrong, but the model still shows the economy is improving, so just give it time." My credibility would diminish. Interestingly, that doesn't happen with climatologists. But, if luck holds, and the economy suddenly jumps 4% one quarter, I kick back and claim victory, even if it slumps over the following 5 quarters. Models are a hard to win game because the only thing they tell you is what you wanted to hear to begin with. In the case of warming, if the natural state is already warming (and there's data to suggest this), then nature is doing most of the work for you before you even got a chance to play your games and you have to filter out the effects. As I said, when the data comes in and proves that I was wrong to be skeptical, that man made (as opposed to the natural increase which occurs as a result of a warming climate) CO2 clearly and abundantly caused warming in excess of expectations, then I'll believe it. The data isn't there yet. Warming? Yes, I believe in it. Man made? Very questionable. Then you've got Doc's discussion point on whether it's even all that bad to be undergoing warming....but that's a whole different ball of wax. Bulldog: In the case of warming, if the natural state is already warming (and there's data to suggest this), then nature is doing most of the work for you before you even got a chance to play your games and you have to filter out the effects.
"Nature" is not a valid mechanism. Even though climate is a complex system, and there is still uncertainty, enough is known to support the conclusion that humans are altering the climate. You can say you haven't seen the data, but like most science, it's not something you can easily see. Most people only know about atoms or galaxies because it was something they learned in school. They don't have direct access to the data or methods. To discount the strong conclusion of climatologists the world over indicates a preconception. "Climate change is real." — National Academies of Science of Brazil, Canada, China, France, Germany, India, Italy, Japan, Russia, U.K., U.S. http://www.nationalacademies.org/onpi/06072005.pdf
#3.2.1.1.1
Zachriel
on
2011-11-01 21:19
(Reply)
I'm looking for the part where I said climate change isn't real. I didn't.
I agree the data is not something you can easily see. You have basically completely made my point. Like any very uncertain science, the data is apparent only after the fact. As you run up to the event, however, you are working primarily on speculation. Climatology is as well-defined a science as Economics, a science I'm fairly well informed on. And while I have disagreements with economists, let's say like Paul Krugman, I recognize that sometimes even he is correct about a thing or two. What differentiates us is how we choose to speculate about things, and what our motivating factors are. What's interesting to me is the complete avoidance of the political agenda that is playing out with climatology. If anything, the East Anglia email scandal should have (and for some did) cause them to rethink the approach. There was clear evidence that data was doctored. There was also clear evidence that skeptics were outcast and attempts to gag them professionally were made. I was told by "experts" that the economic stimulus would create or save jobs and keep unemployment under 8.0%, based on their models. That didn't work out so well, did it? And these guys know their job as well as I know mine, but I didn't think the stimulus would do diddly. Does that make me smarter than them? No, it just means that my speculation about how the economy works was more accurate. I have plenty of other models which I made where I wasn't quite as good. As I pointed out, so far the models aren't living up to the hype. I'm not surprised by this. I'm not sure what you mean by Nature is not a mechanism. If you mean nature doesn't cause anything, I agree. That doesn't mean what is occurring isn't part of a natural process.
#3.2.1.1.1.1
Bulldog
on
2011-11-01 21:35
(Reply)
Bulldog: Like any very uncertain science, the data is apparent only after the fact.
Climate science may be complex, but it is not the same as economics, which is trying to predict the behavior of humans. The basic physics of heat transfer are well-understood. The reason climate and weather are difficult to predict is due to inherent chaos, not due to unknown principles. The way to approach the problem of predicting deterministic, but dynamic systems, is by accumulating as much accurate data as possible. Bulldog: There was clear evidence that data was doctored. Multiple investigations cleared the researchers. The conclusions have been repeatedly confirmed. Bulldog: I'm not sure what you mean by Nature is not a mechanism. Saying "nature did it" is too vague as to constitute a valid scientific hypothesis. The fact is that the troposphere is warming while the stratosphere is cooling, a strong indication of greenhouse warming. Bulldog: I mean, if Nature is not a mechanism then what the hell is... Solar radiance is a mechanism. Evaporation is a mechanism. Uneven heating of the Earth's surface is a mechanism. They are all natural phenomena, but saying "nature did it" is too vague as to yield specific entailments.
#3.2.1.1.1.1.1
Zachriel
on
2011-11-02 07:42
(Reply)
"Nature" is not a valid mechanism."
Why, or how, do you say this? I know you're not, but it makes you appear an idiot. I mean, if Nature is not a mechanism then what the hell is... man, and his faulty deeds I suppose. Man, the most benign force to yet interact with the earth when compared to much larger effects from Nature.
#3.2.1.1.1.2
XRay
on
2011-11-02 00:31
(Reply)
Sorry a reply was misattributed above.
XRay: I mean, if Nature is not a mechanism then what the hell is... Solar radiance is a mechanism. Evaporation is a mechanism. Uneven heating of the Earth's surface is a mechanism. They are all natural phenomena, but saying "nature did it" is too vague as to yield specific entailments.
#3.2.1.1.1.2.1
Zachriel
on
2011-11-02 07:43
(Reply)
So, because 'nature' is vague we intercede science, a science which has only an, if one is honest in my opinion, slight understanding of the various forces that may determine or predict the present climate or future proclivities of such at any given moment of earth time.
I guess, truth is, is that I don't buy fear. Humans inhabited the Northern Hemisphere when it was cold and frozen waste. We'll likely adapt to whatever conditions confront us in the future without fundamentally remaking our present course. Or, simply, pussies aside, we'll fucking handle it, one way or another, or at least until the Sun explodes into a Red Dwarf and all our care is moot.
#3.2.1.1.1.2.1.1
XRay
on
2011-11-02 21:50
(Reply)
"Dr. Merc does not seem to believe that we're all going to drown anytime soon."
In all honesty, Dr. Merc doesn't care if the waters rise to the peak of Everest. Dr. Merc lives on a boat. :) Ok Doc - that's not fair.
Maybe you should change your name to Doc Noah? But unlike the biblical Noah, Dr. Merc doesn't have a guarantee from his Maker that the waters will recede after the Earth is cleansed once again. I also doubt that crotchety Dr. Merc would be able to survive in a real-life version of Kevin Costner's Waterworld.
"Wainscotting!" We've been mentioned on the telly!
As a farmer in the Pacific Northwest, we have had "abnormal" weather over the last couple years. But Heat was not part of the problem. Is climate change happening? You bet. Every morning I get up to different weather than the day before. If we cut down all the forests for agriculture lands, can we reduce the moisture in an area? Probably. Eighth grade science teacher showed us that water attracts. If you stand under a 100 foot pine tree and dump a 50 gallon barrel of water on it, you don't get very wet. Now cut the tree down, stand on the stump, and dump again. a little bit different outcome. But the water still didn't leave the earth system in either case, it's just its location. So why is it different for any other substance? They are all part of Earth's system, the difference is where they are at what point in time. To me, the bigger factors are an earth spinning at 16 feet per minute, while moving at 18 feet per second (in orbit) that is not constantly the same distance from a sun that is not constant in its heat release, of which the earth is getting only 1/365 (or how ever one determines the angle of what earth catches of the sun's rays) Take care when reading the bottom graph. There are not more pirates because the temperature rose. The temperature rose because there are more pirates.
Aye, mateys. PacRim Jim: Take care when reading the bottom graph.
Excellent point, PacRim Jim. A lot of people get confused about that. First of all, it's an INVERSE relationship between temperature and the number of pirates, i.e., as the number of pirates decreases, the temperature rises. Second of all, there is nothing we have to guide us as to which variable, pirates or temperature, should be plotted as the independent variable along the horizontal axis (the abscissa) and which should be plotted along the vertical one (the ordinate). For all that we readers know, it should be a plot of Y=number of pirates, versus X=temperature. With the axes interchanged. we would be able to claim that as the temperature rises, the number of pirates declines, but we would still have no basis for claiming there's a valid cause-and-effect to this correlation, even if it might appear to be a more plausible one than its converse.
Look at Somalia. There are far more pirates than 17.
Church of the FSM is no place to go if you want a sensible discussion. Of any type. DrTorch: Look at Somalia. There are far more pirates than 17.
The uptick in piracy explains why global warming is leveling off. QED We're in a Interglacial Period. We ought to be glad for some global warming; it makes for longer growing seasons, and if we keep making babies at the current rate, more food is a necessity.
Now- what causes changes in said Interglacials? Hmmmmm? |