
Originally Posted by
Tristam
I cannot stress enough how much you're maligning an entire field, without realizing that the field has satisfied every condition you've asked of it.
1. The amount of data is huge, from temperature records on earth, to temperature records in the upper atmosphere, to sea level rise, to ice sheet mass, paleoclimate, and so on. This is not an isolated group of scientists secretly e-mailing each other in ivory towers responsible for everything we think we know about AGW. This is a multidisciplinary field incorporating data from many different teams. Some data arrived before the models, some arrived after, but the more data we have the more confidence we have in the models. We also know how much we're changing the gas content of the atmosphere via direct and indirect measurements. You posted a sample of the graphs from a small selection of papers that discuss all this. Arrhenius predicted AGW, then came data, and the data demanded an explanation. If AGW isn't satisfactory for you, how do you explain temperature changes over the past 100+ years? (hint: alternative explanations have all had their time, they've all failed the test, and based on *data* there is a less than 5% chance that the "fluctuation" over the past 100 years could be natural.) You sit here and say that the noise in climate records is statistically significant. I think you need to show that explicitly.
I need to show that "noise" in climate records is statistically significant?
I'm guessing you mean I need to show that there is reason to doubt the claim that "the warming could not be caused by something which was recorded accurately, and has natural factors only", yeah?
http://c3headlines.typepad.com/.a/6a...f68a970b-800wi
http://bahn.pbworks.com/f/Figure%203%20-%20o2_temp.gif
Well, that is a much larger period of time than you're interested in, but if you can read, you can see that there have been significant peaks following major glaciations, something about Co2 also... something something, rabble rabble.
http://c3headlines.typepad.com/.a/6a...12701fa970b-pi
Here's a sample of temperatures from the end of the last major glaciation, up to a peak, and on to the present day.
Certainly the noise there is far too large for your standards though.
http://c3headlines.typepad.com/.a/6a...02e2ebb970c-pi
Here are sediment samples, you know... layers of dirt laid down in a particular fashion which contain useful data regarding historical conditions.
The sea being warmer than it is today doesn't prove shit though, you're right. My bad.
Guess I should check on the modern period, since the noise in the past is clearly too large to be considered.
2. The model(s) fit the data *ONLY* if you include forcing from man-made CO2, if you artificially hold CO2 steady over the past 100 years in the model, it does NOT fit the data. Repeat: You must include changes in CO2 levels in your model to reproduce the observed temperature changes. It is impossible to precisely replicate the entire climate in a test tube, or in a computer. Models do the best they can with the data they are given, no more, no less. They are only part of the sum of evidence for AGW.
Wait wait wait, the models fit the data that shows what about Co2 and temperature again?
This?
http://c3headlines.typepad.com/.a/6a...126abb8970b-pi
Wait, let's line the scales up more favorably for the hypothesis!
http://zfacts.com/metaPage/lib/zFacts-CO2-Temp.gif
Hmmm... and it ONLY fits when we use Co2?
http://www.kowabunga.org/images/pict...sc/sunspot.gif
Uh... whoops, let's just forget that happened.
Moving on!
Here we go:
http://www.norcalblogs.com/watts/ima...2-Temp-SM2.jpg
Now that looks much scarier, you're right.
The more we zoom in on the smaller periods of time, the less noise that shows up! Let's ignore that we're drastically reducing our sample size, it's proving our point!
http://tizona.files.wordpress.com/20...re-lately2.jpg
Wait... pay no attention to that.
Look how scary this is instead!
http://www.mongabay.com/images/2006/graphs/ipcc-lag.jpg
HOLY SHITPISSING FUCKJESUS!
3. Other models DO fit the data, the Mann 2009 paper shows data from a number of models that all show the same thing.....AGW. There has been one published model which fit the data that did not include AGW, but it was shown to have simple mathematical errors.
Does AGW fit the data in a manner which allows "postdiction" of past climate states?
Did you know that should be checked?
I mean, it IS kinda fucking important to make sure you're not just blowing shit way out of proportion by checking to see if you can reproduce any arbitrary climate conditions which correspond to the input your model would have received at those times.
*shrugs*
Must be too hard to mess with, I figured the term "model" in there meant more than just "look at stuff like this Max asshole is and say shit"... am I a climatologist now?
4. Flaws in models are listed as uncertainties and so forth and they are discussed in the open air!!! Noone is presenting any model as perfect, but it is the best approximation of future trends given what we currently know about the earth, energy, and climate. You are also not required to falsify every existing model that contradicts your own, noone would publish anything if that were the case. You can discuss alternative explanations in things like theses, but that's part of the reason those things are up to 200 pages in length...or more... Sometimes models don't work out, I've seen models for certain things that look silly in retrospect once good data came out. But to date there is no good evidence that contradicts AGW. Good evidence would include a statistically significant decline in temperature (and not an artificial decline that fits two points, the first being the hottest year you can find on record). Good evidence would also include a natural process that significantly altered the energy budget of the earth over the past 150 years or so.
Don't find a decline that fits two points, and compare it against the Co2...
http://farm2.static.flickr.com/1380/...5f86ee3126.jpg
Pay no attention to that span in the middle... that's uh, a typo.
http://nordpil.com/static/images/car...rends_full.png
How did that get there?
Nevermind.
http://wattsupwiththat.files.wordpre...2/lansner2.png
Boosh, as you can see... uh... wait, the temperature records suggest shit is fluctuating in a fairly chaotic manner often observed in natural systems!
HOLY COCKWEASELS WRITHING AROUND IN GREASED UP PIG INTESTINES!
NATURE IS OUT TO GET US!
Finally, how on earth did they limit peer review dishonestly? That is a very serious charge and demands an explanation. Did you seriously not read that editorial I posted? There is skepticism and there is denialism, you are exhibiting the latter. Skepticism usually starts with a discussion of the uncertainties in models rather than a blanket denunciation of an entire field. Also, CO2 does not temporally correspond directly to temperature, the two are usually out of phase with each other, you cited graphs from papers that discuss this. Feedback loops, forcings, and etc. It's a fundamentally naturally chaotic system.
Perhaps though, prior rises in Co2 will show this magical link between exact Co2 increases raising temperature, and without them being out of phase, which kinda goes against the idea that they are uh... in phase.
What?
http://www.ferdinand-engelbeen.be/kl...img/epica5.gif
My god though, look at that hockey stick!
http://www.art.ccsu.edu/Gallery/2008...90CO2-Temp.jpg