Have the 1990 IPCC predictions been proved completely, unarguably and utterly wrong? Yes.
They predicted that if our emissions stayed the same, temperatures would rise by 0.3 C per decade, and would be at the very least 0.2, and the most 0.5. Even by the most generous rehash of the data, the highest rate they can find is 0.18 C per decade which is likely an overestimate, and in any case, is below the very least estimate, despite the world’s emissions of CO2 continuing ever higher.
Climate Scientist Matthew England called that “very accurate”. Since when did 0.18 = 0.3? (Shall we call it “climate maths”, or just call it wrong?) The IPCC had a whole barn wall to aim at, and a battalion of government funded gold plated AK-47s to hit the target, but they still missed.
Both England and the ABC owe Minchin an apology.
The un-Skepticalscience page uses a pea and thimble trick to argue the IPCC 1990 predictions were right (“Lessons from Past Climate Predictions: IPCC FAR”). As usual John Cooks site looks “technical” but uses complexity to hide the way they redefined the prediction in order to pretend it wasn’t wrong. Excuses excuses. Intellectual wordsmiths [...]
Here’s a new sign of the times.
Almost no one has gone from skeptic to believer on global warming. The conversion flow is nearly all one-way traffic. But on the Skeptoid site, author Craig Good is a “convert” of a sort, and I have to give him credit for writing the most sensible advice yet for believers of man-made global warming (see below).
But before anyone gets too excited, the two key questions here are: how much of a skeptic was he, and what did it take to change his mind? Answer, not much and not much.
This is not a big believer-awakening-moment of the Mark Lynas type, or another Judith Curry sort of conversion. Both of those were active, involved and outspoken in the climate debate. Craig Good’s entire skeptical position can be summed up in a few paragraphs, so yes, he qualifies as a skeptic, of the gut-hunch-it’s-wrong-but-haven’t-read-a-single-skeptical-paper-type skeptic.
If there are grades of skeptic from 1 to 10, he was only a 2.
So here’s the flash of insight, that’s never been seen before from alarmist circles
This is great stuff (if blindingly obvious):
To my friends on the Left: Do you want [...]
A comment from Tel late last year was so surgically cutting, it’s worthy of it’s own post. Un-Skeptical Science was trying to explain why climate sensitivity is high. The post includes formula’s and fancy graphs, and looks authoritative — yet underlying everything are errors of reasoning that nullify all the points that rest upon them. Things like assumptions about linearity (which means more or less, they make the mistake of assuming that all forcings and feedbacks operate at similar ratios and strengths when the planet is an iceball as they do when Earth hits a rare warm phase). An unmeasureable variable is the telltale signature of a fudge-factor. It is what you make of it. Fits better in a course analyzing postmodernistic intertexuality of Swahili neo-linguists.
Guest Post by Tel
This “Skeptical Science” post is an excellent choice to show how little credibility there is in the whole feedback house of cards:
It’s important to note that the surface temperature change is proportional to the sensitivity and radiative forcing (in W m-2), regardless of the source of the energy imbalance. The climate sensitivity to different radiative forcings differs depending on the efficacy of the forcing, but the climate is not [...]
Endorsed? Even the supposed blog experts on Climate Change can’t find an error.
The Guardian Blog has posted John Cook’s thoughts on the new skeptical iPhone App – Our Climate.
Has he found errors, lies, or critical omissions? Read it yourself. No, hardly, and “as if”. Instead he’s found “cherry-picking”, confusion (his), and strawmen.
Really, this is a great endorsement — after all, Cook runs the ambush site SkepticalScience.com. If Cook can’t find an error, or name the peer reviewed paper with evidence for catastrophic positive feedback, who can?
SkepticalScience.com is a parody of skepticism. It is “skeptical of the skeptics”, which is all very well, but it accepts everything offered up by Authorities as if it is the Word of God. “NOAA can do no wrong” (and was that NOAA or Noah?)
All of the points held up by Cook are weak “whatever” issues: things that are hardly a flaw. He’s noticed that the disorganized mass of real skeptics sometimes disagree with each other, golly gee, which proves we think for ourselves and don’t answer to a higher bureaucracy. John Cook — who so wants to be seen as skeptical – instead is anything but, and conforms strictly to [...]
It’s taken 21 months, four professors, and three associate/assistant professors, and THIS is the best they could come up with? The printed version listed no author (the pdf has been updated with John Cooks name*) yet wears the logo of the University of Western Australia (UWA), which will embarrass that university as word spreads of the intellectual weakness of their “Guide“.
Did UWA commission this piece of rather inept, qualitative “feel-good” science and clumsy reasoning? Stephan Lewandowsky invited John Cook to speak at UWA and “offer assistance“.
The booklet uses a mislabeled graph with a deceptive scale, won’t show the damning graphs it supposedly debunks, assumes positive feedback occurs despite the weight of empirical evidence against it (Douglass, Spencer, Lindzen), and repeats irrelevant information even though The Skeptics Handbook describes why rising sea levels and glaciers and ice sheets can’t possibly tell us what causes the warming. It misleadingly discusses a different fingerprint — one that isn’t the key point and isn’t disputed by skeptics. Cause and effect are mixed up, and naturally there are strawmen arguments to unnecessarily destroy for the spectacle of being seen to do something. To top it off, Cook still thinks a measurement is [...]
John Cook might be skeptical about skeptics, but when it comes to government funded committee reports, not so much.
The author of “skeptical science” has finally decided to try to point out things he thinks are flaws in The Skeptics Handbook. Instead, he misquotes me, shies away from actually displaying the damning graphs I use, gets a bit confused about the difference between a law and a measurement, unwittingly disagrees with his own heroes, and misunderstands the climate models he bases his faith on. Not so “skeptical” eh John? He’s put together a page of half-truths and sloppy errors and only took 21 months to do it. Watch how I use direct quotes from him, the same references, and the same graphs, and trump each point he tries to make. His unskeptical faith in a theory means he accepts some bizarre caveats while trying to whitewash the empirical findings.
In the end, John Cook trusts the scientists who collect grants funded by the fear-of-a-crisis and who want more of his money, but he’s skeptical of unfunded scientists who ask him to look at the evidence and tell him to keep his own cash.
These two graphs are not the same [...]
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