JoNova A science presenter, writer, speaker & former TV host; author of The Skeptic's Handbook (over 200,000 copies distributed & available in 15 languages).
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A new brief summary of the reasoning and evidence behind the skeptics case. –Jo
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The Skeptic’s Case Who Are You Going To Believe – The Government Climate Scientists Or The Data? Guest Post Dr David M.W. Evans
We check the main predictions of the climate models against the best and latest data. Fortunately the climate models got all their major predictions wrong. Why? Every serious skeptical scientist has been consistently saying essentially the same thing for over 20 years, yet most people have never heard the message — here it is, put simply enough for any lay reader willing to pay attention.
What the Government Climate Scientists Say
Figure 1: The climate models. If the CO2 level doubles (as it is on course to do by about 2070 to 2100), the climate models estimate the temperature increase due to that extra CO2 will be about 1.1°C × 3 = 3.3°C. [1]
The direct effect of CO2 is well-established physics, based on laboratory results, and known for over a century.[2]
Feedbacks are due to the ways the Earth reacts to the direct warming effect of the CO2. The threefold amplification by feedbacks is based on the [...]
Ladies and Gentlemen this is the front line trench of modern science. If climate science is so important, and there is no time to waste, why does the system try so hard to discourage dissent (because they don’t want to find the truth, only the “correct” answer)?
This paper by Lindzen and Choi was submitted and rejected by GRL in 2009, then rejected twice more by PNAS. (And in part because it needed to meet impossible standards. In the end, it was supposed to include “the kitchen sink” but fit into a sandwich bag — see below). The paper could have been out for discussion in 2009, and while it has improved upon revision, was it worth the two year wait? Those gains could have been made in two months (or two weeks) online.
Even the reviewers understand how significant these results would be if they are right. One admits the new paper shows the models don’t match the observations.
Science needs free and open criticism, and competing theories. If Lindzen’s analysis is revolutionary, but potential wrong, is it so bad to publish those results? He is one of the most eminent researchers in the [...]
Dr Noor van Andel
Dr Noor van Andel spoke at the Dutch Meteorological Institute (KNMI), provocatively concluding there is no observational evidence for the influence of CO2 on past or present climate. He has released a high caliber slide set. He is the former head of research at Akzo Nobel.
In the very long run, we need not mind about CO2 or global warming, but instead about higher [galactic cosmic ray] activity and global cooling. There is no way we can influence [galactic cosmic ray] activity, originating in active black holes and imploding supernovae.
Essentially he uses empirical evidence to draw the conclusion that most recent climate variability is due to Pacific Decadal Oscillation, and to Cosmic Ray effect as described by Svensmark. This fits with what William Kinninmonth explained and I described as essentially a massive pool of “stored cold” in the abyssal depths of the oceans, which erratically reaches up and pulls in heat from the insubstantial atmosphere above. Air temperatures are at the beck and call of the releases of this “cold” (yes I know cold is just an absence of heat). In El Nino years when the cold pool lies deep and unstirred, the incoming [...]
Al Gore describes how carbon dioxide beats up Mr Sunbeam and stops him leaving the atmosphere. But he “forgot” to mention that clouds reflect around a quarter of all the sunlight that hits the earth. Those beams of light travel all the way from the sun to get bounced off into space when they are just a few kilometers from the ground.
Any change in cloud cover makes a major difference. The IPCC assumes clouds respond to warming, but clouds could easily drive the warming.
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Carbon dioxide only causes 1.1°C of warming if it doubles. That’s according to the IPCC. Did you know?
The real game is water.
Researchers made guesses about humidity and clouds in the early 1980s and they built these guesses into their models. We now know they were wrong, not about carbon, but about water in the form of humidity and clouds. Here’s how the models can be right about carbon and wrong about the climate.
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UPDATED (see below)
Richard Lindzen is unarguably one of the top meteorologists in the world, with over 200 publications to his name, as well as awards, medals, prizes and is a member of the NAS, AAAS, AGU, AMS. He is The Alfred P. Sloan Professor of Atmospheric Sciences, Massachusetts Institute of Technology and his work includes major contributions to our understanding of the Hadley Circulation, small scale gravity waves on the mesosphere, as well as atmospheric tides and oscillations in the tropical stratosphere. From the beginning, he has questioned the claims that there is a crisis due to carbon dioxide emissions, pointing out that even with the poor resolution of ice cores back in the 1980′s it was still evident that there was a lag—as temperatures declined, carbon stayed high for thousands of years, something which didn’t sit well with the idea that carbon had a strong and constant force on the climate.
What follows are his thoughts on the current state of the science. They must make it awkward for those who can’t help themselves but believe in authority. Here’s a man who knows more than most of us could ever hope [...]
The gap between real world data and thermometers is a make-or-break issue for the AGW theory. The models predict a hot-spot in the atmosphere above the tropics, but the weather balloons (called radiosondes) can’t find any sign of it. Most claims that the hot-spot has been found are not providing any new data, they are just massaging the same old numbers with a different statistical tool. Here are three variations (though the third is not a statistical-spin, it’s just nonsense).
1-Some AGW supporters claim that Santer et al has found the hot-spot. But his paper boils downs to a statistical reanalysis that suggests that due to noise and error, the hot-spot might be there. Santer hasn’t actually found the missing hot spot. He has a case, but it’s not a strong one. The statistical counterargument is at Climate Audit.
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