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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The Skeptics Handbook

Think it has been debunked? See here.

The Skeptics Handbook II

Climate Money Paper


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Last 30 years shows climate feedbacks are zero (at best)

Let’s be as generous as we can. The IPCC say feedbacks amplify CO2′s warming by a factor of about three.

Without the amplification from positive feedback there is no crisis

So being nice people, let’s assume it’s warmed since 1979 and assume that it was all due to carbon dioxide. If so, that means feedbacks are …. zero. There goes that prediction of 3.3ºC. Feedbacks are the name of the game. If carbon dioxide doesn’t trigger off powerful positive feedbacks, there was and is no crisis. Even James Hansen would agree — inasmuch as he himself said that CO2 would directly cause about 1.2ºC of warming if it doubled, without any feedbacks (Hansen 1984).

Consider the warming from1979 to 2007, when we measured temperatures using satellites and not corrupted and adjusted land thermometers. Douglass and Christy (2008) point out that, given how much CO2 levels increased in that time, the warming only amounts to what the IPCC scientists predict we should get from CO2 alone, from the direct effect of CO2, and not from the effect of CO2 plus positive feedbacks.

The warming trend expected from CO2 without any feedbacks at all is 0.07 ºC/decade. The trends [...]

The Travesty of the Missing Heat — deep ocean or outer space?

(See the Hammer link below, for more information on this graphic).

If there is one topic that trumps all others in climate science, it’s ocean heat.

If there is a planetary imbalance in energy, and Earth is acquiring more heat than it’s losing, we ought to be able to find that heat. Energy can not be created nor destroyed. It has to be somewhere.

On this Water-Planet, virtually every scientist agrees that the vast bulk of the extra energy ought be stored in the water. The oceans cover 70% of the surface, and are 4km deep; water has a high heat capacity (meaning it can store a lot of energy), and, because water flows quickly (unlike rock), turbulence and mixing can take that heat energy away from the surface.

Every skeptic (and taxpayer) ought to know that since 2003 (when we started measuring oceans properly) the oceans have been cooling:  Douglass and Knox 2010.

Five years of planetary heating amounts to a massive amount of energy. That’s 2,000 days of the sun bearing down on an atmosphere with growing levels of CO2. According to the IPCC favored models, the extra heat stored should be 0.7 x [...]

Dr David Evans: Four fatal pieces of evidence

Dr David Evans lays out four crucial pieces of evidence, and calls for a debate with Prof Andrew Pitman. But the evidence is so unarguably strong for skeptics, we know that the name-calling-team-who-want-our-money will do anything to avoid a public debate. If the evidence is “overwhelming” why are they so unwilling to explain it?  — Jo

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Submission to the Inquiry into Carbon Tax Pricing Mechanisms

Dr David Evans

20 September 2011

Dr David Evans consulted full-time for the Australian Greenhouse Office from 1999 to 2005, and part-time to the Department of Climate Change from 2008 to 2010, modeling Australia’s carbon in plants, debris, mulch, soils, and forestry and agricultural products. Evans is a mathematician and engineer, with six university degrees including a PhD from Stanford University.

Global warming has become a scam. Let me explain how it works.

It has superficial plausibility. Yes, global warming is occurring. Yes, carbon dioxide is a greenhouse gas and levels are rising. And yes, every molecule of carbon dioxide we emit causes some global warming.

Many non-scientists think that proves the case, but it doesn’t. In particular, it doesn’t rule out the possibility that carbon dioxide is merely [...]