Below Rainer Hoffmann presents Part 3 of his “10 Inconvenient Truths About Professor Hans-Joachim Schellnhuber“. I wrote about Part 1 here, and Part 2 focused on Schellnhuber’s claiming that climate models provide projections, forecasts, scenarios, prognoses, depending on the situation being served at hand.
Part 3 below shows a whopper: Schellnhuber claiming that the complex, chaotic climate system can all be reduced down to a “simple linear relationship” with CO2 emissions.
The video starts by explaining how climate is a highly complex, chaotic non-linear system that cannot be defined by any single variable. At the 2:14 mark IPCC scientist Mojib Latif explains that calculating the future outcome of a system as complex as the climate is an impossible task. This is confirmed by Prof Andreas Bott at the 6:33 mark, “The systems of equations are non-linear, and thus not predictable.” The first 14 minutes of the film explain this in detail.
Even the 2001 IPCC reports tells us:
In climate research and modeling, we should recognize that we are dealing with a coupled non-linear chaotic system, and therefore that the long-term prediction of future climate states is not possible.”
But not everyone agrees with this.
For one, in 2009 Prof. Hans Joachim Schellnhuber of the Potsdam Institute for Climate Impact Research told us that climate is actually a simple system where global temperature behaves linearly with CO2 concentration. At the 15:00 mark Schellnhuber said on Phoenix public television on November 23, 2009:
We have been able to show at our institute, also our friends at Oxford, and at the University of Victoria in Vancouver Island, that there is an extremely simple, quasi linear relationship between the global mean temperature, that is the increase and the total amount of CO2 that will be blown into the atmosphere over the next four or five decades. The entire complexity of our climate system can be reduced to this simple linear relationship. Nature has done this favor as an exception.”
What a con-job. Schellnhuber then goes on to claim that scientists know exactly how much CO2 is allowed to be blown into the atmosphere before the climate systems tips: “750 billion tonnes of CO2 over the next 4 decades“.
So when it appeared the planet was warming, Schellnhuber told us that climate was a simple linear equation involving 2 variables. So what does Schellnhuber say today now that the data show there hasn’t been any warming in 15 years despite rising CO2?
Look at what Schellnhuber says on April 17, 2013. At the 17:34 mark Schellnhuber is shown blaming non-linearity for the absence of warming over 15 years.
So quickly can a con-artist turn on a dime.