This post presents the main points and exhibits from Professor de Lange’s presentation February 26, 2025.  Most images are self explanatory, with some excerpts in italics lightly edited from captions, and some added images as well. H/T Bud Bromley.

Prof. de Lange demonstrates that there is no credible climate crisis, and that there is much more to climate than CO2 alone. First, he addresses the discrepancy between satellite temperature measurements and results from climate models. Second, he shows the effect of even doubling the CO2 concentration has only minor effects, while it is in fact crucial to photosynthesis. Third, he shows that how the significant lack of experimental data on cloud composition now hampers progress in climate science. Fourth, he demonstrates that there is no convincing correlation between CO2 and temperature on a geological time scale. Fifth, he addresses global future energy supply, demonstrating that renewables are “unaffordables”, just as are untested technologies (batteries, hydrogen), and he concludes that the future has to be based on nuclear power.

1.  Natural Science and Observations versus Models

2.  Atmospheric Physics and Greenhouse Gases

Warm Surface of the earth can be viewed as a radiator in the infrared that radiates Intensity out Into the atmosphere, and again the flow of infrared energy is not interrupted. It is absorbed by the atmosphere and that’s where the clouds turn out to be extremely important. They delay the outgoing energy into the universe. In climate science we balance the yellow incoming solar energy in watts per square meter with the outgoing radiation from the surface and atmosphere. Some is reflected and some is absorbed and emitted as long wave radiation.  The imbalance is shown at the bottom as ~1 W/m2, which is a small difference between two much larger energy flows showing hundreds of W/m2. If for any reason, there is a slight change in either the incoming or outgoing flows, the imbalance would change dramatically.

The fact that Greenhouse gases play very important role in absorbing infrared radiation in the atmosphere is already 150 years old. We shall see that dependence of the temperature of the earth due to greenhouse gases is not linear, the effect on temperature is logarithmic. This is seen in the graph on the left side.

On the horizontal scale we see the frequency scale expressed in common unit in physics in wave numbers. And here we see the continuous Blue Trace results from infrared radiation that would leave the warm surface of the planet if there were no atmosphere at all. The total surface under the blue trace depends on temperature to the fourth power, very temperature dependent.

We see the effect of atmosphere greenhouse gases represented by the black line, which is a bit lower than the blue Trace. The green line shows the where the black line would be, were there to be no CO2 in the atmosphere. The red line shows that there would be little difference from doubling CO2 from 400 ppm to 800 ppm.

The role of water vapor is terribly important.  Water is the most important Greenhouse gas, but when we Go to clouds, he situation becomes much more complicated than in the absence of clouds. So clouds again are the Achilles heel of of climate Science.  As I said an increase in CO2  leads to a little more warming but the increase is logarithmic. meaning less and Less warming at higher CO2 levels.  Doubling CO2 leads to extra forcing of about 1 percent or about 3 watts per square meter.  Since 1850 when temperature measurements really started since, the planet’s surface has warmed up by about 1°C.   That is not very much, and the effect of CO2 can only be very much smaller.

3.  Scattering in Clouds

The post referenced in the exhibit is Clauser’s Case: GHG Science Wrong, Clouds the Climate Thermostat

4. Is CO2 the only and most important culprit of ‘’disastrous’’ climate change, warming in particular?

5. Supplying Energy to a Growing World Population