CO2 does not cause Global Warming

10/02/2019 15:43 - Posted by Tom van Leeuwen
A clarification to begin with. The title of this article and the text of the image must be understood as: "Adding more CO2 to the currently existing CO2 concentration in the Earth's atmosphere has no measurable impact on the average temperature".

There has never been conclusive scientific evidence for the CO2-hypothesis which says that human emissions enhance the greenhouse effect, resulting in global warming. On the contrary, all evidence and rational considerations point in the opposite direction, namely that this hypothesis must be refuted.

Here's an overview:

  • Consideration 1: There is no permanent correlation between the CO2 concentration and the average Earth temperature
    Since the Holocene Climate Optimum, over the last 8 thousand years, the CO2 concentration has gradually increased, while the average Earth temperature has gradually decreased.
    Between the 40s and 70s of the last century, the CO2 concentration increased enormously, while the average temperature dropped. This decline was so strong that there was a "Global Cooling" crisis and scientists warned us about a new glacial period.
    Between 2000 and 2015, worldwide CO2 concentrations have risen considerably while no increase in temperature has been observed.
    All this would be utterly impossible if the CO2 hypothesis were true. There is no explanation from climatologists for these phenomena.
    Article: Temperature versus CO2 – the big picture

  • Consideration 2: The end of the warm-up at the start of each interglacial
    During the current Ice Age (4 million years), the Earth has known more than 40 glacial and interglacial periods. With each transition from glacial to interglacial, the heating stopped at approximately the same level. Why did that happen? According to the CO2 hypothesis, the earth temperature should have ended up in an unstoppable ("runaway") warming. This fact - which has repeated itself more than 40 times- is in complete contradiction with the hypothesis and the climatologists have no explanation for this.
    Article: Why did the warming stop?

  • Consideration 3: The ice ages of the distant pre-history
    Much earlier in the past there have been different ice ages on Earth while the CO2 concentration was about ten times as high as today. This is completely in contradiction with the CO2 hypothesis and climate scientists cannot explain this.
    Article: The Ordovician Ice Age

  • Consideration 4: Climate models predict too much warming
    The CO2 hypothesis has never been proven, but nevertheless it forms the basis for the hundreds of climate models used by the IPCC (UN) for their reports. As time goes by, it becomes increasingly clear that all these climate models predict too much warming. The results in no way correspond to the real-world measurements.
    The only model that somewhat approximates reality is the model that assigns the smallest role to greenhouse gases.
    This is a very clear indication that the hypothesis is incorrect and the climate scientists have no explanation for this.
    Article: Climate models

  • Proof: The fingerprint of the assumed enhanced greenhouse effect is missing
    In order for the greenhouse gases to be able to heat the Earth, energy is needed. According to the hypothesis, this energy should be obtained from a change in the infrared radiation balance of the atmosphere.
    In the NASA measurements this change is not found which proves that there is no enhanced greenhouse effect and therefore the hypothesis is refuted.
    Article: The fingerprints of the greenhouse effect

There is no reason to worry about the climate. There is no climate crisis and there is no reason to take measures to limit our CO2 emissions. Mankind has no influence on the climate and certainly not to the extent that they want us to believe.

Tom van Leeuwen, September 20, 2019.


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The fingerprints of the greenhouse effect

The hypothesis of "man-made climate change" tells us that the increase in the concentration of CO2 enhances the greenhouse effect of the atmosphere and has global warming as a final result.

Since the beginning of the industrialized era around 1850, man emits relatively large amounts of CO2 into the atmosphere through the use of fossil fuels. The consequence of these emissions is that during that period, the concentration of CO2 in the atmosphere increased sharply from about 300 parts per million to more than 400 ppm, an increase of almost 40%. The average temperature increased in the same period more or less 1.5 °C with a small variation depending on the data source used.

Why did the warming stop?

The political reports of the IPCC are based on the hypothesis that CO2 is the most important control knob of the Earth's temperature. The problem is that this hypothesis does not correspond at all with the empirical data available to science. Forecasts are made using models that are not capable of 'predicting' the past.

Temperature versus CO2 – the big picture

When discussing “Climate Change” it’s good to have an understanding of how the Earth’s climate has changed in the past. That will give us a reference to decide whether the current changes are normal or not.

Global temperatures have varied a lot over the last 500 million years. Depending on the timescale used, the current temperature is either cold or hot, so when you want to know the “normal temperature” you’ll have to indicate what timescale you’re using.

Video - Who are the real climate deniers?

The climate has shown many fluctuations during the Holocene. The difference between the highest and lowest average temperature of the past 10 thousand years is about 3 °C.

Climate alarmists, led by the IPCC, are trying to deny this, and understandably so. This variation means that without human influence there was climate change as well.

This undermines their hypotheses and often their jobs depend on it.

Climate change seen from a historical perspective.

Satellite Earth temperature February 2022

The satellite temperature departure measurement for February 2022 is exactly 0° C.

This means that Earth temperature during February 2022 was exactly the same as the average from 1991 to 2020.

Satellites are the best way to have insight into the short-term temperature variations. They measure the whole surface, independent of weather station distribution, Heat Islands, measurement failures, surface condition (land or water).

There is a step-wise increase in temperature, triggered by two very strong El Niño events (1998 and 2016.) The energy that welled up from the deep oceans established a new level in these two ocasions, where the warming paused. This is a natural phenomenon and has nothing to do with CO2, or human activity.

Where is the Climate Emergency? It just does not exist.

Wake up and spread this information to your government!

Tom van Leeuwen, March 1st, 2022.

The H2O greenhouse effect

The IPCC's CO2 hypothesis, with which Western governments try to incite their citizens to group-think, panic and unnecessary measures and taxes, rests in large part on the belief that there is a positive feedback effect between the greenhouse effects of CO2 and water vapor (H2O). A small increase in temperature, caused by the increase in CO2 concentration, would lead to an increase in water vapor concentration and thus increase the H2O greenhouse effect.

This is a misconception. First, positive feedback effects are extremely rare in nature. Furthermore, there is no sensible word to say about the effect that an increase in the H2O greenhouse effect has on the temperature.

Below are three reasons why it is impossible to model this effect.

Rob Jetten, Minister of Climate and Energy

Rob Jetten is the new, brand new Minister of Climate and Energy in the Dutch cabinet Rutte IV.

This is a new ministry, but unfortunately it is characterized by the same ideas as in previous cabinets. The idea that humans, by burning fossil fuels, are responsible for the recent warming of the Earth.


This article is partly based on the thorough research done by Freek van Leeuwen on the scientists Valentina Zharkova and Willie Soon and their work on sunspots.

As we have seen in recent weeks, new research indicates that there is no increased CO2 emissions. global warming, and that only 12% of the increase in atmospheric CO2 concentration is due to human action.

Good news, then, but then the question arises where the heating comes from, which many people feel and which can also be seen in the monthly charts of the satellite measurements.