The climate during the Holocene



11/09/2018 21:00 - Posted by Tom van Leeuwen
Over the last 8,000 years, the atmospheric CO2 concentration has risen steadily, while the average global temperature has declined. This fact contradicts the claim that CO2 is the main "global warming" control knob.
More on the relation between CO2 and temperature: Temperature versus CO2 – the big picture.

CO2 is a greenhouse gas, but it's warming capability is almost saturated. Even at much lower concentrations, it absorbs almost all energy that is emitted in its absorption wavelength bands, so adding more CO2 to the atmosphere has no measurable effect on global temperatures.
More in the role of CO2 as a greenhouse gas: Why did the warming stop?

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.
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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.
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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.
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Sunspots

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.
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"Ocean Acidification"

Beside Global Warming, the second scare governments all around the world are trying to make us believe is that man-made CO2 emissions are causing ocean acidification, that will have a severe impact on all ocean life. A related issue is coral bleaching, a process that is supposed to threaten unique ecosystems like the Great Barrier Reef.
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Video: Interview with William Happer

Recently William Happer gave an interview with Marcel Crok, co-founder of the CLINTEL Foundation in the Netherlands.

Unfortunately, the image that Happer wants to show in the video is barely visible. Hence, here is a clear representation.
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Climate truths and climate lies

In recent years, a very worrying situation has arisen regarding the climate issue. Western politicians seem to have lost touch with reality and are trying to outdo each other in political correctness, which is in no way supported by science. Scientists are silent for fear of losing their reputation and job.
The time seems to have come to put things straight.
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We are innocent! CO2 measures make no sense

We saw in an earlier article, "The fingerprints of the greenhouse effect", that IR measurements in the upper atmosphere indicate that the enhanced greenhouse effect is not occurring.

New research now proves that the human contribution to the increase in CO2 concentration cannot be more than 12%. The remaining 88% has natural causes.
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An estimation of the human influence on the climate

The month of May has come to an end. Another month of economic paralysis and reduced human CO2 emissions. And again, the CO2 concentration in the atmosphere continues to rise to record levels in modern measurements.

It is time to remove the blindfolds and thoroughly analyze the question of the effect of human CO2 emissions on global temperature. I propose to divide the problem into four issues, open for discussion:
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Sydney Sea-Level Rise

According to the IPCC CO2-hypothesis, rising CO2-levels leads to warming. That warming supposedly expands sea-water and melts glaciers and polar ice-caps, finally resulting in rising sea-levels. They warn us for catastrophic sea-level rises in the year 2100 and beyond because of this process.


Sydney is strategically located between the Indian, Pacific, and Southern oceans. CO2-levels went up from 300 to 400 parts per million over the past 100 years. What's the impact on Sydney's sea-level?
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Democracy? Make your choice!

In recent centuries the power of governments has become stronger and stronger. The governments got involved increasingly deeper into our lives and the citizens, the individuals, have ever less to say about ever more issues.

Climate policy is an excellent example of this interference. The government relies on completely unreliable data, unproven hypotheses, and ideas while the consequences of this interference affect everyone. At present, governments worldwide are about to make cheap and reliable energy sources -that form the basis of our economic prosperity- inaccessible. The results are far-reaching.
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Censored and kicked by a Facebook group!

Yesterday I decided to post my Four Interglacials to a Facebook group called "Global Warming Denialism is a Big Oil agenda".

It was an educational experience.
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About consensus, "97%", and settled science

There are four misconceptions about science that are commonly used by catastrophic man-made warming advocates. Normally, when you try to start a conversation on the subject, their first reply will be one of these four "arguments".
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Atmospheric CO2 distribution

On the above world map we see the average level of carbon dioxide (CO2) in the atmosphere over five weeks in 2014. Credit: NASA / JPL-Caltech.
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A simple CO2 model

In this video Professor of Astronomy Michael Merrifield (University of Nottingham) presents a simple model of the CO2 greenhouse effect.

He leaves out clouds, albedo effect, ocean interaction, sun cycles and a lot of other factors that affect the climate and discusses only the CO2 radiation in the atmosphere.

Then, he explains his hypothesis for a surface temperature of 15 °C. And yes, that might be the Earth's approximate average temperature, but in the real world, temperatures vary from -40 °C to 35 °C at any given moment. He does not explain how this hypothesis works under these circunstances.

His main argument is that when the CO2-concentration rises, the atmosphere will start emitting from a higher layer. The temperature at that emitting layer has to be -18 °C. So, if the -18 °C temperature layer is higher up in the atmosphere and as the temperature rises 6.5 °C for each kilometer we go down from that layer, the surface temperature will go up.
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CO2 Band-Saturation Explained

Professor at the Geophysical Sciences department at the University of Chicago David Archer describes the band-saturation of the CO2 greenhouse effect.

After that, everything goes wrong.

The first part of the lecture is very informative. Professor Archer explains in great detail how the CO2 greenhouse absorption works, it's logarithmic nature and the band-saturation. He even shows on a working instance of the MODTRAN model how adding the first ppm of CO2 to the atmosphere has a huge impact on the atmosphere's energy balance. Adding more CO2, the effect fades away.
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Hydroelectricity and greenhouse gasses

Hydropower is one of the cleanest energy sources available. The only downsides known so far are the impact on the landscape and the risk of a dam breaking due to earthquakes. Carefully choosing the locations and high construction standards are needed to solve these problems.

Besides electricity generation, dams also help to regulate the water flow in the rivers, making them better navigatable and useful for irrigation.

So, overall it seems to be quite positive, but recent research has "discovered" a new downside to hydroelectricity and it's a usual suspect: Greenhouse gasses.
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The world needs more CO2

Interview with Professor William Happer of Princeton University. Mr. Happer is a renowned physicist, specialized in the field of atomic physics, adaptive optics and spectrometry. This interview from 2015 is part of the series "Conversations that Matter."

Some quotes from this interview:
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The logarithmic nature of the CO2 greenhouse effect

For many people, a logarithmic relationship can be a fairly abstract concept. It is hard to imagine the implication that it has on the strength of the greenhouse effect that corresponds to the amount of CO2 that humanity emits into the atmosphere. Here we present a visualization to explain in a simple way what we are talking about.

CO2 is a greenhouse gas. The presence of CO2 in the atmosphere traps a part of the infrared radiation that the Earth's surface emits into space. The total greenhouse effect of the Earth's atmosphere is about 30 °C, without this effect, the temperature would be -15 °C instead of +15 °C, the actual current average temperature.
Water vapor is the most important greenhouse gas. CO2 provides 3 °C of heating, that is, 10% of the total effect.

When the concentration of CO2 increases, its greenhouse effect also increases, but not in a linear fashion, but logarithmically. For each increase in concentration, the effect on temperature is less and less.
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Water vapor

Water vapor is the single most important greenhouse gas. It makes up 80% to 90% of the total greenhouse effect of the Earth's atmosphere.

Climate models depend on water vapor as a positive feedback for supposed CO2 warming. In these models, CO2 causes a tiny warming that causes the relative atmospheric humidity to increase. That increase in water vapor produces the catastrophic warming they predict.
The problem is that in the real world, while atmospheric CO2-concentrations increased by almost 30% since the end of World War II, the relative atmospheric humidity has been stable at low altitudes and has even decreased at higher altitudes.
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Four Interglacials

This picture is part of a very interesting paper by independent researcher Brian Catt about the effects of magma and volcanism on the ocean heating through glaciation cycles.
The graph of 4 Interglacial Data Sets was created by James Covington.

It shows the temperature for the last four interglacial periods. Each interglacial has it's own color:

  • Red - The Holocene, from 18,000 years ago until today ("We are here...")
  • Green - The Eemian , from 136,000 years ago until 110,000 years ago
  • Blue - Interglacial "MIS 7", from 245,000 years ago until 219,000 years ago
  • Purple - Interglacial "MIS 9", from 343,000 years ago until 317,000 years ago
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The Global Cooling Scare

During the 1970's, there was a "scientific consensus" on catastrophic Global Cooling. This clearly shows that mankind, heavily influenced by the mainstream media, overreacts to normal, natural climate variations.
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The Eemian Interglacial

The Eemian Interglacial was a warm period that lasted from ca. 130,000 – 115,000 years ago and was followed by the most recent glacial period (Weichselian/Wisconsinan), which lasted until about 11,000 years ago when the current warm period, the Holocene, began. So, it's the last interglacial before the current one.

The interglacial is named after the River Eem in the Netherlands because it was first recognized from boreholes in the area of the city of Amersfoort, located in the Eem Vally. Studying the Eemian is very important because the continental configuration of the Earth was very similar to the current situation. This means that ocean currents were very likely to be the same as today.
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Niels Bohr Institute: "CO2 follows temperature"

New research from the Niels Bohr Institute at the University of Copenhagen indicates that atmospheric CO2 concentrations follow temperature, and not the other way around.

“Our analyses of ice cores from the ice sheet in Antarctica shows that the concentration of CO2 in the atmosphere follows the rise in Antarctic temperatures very closely and is staggered by a few hundred years at most,” explains Sune Olander Rasmussen, Associate Professor and centre coordinator at the Centre for Ice and Climate at the Niels Bohr Institute at the University of Copenhagen.

Warmer water can contain less CO2, so when oceans warm up they release CO2 to the atmosphere.

This is in clear contradiction with the CO2-hypothesis that says that CO2 causes warming.
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