New CO2 Climate Study Affirms Key Data in ‘Slaying the Sky Dragon’ Book
A new climate study reveals important parallels with science presented in the highly-rated book, Slaying the Sky Dragon: Death of the Greenhouse Gas Theory. (2010).
As reported on climatechangedispatch.com Kenneth Richard writes:
“A comprehensive correlation analysis (conducted by Grabyan, 2025) utilizing temperature and CO2 data spanning the past 2,000 years reaffirms that CO2 changes lag temperature changes by approximately 150 years throughout the period from 1 to 1850 CE (Common Era).
This CE lead-lag sequencing – with temperature changes leading and CO2 changes lagging by centuries to millennia – is wholly consistent with the paleo CO2 and temperature proxy record (ice core, stomata, borehole, etc.) spanning the last 20,000 years (Demezhko and Gornostaeva, 2014), 400,000 years (Fischer et al., 1999, Mudelsee et al., 2001, Monnin et al., 2001, Uemura et al., 2018), 66 million years (Frank, 2024), and 420 million years (Koutsoyiannis, 2024).
Notably, changes in CO2 levels can be attributed to temperature changes, not just over the long term (centuries), but also over shorter periods (months, years). (Koutsoyiannis et al., 2023; Humlum et al., 2013)”
These important facts echo the analysis presented in the ground-breaking ‘Slayers’ book of 2010 that eviscerated the greenhouse gas theory, discredited but popularised by politicized government climate ‘science.’
Geologists are among the most adept body of researchers who readily accept that paleoclimate CO₂ lags temperature in the ice-core records). Grabyan’s paper documents and emphasizes CO₂–temperature lag over the last two millennia; Slaying the Sky Dragon asserts such empirical observation among several arguments against the standard greenhouse-gas explanation.
The paper “Global Atmospheric CO₂ Lags Temperature by 150 yr between 1 and 1850 AD” presents visual and statistical analyses of proxy reconstructions for temperature and for atmospheric CO₂ over the last ~2000 years, and reports that changes in reconstructed CO₂ tend to follow temperature changes with a lag of order centuries for the interval studied. Science of climate change
The author also discusses structural breaks and tests solar irradiance (TSI) as a possible forcing in the same time window (supplementary appendices are provided). The paper is framed as evidence that CO₂ did not precede temperature in the pre-industrial multi-century record analyzed.
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Empirical observation of CO₂ lag in many paleorecords. Both the Grabyan study and the book highlight the well-documented paleoclimate result that, in many ice-core sequences and for many glacial–interglacial transitions, Antarctic temperature proxies appear to rise before atmospheric CO₂ by centuries. This is the central empirical point of agreement. Science of climate change
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That CO₂–temperature relationships are complex on multi-century to millennial timescales: both emphasize that simple one-to-one narratives (“CO₂ always leads temperature”) are not supported by all paleodata. Science of climate change
Slaying the Sky Dragon: Death of the Greenhouse Gas Theory ( a publication by Principia Scientific International authors) is a skeptical anthology (multiple contributors) that argues that the conventional greenhouse-gas explanation for modern warming is incorrect or overstated.
A key opening argument is that paleoclimate records show CO₂ rising after temperature, which the authors use to develop further analysis as to why CO₂ cannot be the driver of climate change. The book builds on this, and other known empirical facts, to show that carbon dioxide cannot be the control knob of earth’s climate and thus is ‘innocent’ of climate alarmist claims for man-made global warming.
About the author – John O’Sullivan is CEO and co-founder of Principia Scientific International (PSI). He is a seasoned science writer and legal analyst who assisted skeptic climatologist Dr Ball in defeating UN climate expert, Michael ‘hockey stick’ Mann in the multi-million-dollar ‘science trial of the century‘. From 2010 O’Sullivan led the original ‘Slayers’ group of scientists who complied the book ‘Slaying the Sky Dragon: Death of the Greenhouse Gas Theory’ debunking alarmist lies about carbon dioxide plus their follow-up climate book. His most recent publication, ‘Slaying the Virus and Vaccine Dragon’ broadens PSI’s critiques of mainstream medical group think and junk science.
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Jerry Krause
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Hi John O’ Sullivan,
in a recent comment (https://principia-scientific.com/the-ignored-geothermal-hotspot-off-the-kamchatka-peninsula/#comment-125482) Had written “somethings are easy to explain if one DOES consider the GOOD data of other GOOD Scientists.”
You just quoted Kenneth Richard. “A comprehensive correlation analysis (conducted by Grabyan, 2025) utilizing temperature and CO2 data spanning the past 2,000 years reaffirms that CO2 changes lag temperature changes by approximately 150 years throughout the period from 1 to 1850 CE (Common Era).”
Less than 500 years ago Galileo Galilei wrote book in the Italian language and for about 200 years circumstances were that no English translations of Galileo’s book were not available to physical scientists unable to read English until 1914 when Henry Crew and Alfonso de Salvia translated the book to English. I review this translation problem becausemy copy of my English translation of Newton’s Latin language The Principia does not list Galileo’s name in its INDEX. So while I cannot reference this Galileo quote “measure what is measurable and make measurable what is not so.”; I believe it is true. And I reason this encouraged Fharnheit to invent his qualitative thermometer whose scale was based upon the absolute zero (0) degree temperature of freezing water, an approximate 212 degree temperature of boiling water at I atmosphere external pressure and an estimated normal human body temperature of 100 degrees. It takes three points to define a straight line.
Hence, actual temperatures older than Fahrenheit’s invention of the thermometer can’t be and proxy data is not actual measurements.
Have a good day
Reply
Herb Rose
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You continuously use extensive quotes to lend creditability to your comments then use utterly stupid statements to create nonsense. A straight line is defined as the shortest distance between two points. Three points demark an area.
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Jerry Krause
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Hi Herb,
Any two points can lie on any line–curved or straight. However, three points, or more, can only lie on one straight line. That temperature is a linear function is a significant OBSERVED FACT. .
Have a good day
Reply
Herb Rose
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“Three points or more can only lie on one straight line.” Your complete ignorance extends to plane geometry.
“The temperature is a linear function is a significant OBSERVED FACT” This is more Jerry idiocy. The energy needed to raise the temperature of water changes with the initial temperature which is why a calorie is defined as 1/100 of the energy needed to raise the temperature of water from 0 C to 100 C. No pone can answer your question “How stupid am I” because you continually grow stupider.
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Jerry Krause
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Hi Herb,
My point is that I know I make mistakes and admit this. But you and so many other fools have never been wrong so you seem to be unable to understand my reasonings about OBSERVED FACTS.
Have a good day