Nearly 140 Scientific Papers Detail The Minuscule Effect CO2 Has On Earth’s Temperature

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We have updated our “Extremely Low CO2 Climate Sensitivity” scientific paper list with new papers added from 2021 and some newly discovered papers from the past.

As of 2016 this list had only 50 papers on it (as indicated by the web address). In less than 6 years the list has grown to 137 (as of today).

Click on the link for the full list.

135+ Papers Find Extremely Low CO2 Climate Sensitivity

A few of the sample papers are shown here.

Coe et al., 2021 (2XCO2 [400 to 800 ppm] = 0.5°C)

The HITRAN database of gaseous absorption spectra enables the absorption of earth radiation at its current temperature of 288K to be accurately determined for each individual atmospheric constituent and also for the combined absorption of the atmosphere as a whole. From this data it is concluded that H2O is responsible for 29.4K of the 33K warming, with CO2 contributing 3.3K and CH4 and N2O combined just 0.3K. Climate sensitivity to future increases in CO2 concentration is calculated to be 0.50K, including the positive feedback effects of H2O, while climate sensitivities to CH4 and N2O are almost undetectable at 0.06K and 0.08K respectively. This result strongly suggests that increasing levels of CO2 will not lead to significant changes in earth temperature and that increases in CH4 and N2O will have very little discernable impact.


Schildknecht, 2020 (2XCO2 = 0.5°C)

Based on new radiative transfer numerical evaluations, we reconsider an argument presented by Schack in 1972 that says that saturation of the absorption of infrared radiation by carbon dioxide in the atmosphere sets in as soon as the relative concentration of carbon dioxide exceeds a lower limit of approximately 300 ppm. We provide a concise brief and explicit representation of the greenhouse effect of the earth’s atmosphere. We find an equilibrium climate sensitivity (temperature increase ∆T due to doubling of atmospheric CO2 concentration) of ∆T ≃ 0.5°C. We elaborate on the consistency of these results on ∆T with results observationally obtained by satellite-based measurements of short-time radiation-flux versus surface-temperature changes. … The absorption reaches values close to 100% for a realistic CO2 content of 0.03%, it is concluded that any further increase of (anthropogenic) CO2 cannot lead to an appreciably stronger absorption of radiation, and consequently cannot affect the earth’s climate. … [T]he effect of an anthropogenic CO2 increase on the climate on earth is fairly negligible.


Easterbrook, 2016 

CO2 makes up only a tiny portion of the atmosphere (0.040%) and constitutes only 3.6% of the greenhouse effect. The atmospheric content of CO2 has increased only 0.008% since emissions began to soar after 1945.  Such a tiny increment of increase in CO2 cannot cause the 10°F increase in temperature predicted by CO2 advocates. Computer climate modelers build into their models a high water vapor component, which they claim is due to increased atmospheric water vapor caused by very small warming from CO2, and since water vapor makes up 90–95% of the greenhouse effect, they claim the result will be warming. The problem is that atmospheric water vapor has actually declined since 1948, not increased as demanded by climate models. If CO2 causes global warming, then CO2 should always precede warming when the Earth’s climate warms up after an ice age. However, in all cases, CO2 lags warming by 800 years. Shorter time spans show the same thing—warming always precedes an increase in CO2 and therefore it cannot be the cause of the warming.


Davis, 2017

The correlation between ΔRFCO2 and linearly-detrended T across the Phanerozoic Eon is positive and discernible, but only 2.6% of variance in T is attributable to variance in ΔRFCO2. Of 68 correlation coefficients (half non-parametric) between ΔRFCO2 and T proxies encompassing all known major Phanerozoic climate transitions, 75.0% are non-discernible and 41.2% of discernible correlations are negative. Spectral analysis, auto- and cross-correlation show that proxies for T, atmospheric CO2 concentration and ΔRFCO2 oscillate across the Phanerozoic, and cycles of CO2 and ΔRFCO2 are antiphasic. A prominent 15 million-year CO2 cycle coincides closely with identified mass extinctions of the past, suggesting a pressing need for research on the relationship between CO2, biodiversity extinction, and related carbon policies. This study demonstrates that changes in atmospheric CO2 concentration did not cause temperature change in the ancient climate.

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22 responses to “Nearly 140 Scientific Papers Detail The Minuscule Effect CO2 Has On Earth’s Temperature”

  1. Nearly 140 Scientific Papers Detail the Minuscule Effect CO2 Has on Earth’s Temperature – Climate- Science.press

    […] Nearly 140 Scientific Papers Detail The Minuscule Effect CO2 Has On Earth’s Temperature […]

  2. Nearly 140 Scientific Papers Detail The Minuscule Effect CO2 Has On Earth’s Temperature | Climate Depot

    […] Read the Full Article […]

  3. tom0mason

    Thank-you for the update Kenneth,
    I’ve used some of this catalog of scientific evidence to counter arguments that stem from the belief in the accuracy of ‘climate models’.

  4. tom0mason

    Thank-you for the update Kenneth.
    I’ve used some of this catalog of scientific evidence to counter arguments that stem from the belief in the accuracy of ‘climate models’.

  5. Nearly 140 Scientific Papers Detail The Minuscule Effect CO2 Has On Earth’s Temperature – Watts Up With That?

    […] From the NoTricksZone […]

  6. Nick Schroeder

    The Earth is cooler with the atmosphere not warmer. Stand in front of a blazing campfire. Hold up a large mylar space blanket. Are you warmer now or colder? That’s what the atmosphere does and a greenhouse it’s not.
    Per the K-T atmospheric energy balance graphic as well as numerous clones the GHGs do their thang with “extra” energy upwelling from a surface radiating LWIR as a black body. These graphical representations contain egregious math and physics error. See https://youtu.be/0Jijw7-YG-U
    As demonstrated by experiment the terrestrial surface cannot independently upwell LWIR as a black body.
    For the experimental write up see:
    https://principia-scientific.org/debunking-the-greenhouse-gas-theory-with-a-boiling-water-pot/
    This experiment is replicated when an engineer performance tests his finned/fanned heat exchanger design, when cold water is poured over a hot car radiator, when a British baker cools a loaf by waving a cookie sheet.
    There is no greenhouse effect.
    The so-called GHGs do not actually do anything.
    Mankind’s CO2 does not drive global warming or climate change.

    Version 1.0 011422

  7. James H. Shanley

    The AGW people will not comment on the existence of the 135 plus papers because it is an attack on their religion.

  8. Nearly 140 Scientific Papers Detail The Minuscule Effect CO2 Has On Earth’s Temperature - Western Highlights

    […] From the NoTricksZone […]

  9. Nearly 140 Scientific Papers Detail The Minuscule Effect CO2 Has On Earth’s Temperature |

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  10. William Haas

    If adding CO2 to the atmosphere caused warming than the increase in CO2 over the past 30 years should have caused at least a measurable increase in the dry lapse rate in the troposphere but that has not happened. There is evidence in the paleoclimate record that CO2 has any effect on climate. More CO2 in the atmosphere is a result of global warming and not a cause. The IPCC has been unable to measure the climate sensitivity of CO2 as if it were zero. What would enable any CO2 based warming would be a radiant greenhouse effect but such a radiant greenhouse effect has not been observed on Earth or on any planet in the solar system with a thick atmosphere. Then there is the issue of H2O feedback. What the AGW conjecture ignores is that besides being the primary greenhouse gas, H2O is also a major coolant in the Earth’s atmosphere moving heat energy from the Earth’s surface most of which involves some form of H2O to where clouds form via the heat of vaporization. The overall cooling aspects is evidenced by the fact that the wet lapse rate is significantly less than the dry lapse rate Hence H2O must act as a negative feedback, reducing any warming the CO2 might cause Negative feedback systems are inherently stable as has been the Earth’s climate for at least the past 500 million years. It has been stable enough for life to evolve as evidenced by the fact that we are here.. My best estimate for the climate sensitivity of CO2 is that it is zero. Good absorbers are also good radiators so for each photon that CO2 absorbs it radiates away a photon of equal energy for a net energy gain of zero. If any gasses in the Earth’s atmosphere are heat energy trapping it would be the non-greenhouse gasses because they are such poor LWIR radiators to space. THe AGW hypothesis is based on only partial science and is all wrong..

  11. Nearly 140 Scientific Papers Detail The Minuscule Effect CO2 Has On Earth’s Temperature – Watts Up With That? - Lead Right News

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  12. Nearly 140 Scientific Papers Detail The Minuscule Effect CO2 Has On Earth’s Temperature – Watts Up With That? – ChicHue.com

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  13. Nearly 140 scientific papers detail the Effect of CO2 on Earth's Temperature - Rise Thanks to That? - News7g

    […] From NoTricksZone […]

  14. Nearly 140 scientific papers detail the Effect of CO2 on Earth's Temperature - Rise Thanks to That? - News7D

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  15. Nearly 140 Scientific Papers Detail The Minuscule Effect CO2 Has On Earth’s Temperature | ajmarciniak

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  16. Russell Seitz

    Sturgeon’s Law
    ” 90 % of published papers are crap.”

    Minsky’s corollary to Strugeon’s Law
    “So are 95% of the remainer”

    Since 10% of almost 140 is less than 14.
    And 1/ 20th of less than 14 is less than one,

    Kenneth Richards own argument reders him honor bound to entitle his retraction:

    No Papers Worth Reading Find Extremely Low CO2 Climate Sensitivity

  17. E. Schaffer

    Must have been hard work to write this article. A know a few of these papers, which regrettably all get it wrong in some way or another. Usually they deal with “back radiation”, or “absorption”, rather than emissions TOA. Also some try to downplay the role of CO2 altogether in favor of water vapor, which is not only wrong, but also totally unnecessary.

    It is ironic since doing things accurately you will indeed get an ECS of about 0.5K..

    1. James H. Shanley

      Can you provide any scientific info that shows that atmospheric temps. have a high sensitivity to CO2? Inasmuch as you advocate taking drastic measures to correct a problem that may not exist, I think the proof falls on you. The AGW scam goes back 60 plus yrs, surely you can find a paper that supports the AGW position.

  18. Weekly Climate and Energy News Roundup #487 – Watts Up With That?

    […] Nearly 140 Scientific Papers Detail The Minuscule Effect CO2 Has On Earth’s Temperature […]

  19. James H. Shanley

    With all the talk about climate sensitivity I question whether anyone can produce a paper that proves CO2 has a high sensitivity to climate. Also it seems obvious that water vapor does cool the earth but it is not the only mechanism as we know deserts areas cool at night by as much as 36 F. CO2 is there and it does nothing.

  20. Fast 140 wissenschaftliche Studien weisen detailliert die minimale Auswirkung von CO2 auf die Temperatur der Erde nach | EIKE - Europäisches Institut für Klima & Energie
  21. Fast 140 wissenschaftliche Studien weisen detailliert die minimale Auswirkung von CO2 auf die Temperatur der Erde nach - FreeSpeech.international

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