The atmospheric greenhouse effect, an idea the authors trace back to the traditional works of Fourier 1824, Tyndall 1861 and Arrhenius 1896, but which is still supported in global climatology, essentially describes a fictitious mechanism by which a planetary atmosphere acts as a heat pump driven by an environment that is radiatively interacting with but radiatively equilibrated to the atmospheric system.
According to the second law of thermodynamics such a planetary machine can never exist. Nevertheless, in almost all texts of global climatology and in widespread secondary literature it is taken for granted that such a mechanism is real and stands on a firm scientific foundation. In this paper the popular conjecture is analyzed and the underlying physical principles clarified.
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If CO2 exhibited such an extreme effect, however, this would show up as a thermal conductivity anomaly even in an elementary laboratory experiment. Carbon dioxide would manifest itself as a new kind of 'super-insulation,' wildly violating the conventional heat-conductivity equation.
Such anomalous heat transport properties never have been observed in CO2, of course. The influence of CO2 on climate was discussed thoroughly in a number of publications that appeared between 1909 and 1980, mainly in Germany. The most influential authors were Möller, who also wrote a textbook on meteorology, and Manabe. It seems that the combined work of Möller and Manabe has had a significant influence on the formulation of modern atmospheric CO2 greenhouse conjectures. In a very comprehensive report from the US Department of Energy (DOE), which appeared in 1985, the atmospheric greenhouse hypothesis was cast into its final form and became the cornerstone in all subsequent IPCC publications.
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The main objective of our paper is not to draw the line between error and fraud, only to find out whether the greenhouse effect appears or disappears within the frame of physics. Therefore, in Section 3.3 several different variations of the atmospheric greenhouse hypotheses are examined and disproved. The authors restrict themselves to statements that appeared after a publication by Lee in the well-known Journal of Applied Meteorology 1973, see Ref. [109] and references therein.
Lee's 1973 paper is a milestone. In the beginning Lee writes: The so-called radiation `greenhouse' effect is a misnomer. Ironically, while the concept is useful in describing what occurs in the earth's atmosphere, it is invalid for crypto-climates created when space is enclosed with glass, e.g. in greenhouses and solar energy collectors. Specifically, elevated temperatures observed under glass cannot be traced to the spectral absorptivity of glass. The misconception was demonstrated experimentally by R. W. Wood more than 60 years ago and recently in an analytical manner by Businger.
Fleagle and Businger devoted a section of their text to the point, and suggested that radiation trapping by the earth's atmosphere should be called `atmosphere effect' to discourage use of the misnomer. In spite of the evidence, modern textbooks on meteorology and climatology not only repeat the misnomer, but frequently support the false notion that `heat-retaining behavior of the atmosphere is analogous to what happens in a greenhouse' (Miller, 1966).
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The conclusion of the US Department of Energy All fictitious greenhouse effects have in common one and only one cause: A rise in the concentration of CO2 in the atmosphere leading to higher air temperatures near the ground. Lee's 1973 result that the warming phenomenon in a glass house does not compare to the supposed atmospheric greenhouse effect was confirmed in the 1985 report of the United States Department of Energy Projecting the climatic effects of increasing carbon dioxide".
In this comprehensive pre-IPCC publication MacCracken explicitly states that the terms greenhouse gas" and greenhouse effect" are misnomers.
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The natural greenhouse effect is a myth, not a physical reality. The CO2-greenhouse effect, however, is a manufactured mirage.
Horrific visions of a rising sea level, melting pole caps and spreading deserts in North America and Europe are fictitious consequences of a fictitious physical mechanism which cannot be seen even in computer climate models.
More and more, the main tactic of CO2-greenhouse gas defenders seems to be to hide behind a mountain of pseudo-explanations that are unrelated to an academic education or even to physics training.
The points discussed here were to answer whether the supposed atmospheric effect in question has a physical basis. It does not.
In summary, no atmospheric greenhouse effect, nor in particular a CO2-greenhouse effect, is permissible in theoretical physics and engineering thermodynamics.
It is therefore illegitimate to use this fictitious phenomenon to extrapolate predictions as consulting solutions for economics and intergovernmental policy.