\begin{abstract}
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The atmospheric greenhouse effect, an idea that authors trace back to the 
traditional works of Fourier 1824, Tyndall 1861, and Arrhenius 1896, and 
which is still supported in global climatology, essentially describes a fictitious 
mechanism, in which a planetary atmosphere acts as a heat pump driven by an 
environment that is 
\textit{radiatively interacting with} 
but 
\textit{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 a widespread secondary literature 
it is taken for granted that such mechanism is real and stands on a firm 
scientific foundation. In this paper the popular conjecture is analyzed and the 
underlying physical principles are clarified. By showing that (a) there are no 
common physical laws between the warming phenomenon in glass houses and the 
fictitious atmospheric greenhouse effects, (b) there are no calculations to 
determine an average surface temperature of a planet, (c) the frequently 
mentioned difference of 33~$^\circ{\rm C}$ is a meaningless number calculated 
wrongly, (d) the formulas of cavity radiation are used inappropriately, (e) the 
assumption of a radiative balance is unphysical, (f) thermal conductivity and 
friction must not be set to zero, the atmospheric greenhouse conjecture is falsified.
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\end{abstract}
