Authors Gerhard Gerlich and Ralf D. Tscheuschner argue that within the frame of physics there can be no greenhouse effect.
Abstract: The atmospheric greenhouse effect, an idea that many 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 radiatively interacting with but radiatively equilibrated to the atmospheric system. According to the second law of thermodynamics such a planetary machine can never exist [emphasis added]. 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 degrees Celsius 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.
When you get down to it, this discussion of facts and their applicability is what makes science fun. Science should not be subverted by politics and ideology.
Here’s a draft of their paper, Falsification Of The Atmospheric CO2 Greenhouse Effects Within The Frame Of Physics:
http://www.tsch.de/a-falsification/pdf/0707.1161v4.pdf
Nullius in Verba 