Referring to a previous treatise of the author where the climate greenhouse theory is refuted in detail [6], firstly the most relevant arguments against this theory are alleged. Apart from some general reasons being apparent even for laymen, additional special reasons are mentioned. They are related to newly discovered absorption phenomena of IR (infrared) radiation at gases [5]. Measuring the temperature enhancements in a tube made from Styrofoam, it was found that any gas adsorbs IR - even noble gases do so -, being warmed up to a limiting temperature which is achieved when the absorption power is equal to the emission power of the warmed gas. It could be theoretically demonstrated that the emission power of a gas is related to the collision frequency of their particles (atoms or molecules) and thus to their size. This explains that no significant differences could be found between argon, pure carbon-dioxide and air. As a consequence, a «greenhouse effect» does not really exist. It would not even take place if the atmosphere were comprised of pure carbon-dioxide! The respective fallacy traces back to early photometric and spectroscopic measurements where - instead of their temperature enhancement - solely the adsorption degree of gases was detected, disregarding the fact that the absorbed IR-light, which is relevant in this case, is re-emitted rather than transformed to heat. On the other hand, these usual methods are too less sensitive for detecting the here described IR-absorption which leads to a temperature enhancement. Hence, the really occurring temperature enhancement of the atmospheric air due to IR-radiation - be it due to the incident solar light, or be it due to the thermal radiation emitted by the Earth surface - has disregarded so far, while the really not-occurring «greenhouse effect» has been fore grounded.

However, this natural absorption effect by the atmosphere cannot be influenced artificially. Instead, the absorption of sunlight by the Earth surface should be focussed, particularly the one of urban areas. It represents the real cause of global warming, since it remarkably governs the temperature of the atmosphere near the ground. Obviously, darker surfaces adsorb more strongly than bright surfaces do, the former being warmed up more intensely. The ratio between reflected and absorbed radiation is called «albedo». But since measurements of the reflected radiation are quite delicate due to the scattering on the surface, a method has been suggested by the author detecting the temperature enhancement of well-defined coloured solid plates, allowing directly determining the solar absorption coefficients [8]. Based on this method and their results, referring to [9] several measures at buildings are proposed for mitigating the climate, at least the microclimates in cities.