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ABSTRACT
Two completely different explanations of the so-called
atmospheric greenhouse effect are scrutinized: First, the explanation
of the American Meteorological Society (AMS) and the World Meteorological
Organization (WMO) quantifying this effect by two characteristic temperatures,
secondly, the explanation of Ramanathan et al. (1987) that is mainly
based on an energy-flux budget for the Earth-atmosphere system. Both
explanations are related to the global scale. In addition, the meaning
of climate, climate change, and climate variability is discussed to outline
in which way the atmospheric greenhouse effect might be responsible for
climate change and climate variability, respectively. In doing so, it
is distinguish between two different branches of climatology, namely
(a) physical climatology in which the boundary conditions of the Earth-atmosphere
system play the most dominant role and (b) statistical climatology that
is dealing the statistical description of fortuitous weather events that
had been happening in climate periods; each of them usually comprises
30 years. Based on the findings, it is argue that (a) the so-called atmospheric
greenhouse effect cannot be proved by the statistical description of
fortuitous weather events that took place in a climate period, (b) the
description by AMS and WMO has to be discarded because of physical reasons,
(c) energy-flux budgets for the Earth-atmosphere system do not provide
any evidence that the atmospheric greenhouse effect does exist.
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