The paper presents a new approach to the anthropogenic global warming hypothesis compared to the commonly discussed and accepted theories based on the influence of increasing emission of greenhouse gases mainly carbon dioxide, methane nitrous oxide and water vapour - into our environment. The presented interpretation of the global warming phenomenon is based on an analysis of radiation properties, mainly absorptivity, of greenhouse gases and their influence on the intensity of heat transfer within the atmospheric gas layer. It is proven that an increase in actual greenhouse gases concentration does not play a substantial role in the global warming of the tropospheric air layer.