ABSTRACT

Science has established that processes of human origin are influencing the climate-that human beings are changing the global climate. Climate is the statistics of the weather. In almost all localities, at present and in the foreseeable future, the frequency distributions of the temperature continue to shift to higher values; sea level is rising; amounts of rainfall are changing. Some extremes, such as heavy rainfall events, will change. The driving force behind these alterations is above all the emission of greenhouse gases, in particular carbon dioxide and methane, into the atmosphere, where they interfere with the radiative balance of the earth system. This is the scientific construct of human-made climate change. It is widely

supported within the relevant scientific communities, and has been comprehensively formulated particularly owing to the collective and consensual efforts of the UN Intergovernmental Panel on Climate Change (IPCC).2