Designation for the totality of all meteorological processes or possible weather conditions including the typical sequence as well as the daily and seasonal fluctuations, which are responsible for the average state of the earth's atmosphere at a certain place. The name (Greek climate = curvature) is derived from the curvature of the globe and the resulting locally different sun angle. The climate is characterized not only by processes within the atmosphere, but rather by the interplay of all the spheres of the earth (continents, seas, atmosphere) and the solar activity.
As a demarcation to the Weather (Hours to weeks) and the weather (a few days to a week, even a month or a season) is understood as climate over the period of several decades (at least 30 years) statistically determined state of the earth's atmosphere. Areas of the same climatic conditions are classified and classified in climatic zones. There are different classifications; the best known is from the German-Russian climatologist and biologist Vladimir Peter Köppen (1846-1940). This was then continued by the German meteorologist Rudolf Geiger (1894-1981).