Rudolf Geiger

Rudolf Oskar Robert Williams Geiger (/ˈɡaɪɡər/; German: [ˈɡaɪɡɐ]; 24 August 1894 – 22 January 1981) was a German meteorologist and climatologist. He was the son of Indologist Wilhelm Geiger and the brother of physicist Hans Geiger. He worked with Wladimir Köppen on climatology, hence the Köppen–Geiger climate classification.^[1]

Rudolf Geiger
Born	Rudolf Oskar Robert Williams Geiger 24 August 1894 Erlangen, German Empire
Died	22 January 1981(1981-01-22) (aged 86) Munich, West Germany
Nationality	German
Known for	Köppen–Geiger climate classification
Scientific career
Fields	Meteorology