Wladimir Köppen
Wladimir Petrovich Köppen was a Russian–German geographer, meteorologist, climatologist and botanist. After studies in St. Petersburg, he spent the bulk of his life and professional career in Germany and Austria. The Köppen climate classification system, named after a proposal he first made in 1884, with some modifications, is still widely used. Köppen made significant contributions to several branches of science, and coined the name aerology for the science of the upper atmosphere.
Source: Wikipedia
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