411 REFERENCE · Wiktionary
Köppen climate classification
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
First published in 1884 by German-Russian climatologist Wladimir Köppen (1846–1940).
Proper noun
A classification system that divides climates into five main groups, each further subdivided based on patterns of seasonal precipitation and temperature.
en eponyms