- Jacob Bjerknes
Jacob Aall Bonnevie Bjerknes (
November 2, 1897, Stockholm, Sweden– July 7, 1975, Los Angeles, California) was a Norwegian-Americanmeteorologist. His father was the Norwegian meteorologist Vilhelm Bjerknes(1862–1951), one of the pioneers of modern weather forecasting, and his maternal grandfather was Jacob Aall Bonnevie, whence his name.
He was part of a group of meteorologists led by Vilhelm Bjerknes developed the model that explains the generation, intensification and ultimate decay (the life cycle) of midlatitude cyclones, introducing the idea of fronts, that is, sharply defined boundaries between air masses. This concept is known as the
Norwegian cyclone model.
Bjerknes was a support meteorologist when
Roald Amundsenmade the first crossing of the Arctic in the airship Norgein 1926.
* [http://www.agu.org/inside/awards/bjerknes.html Biography at American Geophysical Union (AGU)]
* [http://www.nap.edu/readingroom/books/biomems/jbjerknes.html Biographie de Jacob Bjerknes] by
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