Bjerknes, Jacob

▪ Norwegian-American meteorologist
born November 2, 1897, Stockholm, Swed.
died July 7, 1975, Los Angeles, Calif., U.S.

      Norwegian American meteorologist whose discovery that cyclones (low-pressure centres) originate as waves associated with sloping weather fronts that separate different air masses proved to be a major contribution to modern weather forecasting.

      The work of his father, the Norwegian physicist and meteorologist Vilhelm F.K. Bjerknes, influenced Bjerknes in his choice of meteorology as a career. During World War I he assisted his father in establishing a network of weather observation stations throughout Norway. Data gathered by these stations gave rise to their theory of polar fronts, essential to understanding the dynamics of weather in the middle and high latitudes. During the 1920s and 1930s, in addition to his studies of cyclones, he gathered data on the structure of low-pressure centres and conducted research on the dynamics of atmospheric convection.

      In 1939 Bjerknes moved to the United States and the next year became professor of meteorology at the University of California, Los Angeles. After World War II his studies chiefly concerned atmospheric circulation. In 1952 he utilized photographs taken by high-altitude research rockets for weather analysis and forecasting and was thus among those who initiated the use of space-age techniques for meteorological research. In later work he discovered relationships between Pacific Ocean temperatures and North American weather.

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Universalium. 2010.

Look at other dictionaries:

  • Bjerknes Jacob — Jacob Bjerknes Jacob Aall Bonnevie Bjerknes Naissance 2 novembre 1897 Stockholm (Suède) Décès 7 juillet 1975 Los Angeles (États Unis) Nationalité Américaine Champs Météorologie …   Wikipédia en Français

  • Bjerknes, Jacob — Bjerknes , Jacob Aall Bonnevie …   Scientists

  • Bjerknes , Jacob Aall Bonnevie — (1897–1975) Norwegian meteorologist Bjerknes was the son of Vilhelm Bjerknes (1862–1951), a theoretical physicist who developed some of the first mathematical models of atmospheric and oceanic motions. Jacob followed the example of his father in… …   Scientists

  • Jacob Bjerknes — Pour les articles homonymes, voir Bjerknes. Jacob Aall Bonnevie Bjerknes Naissance 2 novembre 1897 Stockholm (Suède) Décès 7 juillet 1975 Los Angeles (États Unis) Nationalité Américaine …   Wikipédia en Français

  • BJERKNES J — NORWAY (see also List of Individuals) 2.11.1897 Stockholm/S 7.7.1975 Los Angeles/USA Jacob Aall Bonnevie Bjerknes was the nephew of Carl Anton (1825 1903) and the son of Vilhelm (1862 1951). Bjerknes made his studies at the Oslo University and… …   Hydraulicians in Europe 1800-2000

  • Bjerknes , Vilhelm Friman Koren — (1862–1951) Norwegian meteorologist. See Bjerknes, Jacob …   Scientists

  • Jacob Bjerknes — Jacob Aall Bonnevie Bjerknes (November 2, 1897, Stockholm, Sweden ndash; July 7, 1975, Los Angeles, California) was a Norwegian American meteorologist. His father was the Norwegian meteorologist Vilhelm Bjerknes (1862 ndash;1951), one of the… …   Wikipedia

  • Jacob Bjerknes — Jacob Aall Bonnevie Bjerknes (* 2. November 1897 in Stockholm; † 7. Juli 1975 in Los Angeles) war ein norwegisch amerikanischer Meteorologe. Sein Vater war Vilhelm Bjerknes, sein Großvater mütterlicherseits war Jacob Aall Bonnevie. Bjerknes war… …   Deutsch Wikipedia

  • Bjerknes — ist der Familienname folgender Personen: Carl Anton Bjerknes (1825–1903), norwegischer Mathematiker und Physiker Jacob Bjerknes (1897–1975), norwegischer Meteorologe Kristian Bjerknes (1901–1981), norwegischer Architekt, Konservator und Autor… …   Deutsch Wikipedia

  • Bjerknes — may refer to: *Jacob Bjerknes (1897–1975), Norwegian American meteorologist *Vilhelm Bjerknes (1862–1951), Norwegian physicist and meteorologist *Bjerknes (crater), a lunar crater …   Wikipedia

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