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Vilhelm Bjerknes




Vilhelm Friman Koren Bjerknes ( March 14 , 1862 - April 9 , 1951 ) was a Norwegian Physicist and Meteorologist who did much to found the modern practice of Weather Forecasting .

Born in Christiania , Bjerknes enjoyed an early exposure to Fluid Dynamics , assisting his father, Carl Anton Bjerknes , in his mathematical research. In 1890 , he became assistant to Heinrich Hertz and made substantial contributions to Hertz' work on Electromagnetic Resonance .

In 1895 , he became professor of applied mechanics and mathematical physics at the University Of Stockholm where he elucidated the fundamental interaction between fluid dynamics and Thermodynamics . It was this work that inspired both V. Walfrid Ekman and Carl-Gustav Arvid Rossby to apply it to large-scale motions in the Ocean s and Atmosphere and to make modern weather forecasting feasible. Bjerknes himself had foreseen the possible applications as early as 1904 .

In 1907 , Bjerknes returned to the University Of Kristiania before becoming professor of Geophysics at the University Of Leipzig in 1912 . In 1917 , he founded the Bergen Geophysical Institute where he wrote his book ''On the Dynamics of the Circular Vortex with Applications to the Atmosphere and to Atmospheric Vortex and Wave Motion'' ( 1921 ) and laid the foundation for the " Bergen School Of Meteorology ". From 1926 to his retirement in 1932 he held a position at the University Of Oslo , where he died.

His son was the meteorologist Jacob Bjerknes ( 1897 - 1975 ).

Bjerknes Crater on the Moon and a crater on Mars were named in his honor.