Jacob Aall Bonnevie Bjerknes
Jacob Aall Bonnevie Bjerknes
1897-1975
Norwegian-American meteorologist who developed the extratropical cyclone model (1919) of modern meteorology while conducting research on weather systems and forecasting techniques with his father Vilhelm Bjerknes and others at Bergen, Norway. Bjerknes and collaborator Halvor Solberg went on to develop frontal theory in terms of warm and cold fronts defined by airmass temperature boundaries. Bjerknes also identified the upper atmospheric wave that generated the surface extratropical cyclone/frontal dynamics. He founded the UCLA department of meteorology and was an early pioneer defining the El Niño mechanism.
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Thermosphere , Based on the vertical temperature profile in the atmosphere, the thermosphere is the highest layer, located above the mesosphere . While in the tropo… Mesosphere , Based on the vertical temperature distribution in Earth's atmosphere, four semi-horizontal layers or "spheres" can be distinguished: the troposphere,… Troposphere , Troposphere
From the Greek word tropos, meaning turning, troposphere is the zone of moisture-laden storms between the surface and the stratosphere ab… Vilhelm Frimann Koren Bjerknes , Bjerknes, Vilhelm Frimann Koren
(b. Christiania [later Kristiania, now Oslo], Norway, 14 March 1862; d. Oslo, 9 April 1951)
physics, geophysics.
Bjer… Cold Front , cold front A boundary between dense, cold air and the warmer air ahead of it, which the cold air tends to undercut as it advances. The gradient of th… Temperature Inversion , temperature inversion An atmospheric condition in which the typical lapse rate is reversed and temperature increases vertically through a given layer…
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Jacob Aall Bonnevie Bjerknes