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Vilhelm Friman Koren Bjerknes

(1862—1951) Norwegian geophysicist and meteorologist

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Bergen School

Overview page. Subjects: Ecology and Conservation — Earth Sciences and Geography.

The name used to distinguish the group of meteorologists (Vilhelm Bjerknes, his son Jacob Bjerknes, H. Solberg, and Tor Bergeron) who, working at the Bergen Geophysical Institute, in...

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dry intrusion

Overview page. Subjects: Meteorology and Climatology.

An area associated with the cold front of a depression, where the equatorward branch of the cold conveyor belt causes cold, dry air from the upper troposphere and lower stratosphere to...

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front

Overview page. Subjects: Earth Sciences and Geography.

A sharp transition zone in the atmosphere that separates adjacent air masses which have different temperatures and origins. Also known as a frontal system or frontal zone.

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Jacob Aall Bonnevie Bjerknes

Overview page. Subjects: Meteorology and Climatology.

(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...

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meteorology

Overview page. Subjects: History — Meteorology and Climatology.

The study and science of all aspects of the atmosphere—weather and climate—aiming to understand the physical and chemical nature of the atmosphere, its dynamical behaviour, and its complex...

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numerical weather prediction

Overview page. Subjects: Meteorology and Climatology.

Numerical weather prediction (NWP) uses current weather conditions as input into numerical (mathematic) models, which are composed of a set of partial differential equations that express...

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Rossby waves

Overview page. Subjects: Meteorology and Climatology.

Named after the Swedish-American meteorologist C. -G. Rossby (1898– 1957), Rossby waves are equatorward troughs and poleward ridges forming long waves in the circumpolar flow of the upper...

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Sir William Napier Shaw

Overview page. Subjects: Meteorology and Climatology.

(b. Birmingham, 4 March 1854; d. London, 23 March 1945) British meteorologist who was largely responsible for turning the Meteorological Office from a primarily clerical organization into a...

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squall line

Overview page. Subjects: Ecology and Conservation.

A series of squalls, in which the wind speed increases by up to 50 per cent then dies away gradually, associated with very vigorous cumulonimbus clouds that merge to form a continuous line...

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steering line

Overview page. Subjects: Meteorology and Climatology.

A term applied by Vilhelm Bjerknes to the inner edge of the area of precipitation at a warm front, because it apparently determined the direction of motion of the front.

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