polar front
Noun: 1. The boundary between two distinct air masses, specifically between cold polar air and warmer tropical air: In meteorology, the polar front is a semi-permanent, semi-continuous front that separates the cold polar air mass from the warmer subtropical air mass. It is a primary feature of the mid-latitudes and is a key zone for the development of extratropical cyclones and much of the weather experienced in these regions.
The term is used specifically in meteorological and climatological contexts to describe a major atmospheric feature. * The polar front is a fundamental concept for understanding weather patterns in North America and Europe. * Meteorologists are tracking a low-pressure system developing along the polar front. * The jet stream is closely associated with the position of the polar front.
- Polar Front Theory (Norwegian Cyclone Model): A foundational theory in meteorology developed in the early 20th century that explains the formation, growth, and decay of extratropical cyclones along the polar front.
- The Polar Front Theory revolutionized our understanding of mid-latitude weather systems.
- Front (n.): In meteorology, any boundary separating two air masses of different densities (usually due to differences in temperature and humidity). The polar front is a specific type of front.
- Arctic Front: A similar frontal boundary found farther north, separating Arctic air from polar air.
- Polar Front Jet Stream: The fast-flowing, narrow air current located high in the atmosphere, typically above the polar front.
- Frontal boundary (general term)
- Polar frontal zone (emphasizes it as a region rather than a sharp line)
- Extratropical cyclone: A storm system that often forms on the polar front.
- Jet stream: A high-altitude wind current frequently aligned with the polar front.
- Air mass: A large body of air with uniform temperature and humidity characteristics. The polar front exists where different air masses meet.
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the front of an advancing mass of colder air
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