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MESOJET [1 record]

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Record 1 1992-12-31

English

Subject field(s)
  • Atmospheric Physics
DEF

Jet stream with less than synoptic dimensions.

CONT

Mesojet ... typically may have an along-flow length scale of tens to hundreds of kilometers and a cross-flow length scale of 100 km. Mesojets differ from planetary-scale jets, which can have length scales of several thousand kilometers, and synoptic-scale jets, which may have length scales of 1000-2000 km and are commonly found in association with progressive synoptic-scale troughs and ridges. Larger mesojets may also sometimes be known as jet streaks. Mesojets can form adjacent to prominent orographic features in association with terrain-channeled flow. Mesojets are also seen in association with organized mesocale convective systems as typified by the evaporatively driven rear-inflow jet commonly found behind active squall lines lines. Mesojets may also be found in conjunction with prominent lower-tropospheric stable layers where the airflow can become decoupled from the planetary boundary layer, especially at night. An exceptionally well organized lower-tropospheric mesojet extending over hundreds of kilometers might be known as a low-level jet.

Key term(s)
  • meso-jet

French

Domaine(s)
  • Physique de l'atmosphère
DEF

Courant-jet dont l'extension spatiale est moindre que l'échelle synoptique.

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
DEF

Corriente en chorro de dimensiones inferiores a las sinópticas.

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