TERMIUM Plus®

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anemometer level [2 records]

Record 1 2015-03-12

English

Subject field(s)
  • Measuring Instruments
  • Weather Stations and Meteorological Instruments and Equipment
DEF

Height above ground at which an anemometer is exposed.

French

Domaine(s)
  • Appareils de mesure
  • Stations, instruments et équipements météorologiques
DEF

Hauteur au-dessus du sol à laquelle un anémomètre est installé.

Spanish

Campo(s) temático(s)
  • Instrumentos de medida
  • Estaciones, instrumentos y equipos meteorológicos
DEF

Altura sobre el suelo donde está instalado el anemómetro.

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Record 2 1992-12-31

English

Subject field(s)
  • Climatology
CONT

A stationary and non-accelerating flow is described with du/dt = dv/dt = 0. With this, (7-3) becomes a set of differential equations for u, v whose solution yields the Ekman spiral. However, if we are not interested in accurate solutions and consider one layer only, we can see the meaning of the friction force as first shown by C. M. Guldberg and H. Mohn in 1883. The wind profile near the earth's surface is usually convex, if represented on a graph with wind speed versus height. The wind speed increases from zero at the earth's surface to significant values near the anemometer level, and further increase of wind speed with height continues at a slower rate. In this situation, the second derivatives of u and v may be assumed proportional to -u and -v, respectively:

French

Domaine(s)
  • Climatologie
DEF

Niveau immédiatement au-dessus de la couche limite de surface qui est pris comme point initial de la spirale d'Ekman.

Spanish

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