TERMIUM Plus®

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sigma coordinate system [1 record]

Record 1 2004-06-02

English

Subject field(s)
  • Atmospheric Physics
DEF

Modification of the pressure coordinate system so that the vertical ordinate (s) is equal to the pressure (p) normalized by the surface pressure (ps), i.e., s = p/ps.

OBS

s is therefore non-dimensional and decreases upwards from s = 1 at the surface to s = 0 at the top of the atmosphere.

French

Domaine(s)
  • Physique de l'atmosphère
DEF

Version modifiée du système de coordonnées de pression dans laquelle l'ordonnée verticale (s) est égale à la pression (p) normalisée par rapport à la pression au sol (ps), soit s = p/ps.

OBS

s est ainsi un nombre sans dimension qui décroît avec l'altitude, depuis s = 1 à la surface jusqu'à s = 0 au sommet de l'atmosphère.

Spanish

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

Modificación del sistema de coordenadas de presión en el cual la coordenada vertical (s) es la presión (p) normalizada con respecto a la presión en la superficie, ps; o sea: s = p/ps (s carece de dimensiones y decrece en sentido vertical hacia arriba desde s = 1 en el suelo a s = 0 en la cima de la atmósfera).

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