TERMIUM Plus®

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HORIZONTAL REFERENCE SURFACE [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2023-02-23

English

Subject field(s)
  • Atmospheric Physics
  • Environmental Studies and Analyses
CONT

If the earth were not rotating, the wind would blow exclusively from high to low pressure. Close to the earth, it would be slowed by friction between the atmosphere and the earth's surface but would maintain the same direction with height. However, since the earth undergoes rotation, there is an apparent force acting on horizontal atmospheric motions when examined from a point of reference on the earth's surface. For example, [as] viewed from space(the absolute frame of reference), the [wind] flow [continues] in a straight line. However, as viewed from the earth, the flow has undergone an apparent deflection to the right.

French

Domaine(s)
  • Physique de l'atmosphère
  • Études et analyses environnementales
OBS

mouvement atmosphérique horizontal; mouvement horizontal atmosphérique : désignations habituellement utilisées au pluriel.

Key term(s)
  • mouvements atmosphériques horizontaux
  • mouvements horizontaux atmosphériques

Spanish

Save record 1

Record 2 2010-03-11

English

Subject field(s)
  • Mathematical Geography
  • Meteorological Forecasting, Data Measurement and Analysis
DEF

A reduction applied to a measured horizontal length on the earth's surface to reduce it to the surface of the sea level datum of the reference spheroid.

Key term(s)
  • sea level reduction

French

Domaine(s)
  • Géographie mathématique
  • Prévisions météorologiques et mesure et analyse des données
DEF

Modification apportée aux observations barométriques de détermination d'altitudes pour tenir compte de la différence d'altitude entre la station de référence et le niveau de la mer.

CONT

[La] réduction au niveau de la mer [est un] procédé de calcul permettant de rendre comparables des grandeurs météorologiques, à différents niveaux dans l'atmosphère, dont les valeurs varient systématiquement en fonction de l'altitude. C'est principalement sur la pression et la température que l'on opère de tels ajustements.

CONT

Pour une réduction au niveau de la mer veuillez ajouter 64.2 hPa aux valeurs dans le tableau (conformément à l'ICAO).

Spanish

Campo(s) temático(s)
  • Geografía matemática
  • Previsiones meteorológicas, medición y análisis de datos
Save record 2

Record 3 2005-01-05

English

Subject field(s)
  • Cartography
  • Applications of Automation
  • Mathematical Geography

French

Domaine(s)
  • Cartographie
  • Automatisation et applications
  • Géographie mathématique

Spanish

Save record 3

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