TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

thermal belt [3 records]

Record 1 2004-09-23

English

Subject field(s)
  • Climatology
DEF

Very generally, a portion of the Earth's surface defined by relatively uniform [temperature] characteristics and usually bounded by lines corresponding to selected values of some measure of temperature or temperature effect.

OBS

All of the following may be considered "temperature zones": A. Supan's 1879 hot belt, temperate belt, and cold cap; W. Köppen's 1936 tropical rainy climates, temperate rainy climates, snow forest climates, and polar climates; C. W. Thornthwaite's 1931 temperature provinces. It is occasionally used for a vertical subdivision of thermal belts in mountainous terrain.

French

Domaine(s)
  • Climatologie
DEF

Très généralement, partie de la surface terrestre définie par des caractéristiques relativement uniformes et habituellement délimitée par des lignes correspondant à des valeurs choisies de la température ou d'un effet de la température.

Spanish

Campo(s) temático(s)
  • Climatología
DEF

En términos muy generales, parte de la superficie terrestre definida por características relativamente uniformes y limitada habitualmente por líneas que corresponden a valores elegidos de la temperatura o a un efecto de ésta.

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Record 2 2004-09-13

English

Subject field(s)
  • Atmospheric Physics
  • Plant and Crop Production
DEF

That warmest part of a slope above a valley floor lying between the layer of cold air that forms over the valley floor on calm, clear nights and the cold hilltops or plateaus.

CONT

Silas McDowell (1795-1879) was a southern pomologist and a botanist of renown ... during the 1850s. ... He was the originator of the "thermal belt" concept which is a zone on a mountainside where frost and freezes are less common than in the valleys and on the mountaintops.

OBS

The air flowing down the slopes is warmed by mixing with the air above ground level and to some extent also by adiabatic compression. The frostless zone is not a fixed belt but varies in level from night to night and season to season according to the initial temperature, the length of the night, and the clearness of the sky. Its lower limit is sometimes clearly marked by the upper limit of frost damage to crops, following the hillsides at a small angle to the horizontal.

French

Domaine(s)
  • Physique de l'atmosphère
  • Cultures (Agriculture)
DEF

Partie la plus chaude d'une pente au-dessus du fond d'une vallée, située entre la couche d'air froid qui se forme au fond de la vallée par nuit claire et calme et les sommets froids ou les plateaux.

Spanish

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Record 3 2004-09-13

English

Subject field(s)
  • Climatology
DEF

Any one of several possible horizontal belts of vegetation type found in mountainous terrain, as the result of vertical temperature variations, e.g., frostless zone, timber-line, etc.

French

Domaine(s)
  • Climatologie
DEF

L'une des zones horizontales de végétation que l'on peut trouver en terrain montagneux du fait des variations verticales de la température, p. ex. zone sans gelée, limite forestière, etc.

Spanish

Campo(s) temático(s)
  • Climatología
DEF

Cualquiera de las zonas horizontales de vegetación que pueden encontrarse en terreno montañoso, que resultan de variaciones verticales de la temperatura; por ejemplo, zona sin heladas, límite forestal, etc.

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