TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

Theory of cyclogenesis according to which an invasion of polar air into the zone of dominant westerlies acts as a barrier to these winds and gives rise to a depression on the side of the invading air downwind from the westerlies, i.e., to the east of the invading air.  3, record 1, English, - barrier%20theory

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Théorie de la cyclogénèse dans laquelle une invasion de l'air polaire dans la zone des vents d'ouest dominants agit comme une barrière pour ces vents et produit une dépression sur la face de cette invasion située «sous» les vents d'ouest, donc à l'est de cette invasion.  3, record 1, French, - th%C3%A9orie%20de%20la%20barri%C3%A8re

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

Teoría de la ciclogénesis según la cual una invasión de aire polar en la zona donde predominan los vientos del oeste, actúa como una barrera para ellos y origina una depresión corriente abajo de los vientos del oeste; esto es, en el sector este de la masa de aire que realiza la penetración.  1, record 1, Spanish, - teor%C3%ADa%20de%20la%20barrera

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

The obliteration of contrast between surface features in the Antarctic when a covering of snow obscuring all landmarks is accompanied by an overcast sky, resulting in an absence of shadows and an unrelieved expanse of white, the earth and sky blending so that the horizon is not distinguishable.  3, record 2, English, - antarctic%20whiteout

Record number: 2, Textual support number: 1 OBS

A similar occurrence in the Arctic is called arctic whiteout.  3, record 2, English, - antarctic%20whiteout

Record number: 2, Textual support number: 2 OBS

There are two different forms of a whiteout: 1. In blizzard conditions, the windblown snow in the air may simply make it too difficult to see very far. 2. In clear air conditions, when there is no snow falling, diffuse lighting from overcast cloud may cause all surface definition to disappear.  4, record 2, English, - antarctic%20whiteout

Record number: 2, Textual support number: 3 OBS

True whiteouts occur mostly in the Arctic and the Antarctic when unbroken snow cover and a uniformly overcast sky combine to produce a solid white glow. People in whiteouts see no shadows or horizon and lose all sense of depth and orientation.  5, record 2, English, - antarctic%20whiteout

Record number: 2, Textual support number: 4 OBS

In polar regions this optical illusion can make whole snow-covered mountains invisible against the background white cloud, and the horizon cannot be identified, slopes cannot be judged for steepness, and snow surfaces cannot be seen. It is only when a dark or coloured object is placed on a snowy surface that the surface can be seen at all.  4, record 2, English, - antarctic%20whiteout

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 OBS

voile blanc : Phénomène optique atmosphérique des régions recouvertes de neige qui fait que l'observateur semble enveloppé dans une lueur blanche uniforme.  2, record 2, French, - voile%20blanc%20antarctique

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 CONT

La visibilidad puede llegar a ser nula con la aparición de fenómenos como el alborismo polar ("whiteout"), típico de zonas del Ártico y [de la Antártida].  2, record 2, Spanish, - alborismo%20polar

Record number: 2, Textual support number: 1 OBS

alborismo polar : El término español es genérico con respecto al inglés y francés, que especifican en qué zona se produce este fenómeno meteorológico.  3, record 2, Spanish, - alborismo%20polar

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

The obliteration of contrast between surface features in the Arctic when a covering of snow obscuring all landmarks is accompanied by an overcast sky, resulting in an absence of shadows and an unrelieved expanse of white, the earth and sky blending so that the horizon is not distinguishable.  3, record 3, English, - arctic%20whiteout

Record number: 3, Textual support number: 1 CONT

"Arctic white-out" causes difficulties for air traffic. This occurs when there is a heavy overcoat on a uniformly white surface. The result is a loss of depth perception that makes take-off and landing difficult. As well, fog or blowing snow may reduce visibility.  2, record 3, English, - arctic%20whiteout

Record number: 3, Textual support number: 2 CONT

... arctic ... whiteout ... is particularly prevalent in northern Alaska during late winter and early spring.  4, record 3, English, - arctic%20whiteout

Record number: 3, Textual support number: 1 OBS

A similar occurrence in the Antarctic is called "antarctic whiteout."  3, record 3, English, - arctic%20whiteout

Record number: 3, Textual support number: 2 OBS

There are two different forms of a whiteout: 1. In blizzard conditions, the windblown snow in the air may simply make it too difficult to see very far. 2. In clear air conditions, when there is no snow falling, diffuse lighting from overcast cloud may cause all surface definition to disappear.  5, record 3, English, - arctic%20whiteout

Record number: 3, Textual support number: 3 OBS

In polar regions this optical illusion can make whole snow-covered mountains invisible against the background white cloud, and the horizon cannot be identified, slopes cannot be judged for steepness, and snow surfaces cannot be seen. It is only when a dark or coloured object is placed on a snowy surface that the surface can be seen at all.  5, record 3, English, - arctic%20whiteout

Record number: 3, Textual support number: 4 OBS

True whiteouts occur mostly in the Arctic and the Antarctic when unbroken snow cover and a uniformly overcast sky combine to produce a solid white glow. People in whiteouts see no shadows or horizon and lose all sense of depth and orientation.  6, record 3, English, - arctic%20whiteout

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Kugluktuk [...] Des conditions pratiquement constantes de voile blanc arctique et de tempêtes ont provoqué des facteurs de refroidissement éolien élevés et réduit la visibilité presque à zéro, sans compter les trois maigres heures de clarté par jour qui rendaient les recherches extrêmement difficiles.  1, record 3, French, - voile%20blanc%20arctique

Record number: 3, Textual support number: 1 OBS

voile blanc : Phénomène optique atmosphérique des régions recouvertes de neige qui fait que l'observateur semble enveloppé dans une lueur blanche uniforme.  2, record 3, French, - voile%20blanc%20arctique

Record 3,  Textual support,  Spanish

Record number: 3, Textual support number: 1 CONT

La visibilidad puede llegar a ser nula con la aparición de fenómenos como el alborismo polar (whiteout), típico de zonas del Ártico y [de la Antártida].  2, record 3, Spanish, - alborismo%20polar

Record number: 3, Textual support number: 1 OBS

alborismo polar : El término español es genérico con respecto al inglés y francés, que especifican en qué zona se produce este fenómeno meteorológico.  3, record 3, Spanish, - alborismo%20polar

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

The planetary-scale cyclonic circulation, centered generally in the polar regions, extending from the middle troposphere to the stratosphere.  5, record 4, English, - polar%20vortex

Record number: 4, Textual support number: 1 OBS

The westerly airflow is largely a manifestation of the thermal wind above the polar frontal zone of middle and subpolar latitudes. The vortex is strongest in winter when the pole-to-equator temperature gradient is strongest. In the Northern Hemisphere, the vortex has two centers in the mean, one near Baffin Island and the other over northeast Siberia.  5, record 4, English, - polar%20vortex

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Tourbillon créé en haute troposphère, au-dessus de chacun des pôles géographiques, par la circulation cyclonique des vents d'ouest.  2, record 4, French, - tourbillon%20circumpolaire

Record number: 4, Textual support number: 1 CONT

Le phénomène du trou d'ozone est renforcé par l'existence de ce que l'on nomme le vortex polaire, un modèle de circulation particulier à la stratosphère au-dessus du pôle sud au cours de l'hiver austral et qui isole cette région de son environnement [...]  4, record 4, French, - tourbillon%20circumpolaire

Record number: 4, Textual support number: 1 OBS

Le tourbillon circumpolaire isole la couche d'ozone polaire des masses d'air environnantes, plus riches en ozone.  2, record 4, French, - tourbillon%20circumpolaire

Record number: 4, Textual support number: 2 OBS

Dans les textes techniques récents, probablement sous l'influence de l'anglais, c'est le terme «vortex polaire» qu'on emploie généralement.  2, record 4, French, - tourbillon%20circumpolaire

Record 4,  Textual support,  Spanish

Record number: 4, Textual support number: 1 DEF

Zona semi aislada de circulación ciclónica constituida cada invierno en la estratosfera polar.  3, record 4, Spanish, - v%C3%B3rtice%20polar

Record number: 4, Textual support number: 1 CONT

El vórtice polar austral es más fuerte que el septentrional. El vórtice aumenta el agotamiento del ozono al retener aire muy frío que contiene aerosoles y en el cual pueden tener lugar las reacciones de destrucción del ozono.  3, record 4, Spanish, - v%C3%B3rtice%20polar

Record number: 4, Textual support number: 2 CONT

Al fenómeno que azota EE.UU. [Estados Unidos] se lo denomina “vórtice polar”. Es un sistema de baja presión profunda que se extiende a los niveles superiores de la atmósfera y hace descender masas heladas de aire que, por lo general, circulan alrededor del Círculo Polar Ártico.  4, record 4, Spanish, - v%C3%B3rtice%20polar

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

The fundamental unit of magnetopolarity classification; a unit of rock characterized by its magnetic signature.  3, record 5, English, - polarity%20zone

Record number: 5, Textual support number: 1 OBS

magnetopolarity zone, rather than polarity zone, should be used where there is risk of confusion with other kinds of polarity.  4, record 5, English, - polarity%20zone

Record 5,  Textual support,  French

Record 5,  Textual support,  Spanish