TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

Turbulent, Altocumulus-type cloud formation in the lee of large mountain barriers; the air in the cloud rotates around an axis parallel to the range.  3, record 1, English, - rotor%20clouds

Record number: 1, Textual support number: 1 CONT

In the turbulent under-laminar air layer, more or less visible roll shaped clouds (cumulus or stratocumulus) mark the different waves. When the air moisture content is high, bands of clouds which vary in thickness and length form parallel to the relief. When the air moisture content is low, they disappear completely or are limited to very mobile and short-living light clouds. These clouds are known as rotor clouds or roll clouds. Below the roll clouds, pilots will more than likely experience strong turbulence and winds opposite to the wind gradient, which can make flying generally much more interesting and perhaps hazardous.  2, record 1, English, - rotor%20clouds

Record number: 1, Textual support number: 1 OBS

rotor clouds; roll clouds: The plural form is preferred, since it refers more to a cloud formation than to a particular cloud alone.  4, record 1, English, - rotor%20clouds

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Nuages en forme de rouleaux qui peuvent apparaître dans la partie supérieure des tourbillons stationnaires à axe horizontal et de grande dimension qui accompagnent parfois, dans les basses couches de l'atmosphère, les ondes sous le vent d'une montagne ou d'une chaîne de montagnes.  4, record 1, French, - nuages%20de%20tourbillon%20d%27aval

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

Formación nubosa turbulenta, de tipo Altocumulus, observada a sotavento de grandes barreras montañosas; el aire del interior de la nube alrededor de un eje paralelo a la barrera.  1, record 1, Spanish, - nubes%20de%20rotaci%C3%B3n%20a%20sotavento