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ROLL-SHAPED CLOUD [1 record]
Record 1 - internal organization data 2005-07-21
Record 1, English
Record 1, Subject field(s)
- Atmospheric Physics
Record 1, Main entry term, English
- roll cloud
1, record 1, English, roll%20cloud
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- roll-shaped cloud 2, record 1, English, roll%2Dshaped%20cloud
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A low-level, horizontal, tube-shaped arcus cloud associated with a gust front of a convective storm (or occasionally a cold front). 3, record 1, English, - roll%20cloud
Record number: 1, Textual support number: 1 CONT
Roll clouds are relatively rare; they are completely detached from the convective storm's cloud base, thus differentiating them from the more familiar shelf clouds. Roll clouds appear to be rolling about a horizontal axis because of the shearing effects and horizontal vorticity provided by the differing air masses. 3, record 1, English, - roll%20cloud
Record number: 1, Textual support number: 1 OBS
Unlike a roll cloud, a shelf cloud is attached to the base of the parent cloud above it (usually a thunderstorm). 4, record 1, English, - roll%20cloud
Record number: 1, Textual support number: 2 OBS
Roll clouds and shelf clouds are both types of arcus clouds. 5, record 1, English, - roll%20cloud
Record number: 1, Textual support number: 3 OBS
Roll clouds are not and do not produce tornadoes. 5, record 1, English, - roll%20cloud
Record number: 1, Textual support number: 4 OBS
Roll clouds ... should not be confused with funnel clouds. 4, record 1, English, - roll%20cloud
Record 1, French
Record 1, Domaine(s)
- Physique de l'atmosphère
Record 1, Main entry term, French
- nuage en rouleau
1, record 1, French, nuage%20en%20rouleau
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- nuage en forme de rouleau 2, record 1, French, nuage%20en%20forme%20de%20rouleau
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Nuage horizontal dense en forme de rouleau situé sur le bord avant inférieur d'un cumulonimbus. 3, record 1, French, - nuage%20en%20rouleau
Record number: 1, Textual support number: 1 CONT
Nuages en rouleau. Un nuage tubulaire à surface lisse sous un orage peut avoir l'air menaçant, car sa forme effilée comme celle d'un cigare le fait ressembler à une tornade horizontale. Or, les nuages de ce genre résultent d'un flux sortant qui ondule légèrement et révèlent seulement l'avance de l'air frais. Ils ne sont pas reliés à une base sombre compacte et ne présentent aucun danger. 4, record 1, French, - nuage%20en%20rouleau
Record number: 1, Textual support number: 2 CONT
Dans les cas types, [les grains] sont accompagnés d'une baisse soudaine de la température, d'un mouvement du vent dans le sens des aiguilles d'une montre et d'un nuage en forme de rouleau dont la base est dans un axe horizontal. L'ensemble de ces phénomènes porte le nom de ligne de grains. 2, record 1, French, - nuage%20en%20rouleau
Record number: 1, Textual support number: 1 OBS
On trouve également des nuages en rouleau à proximité d'un cumulus à développement rapide. Ils signalent la présence d'une turbulence. 3, record 1, French, - nuage%20en%20rouleau
Record number: 1, Textual support number: 2 OBS
Les nuages en rouleau et étagère sont des types d'Arcus. 5, record 1, French, - nuage%20en%20rouleau
Record 1, Spanish
Record 1, Textual support, Spanish
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