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NOYAU GLACIGENE [1 record]

Record 1 2020-07-22

English

Subject field(s)
  • Atmospheric, Climatic and Meteorological Phenomena
  • Glaciology
DEF

[A] nucleus which sets up the formation of ice crystals in the atmosphere ...

CONT

An ice nucleus may be either a freezing nucleus or a sublimation nucleus. Recent studies of ice nucleation strongly indicate that natural ice nuclei, whatever their exact physicochemical nature, are freezing nuclei rather than sublimation nuclei.

OBS

ice nucleus; ice-forming nucleus; ice-producing nucleus: The plural form of "nucleus" is "nuclei."

Key term(s)
  • ice nuclei
  • ice-forming nuclei
  • ice-producing nuclei

French

Domaine(s)
  • Phénomènes météorologiques, climatiques et atmosphériques
  • Glaciologie
DEF

Noyau donnant naissance à de la glace [...]

CONT

[...] certains aérosols, appelés «noyaux glacigènes», peuvent provoquer la nucléation de gouttelettes à des températures de l'ordre de -4 °C; plus la température est basse, plus ils sont actifs, et c'est ainsi qu'à -20 °C, près de 90 % des gouttelettes ont été nucléées en glace.

Spanish

Campo(s) temático(s)
  • Fenómenos meteorológicos, climáticos y atmosféricos
  • Glaciología
DEF

Núcleo que ocasiona la formación de cristales de hielo.

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