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HOARFROST [2 records]
Record 1 - internal organization data 2012-07-17
Record 1, English
Record 1, Subject field(s)
- Glaciology
Record 1, Main entry term, English
- surface hoar
1, record 1, English, surface%20hoar
correct, officially approved
Record 1, Abbreviations, English
Record 1, Synonyms, English
- feathery crystal 2, record 1, English, feathery%20crystal
correct
- hoar frost 2, record 1, English, hoar%20frost
correct
- hoarfrost 3, record 1, English, hoarfrost
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
Crystals, often shaped like feathers, spikes or wedges, that grow upward from the snow surface when air just above the snow surface is cooled to the dew point. 4, record 1, English, - surface%20hoar
Record number: 1, Textual support number: 1 OBS
The winter equivalent of dew. 4, record 1, English, - surface%20hoar
Record number: 1, Textual support number: 2 OBS
surface hoar: term officially approved by the Avalanche Bulletin Terminology Standardization Committee. 5, record 1, English, - surface%20hoar
Record 1, French
Record 1, Domaine(s)
- Glaciologie
Record 1, Main entry term, French
- givre de surface
1, record 1, French, givre%20de%20surface
correct, masculine noun, officially approved
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Dépôt de glace résultant de la congélation de gouttelettes en surfusion sur des surfaces. 2, record 1, French, - givre%20de%20surface
Record number: 1, Textual support number: 1 OBS
givre de surface : terme uniformisé par le Comité d'uniformisation de la terminologie des bulletins d'avalanche. 3, record 1, French, - givre%20de%20surface
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2012-03-07
Record 2, English
Record 2, Subject field(s)
- Atmospheric, Climatic and Meteorological Phenomena
Record 2, Main entry term, English
- hoar frost
1, record 2, English, hoar%20frost
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- hoarfrost 2, record 2, English, hoarfrost
correct
- hoar-frost 3, record 2, English, hoar%2Dfrost
correct
- white frost 4, record 2, English, white%20frost
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
Deposit of ice crystals in the form of scales, needles, feathers and fans and which forms on objects in the same manner as dew, except that the water vapour of the air is transformed directly into ice crystals. 5, record 2, English, - hoar%20frost
Record number: 2, Textual support number: 1 CONT
Hoarfrost [is] a deposit of interlocking ice crystals formed by direct sublimation on objects, usually those of small diameter freely exposed to the air, such as tree branches, plant stems and leaf edges, wires, and poles. Also, frost may form on the skin of an aircraft when a cold aircraft flies into warm and moist air or when it passes through air that is supersaturated with water vapor. Hoarfrost is formed similarly to the way dew is formed except that the temperature of the frosted object must be below freezing. Frost forms when air with a dew point below freezing is brought to saturation by cooling. In addition to its formation on freely exposed objects (air hoar), hoarfrost also forms inside unheated buildings and vehicles, in caves, in crevasses (crevasse hoar), on snow surfaces (surface hoar), and in air spaces within snow, especially below a snow crust (depth hoar). Hoarfrost is more fluffy and feathery than rime, which in turn is lighter than glaze. Hoarfrost is designated light or heavy (frost) depending upon the amount and uniformity of deposition. 6, record 2, English, - hoar%20frost
Record number: 2, Textual support number: 1 OBS
Hoarfrost [is] due to nocturnal radiation. Hoarfrost forms during still, clear nights, is small in amount, needlelike in texture, the "needles" approximately perpendicular to the objects on which they occur, and most abundant along the edges. 7, record 2, English, - hoar%20frost
Record number: 2, Textual support number: 2 OBS
hoarfrost: sometimes confused with "rime." 7, record 2, English, - hoar%20frost
Record 2, French
Record 2, Domaine(s)
- Phénomènes météorologiques, climatiques et atmosphériques
Record 2, Main entry term, French
- gelée blanche
1, record 2, French, gel%C3%A9e%20blanche
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Couche épaisse de cristaux de glace produite par le gel d'un dépôt de vapeur d'eau. 2, record 2, French, - gel%C3%A9e%20blanche
Record number: 2, Textual support number: 1 CONT
La gelée blanche est un dépôt de glace, d'aspect cristallin, affectant le plus souvent la forme d'écailles, d'aiguilles, de plumes ou d'éventails. Elle se forme d'une manière analogue à la rosée, lorsque la température du point de rosée de l'air est inférieure à 0 °C. 3, record 2, French, - gel%C3%A9e%20blanche
Record number: 2, Textual support number: 2 CONT
Pour deux raisons, une gelée blanche cause moins de dommage à la végétation qu'une gelée noire : 1) elle tend à isoler la plante d'un froid plus intense, 2) elle libère la chaleur latente de fusion en faveur du milieu. 2, record 2, French, - gel%C3%A9e%20blanche
Record number: 2, Textual support number: 3 CONT
On considère qu'il existe trois types de gelées : Les gelées par advections ou gelées noires ou gelées de plein vent. [...] Les gelées blanches ou gelées par rayonnement. Elles se produisent surtout pendant certaines nuits claires de février ou mars et même éventuellement jusqu'au début mai et occasionnent de gros dégâts sur la floraison. [...] Les gelées par évaporation. 4, record 2, French, - gel%C3%A9e%20blanche
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Fenómenos meteorológicos, climáticos y atmosféricos
Record 2, Main entry term, Spanish
- escarcha
1, record 2, Spanish, escarcha
correct, feminine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
- helada blanca 2, record 2, Spanish, helada%20blanca
correct, feminine noun
Record 2, Textual support, Spanish
Record number: 2, Textual support number: 1 DEF
Precipitación atmosférica de gotitas de agua en estado de sobrefusión que, al entrar en contacto con una superficie sólida (plantas, hilos telegráficos, etc.), se congelan bruscamente sobre ella y la cubren de una capa de pequeños cristales de hielo. 3, record 2, Spanish, - escarcha
Record number: 2, Textual support number: 1 OBS
escarcha; helada blanca: términos utilizados por la Asociación Mundial de la Carretera. 4, record 2, Spanish, - escarcha
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