TERMIUM Plus®

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FROST-POINT TEMPERATURE [2 records]

Record 1 2011-08-26

English

Subject field(s)
  • Metrology and Units of Measure
  • Atmospheric Physics
DEF

Maximum temperature of formation of hoar frost by sublimation of atmospheric moisture on a cooled polished surface.

OBS

Analogous to the dew point, it applies when the moisture in the atmosphere will not condense above 0° Celsius.

OBS

Not to be confused with "freezing point" or "ice point".

Key term(s)
  • hoar frost point
  • hoar-frost point

French

Domaine(s)
  • Unités de mesure et métrologie
  • Physique de l'atmosphère
DEF

Température maximale de formation de gelée blanche par sublimation de l'humidité atmosphérique sur une surface polie refroidie.

OBS

Ne pas confondre avec le «point de givre» ou le «point de glace».

Spanish

Campo(s) temático(s)
  • Metrología y unidades de medida
  • Física de la atmósfera
DEF

En el caso de una superficie brillante enfriada, temperatura máxima a la que se forma escarcha por sublimación del vapor de agua de la atmósfera.

Save record 1

Record 2 2004-09-23

English

Subject field(s)
  • Atmospheric Physics
  • Thermodynamics
DEF

For moist air at pressure p and with mixing ratio r, temperature at which this air, saturated with respect to ice at the given pressure, has a saturation mixing ratio ri equal to the given mixing ratio r.

OBS

thermodynamic temperatures: Definitions of thermodynamic dew-point, frost-point, ice-bulb, and wet-bulb temperatures are identical with those of dew-point, frost-point, ice-bulb temperature, and wet-bulb temperature. The distinction in nomenclature is made in recognition of the fact that the measured values of these elements may differ slightly from the defined values because of instrumental limitations or procedure.

OBS

Tf.

French

Domaine(s)
  • Physique de l'atmosphère
  • Thermodynamique
DEF

Température de l'air humide à la pression p et ayant le rapport de mélange r, à laquelle l'air humide, saturé par rapport à la glace à la pression donnée, a un rapport de mélange de saturation ri égal au rapport de mélange r donné.

OBS

La température thermodynamique est la température théorique du point de gelée; les conditions sur le terrain et les instruments utilisés pour la mesurer font que ces mesures différent légèrement de la température théorique.

OBS

Tf.

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
  • Termodinámica
DEF

Temperatura del aire húmedo, a una presión p y con una razón de mezcla r, cuando se satura, con respecto al hielo, a la presión dada y con una razón de mezcla de saturación ri igual a la razón de mezcla dada r.

OBS

Tf.

Save record 2

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