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DUREE ASTRONOMIQUE ENSOLEILLEMENT [1 record]

Record 1 2001-06-08

English

Subject field(s)
  • Meteorology
DEF

Sum of the time intervals within a given time period during which the sun is above an even, unobscured horizon.

OBS

This is equivalent to the period during which the solar elevation is greater than 0. The sun is actually hidden only when the solar altitude is below about -0.84 degrees due to the apparent radius of the sun (0.27 degrees) and atmospheric refraction.

French

Domaine(s)
  • Météorologie
DEF

[...] durée pendant laquelle le soleil reste au-dessus de l’horizon astronomique, c’est-à-dire la durée qui s’écoule depuis le lever jusqu’au coucher réels du centre du soleil.

Spanish

Campo(s) temático(s)
  • Meteorología
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