TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

ALBEDO PLANETARIO [2 records]

Record 1 2011-05-16

English

Subject field(s)
  • Atmospheric Physics
  • The Earth (Astronomy)
DEF

Ratio of the radiation (radiant or luminous energy) reflected by the Earth, including its atmosphere, to the incident solar radiation.

CONT

The albedo of the planet Earth is about 0.4, which means four-tenths of the sun's radiation that strikes the planet is reflected back into space.

OBS

The Earth's albedo varies mainly through varying cloudiness, snow, ice, leaf area, and land-cover changes.

French

Domaine(s)
  • Physique de l'atmosphère
  • Terre (Astronomie)
DEF

Rapport du rayonnement solaire (énergétique ou lumineux) réfléchi par la Terre, y compris l'atmosphère, au rayonnement solaire incident.

CONT

L'albédo du système Terre-Atmosphère est la fraction de l'énergie solaire qui est réfléchie vers l'espace. Sa valeur est comprise entre 0 et 1. Plus une surface est réfléchissante, plus son albédo est élevé. Les éléments qui contribuent le plus à l'albédo de la Terre sont : les nuages, les surfaces de neige et de glace et les aérosols. Par exemple, l'albédo de la neige fraîche est de 0,87, ce qui signifie que 87 % de l'énergie solaire est réfléchie par ce type de neige.

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
  • Tierra (Astronomía)
DEF

Cociente entre el valor de la radiación (energía radiante o luminosa) reflejada por la Tierra y su atmósfera y la radiación solar incidente sobre ella.

Save record 1

Record 2 2010-12-21

English

Subject field(s)
  • Atmospheric Physics
  • Astrophysics and Cosmography
DEF

... the fraction of the total incident solar radiation -the radiation at all wavelengths- that is reflected or scattered by an object in all directions ...

CONT

The Bond albedo is the total radiation reflected from an object compared to the total incident radiation from the Sun. The Bond albedo for the Earth is given as 0.29 by de Pater and Lissauer, compared to their value of 0.37 for the geometrical albedo.

OBS

Bond albedo: named for the American astronomer George Bond (1826-1865) ...

OBS

Bond albedo ... is an important measure of a planetary body's energy balance.

OBS

albedo: A measure of the reflecting power of a nonluminous object, such as a planet, moon, or asteroid. Albedo (from the Latin "albus" for "white") is expressed as the fraction of light and/or other radiation falling on an object [or a surface] that is reflected or scattered back into space; its value ranges from 0, for a perfectly black surface, to 1, for a totally reflective surface.

OBS

Albedo is differentiated into two types, normal albedo and bond albedo.

French

Domaine(s)
  • Physique de l'atmosphère
  • Astrophysique et cosmographie
DEF

[...] rapport entre l'énergie radiante qui tombe sur une planète [un corps], et la totalité de l'énergie radiante réfléchie par la planète [ce corps].

CONT

Albédo de Bond (ou global, ou planétaire) - il caractérise la proportion de flux d'énergie réfléchie dans toutes les directions par un corps supposé sphérique et éclairé par un flux de rayons parallèles.

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
  • Astrofísica y cosmografía
DEF

[...] fracción entre toda la energía reflejada por un cuerpo y la energía incidente.

Save record 2

Copyright notice for the TERMIUM Plus® data bank

© Public Services and Procurement Canada, 2024
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau

Features

Language Portal of Canada

Access a collection of Canadian resources on all aspects of English and French, including quizzes.

Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.

Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.

Date Modified: