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ABSORCION NUBES [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2022-12-07

English

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

The absorption of electromagnetic radiation by the water drops and water vapor within a cloud.

OBS

For insolation (incoming solar radiation), clouds absorb rather small fractions, particularly of the shorter wavelengths. Even for depths of clouds of the order of 20,000 ft, measurements suggest absorptions of less than 30 percent, while layers only one or two thousand feet thick may absorb only about 5 percent. However, for long-wave terrestrial radiation, even very thin layers of cloud act as almost complete black-body absorbers.

French

Domaine(s)
  • Physique de l'atmosphère
  • Phénomènes météorologiques, climatiques et atmosphériques
CONT

Il existe encore une diffusion et une absorption simultanées par les nuages, très variables selon leur nature (gouttelettes, cristaux), leur altitude, leur densité, leur nébulosité, leurs dimensions, etc. mais souvent considérées comme neutres et indépendantes des longueurs d'onde (notion de densité optique), sauf pour celles supérieures à 1,2 um environ, qui sont le plus souvent complètement absorbées.

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
  • Fenómenos meteorológicos, climáticos y atmosféricos
Save record 1

Record 2 2007-03-11

English

Subject field(s)
  • Space Physics
  • Remote Sensing
  • Atmospheric Physics
  • Air Pollution
DEF

Reduced transparency of the atmosphere to radiation (especially visible) caused by absorption and scattering by solid or liquid particles other than clouds.

CONT

Changes in atmospheric turbidity. Dust and other foreign particles floating in the atmosphere may have an important influence on the albedo of the atmosphere. Solar radiation is reflected and scattered by these particles and some of it is returned to space without being absorbed by the atmosphere or Earth. These particles enter the atmosphere primarily by human activity, wind erosion of desiccated areas, and volcanic action.

OBS

atmospheric turbidity: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Physique spatiale
  • Télédétection
  • Physique de l'atmosphère
  • Pollution de l'air
DEF

Diminution de la transparence de l'atmosphère, due à l'absorption et à la diffusion du rayonnement par des particules solides ou liquides autres que celles des nuages.

CONT

La diffusion par les aérosols a été notamment étudiée par Mie. Elle dépend de la taille et de la nature des particules [...] Elle est responsable du trouble atmosphérique, qui délave plus ou moins le bleu du ciel.

OBS

Il existe aussi d'autres troubles atmosphériques. Ainsi on appelle aussi «trouble» des particules en suspension dans l'eau.

OBS

trouble atmosphérique : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Campo(s) temático(s)
  • Física espacial
  • Teledetección
  • Física de la atmósfera
  • Contaminación del aire
DEF

Reducción de la transparencia de la atmósfera producida por la absorción y difusión de la radiación(especialmente la visible) por partículas en suspensión dentro de ella, sólidas o líquidas, que no sean las de las nubes.

Key term(s)
  • turbidez
Save record 2

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