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atmospheric concentration of greenhouse gases [1 record]

Record 1 1991-06-18

English

Subject field(s)
  • Climate Warming and Ozone Layer
  • Air Pollution
CONT

As a consequence of the long atmospheric lifetimes of GHGs, major reductions in emissions from current levels are required. Even after serious reductions in emissions, atmospheric concentrations of GHGs will fall only very slowly. Because of the heat capacity of the oceans, the climatic response would be delayed by decades more.

OBS

Concentrations are calculated in terms of "bundle" of greenhouse gases, so the plural forms "gases or GHGs" are usual for these terms. The calculation of the atmospheric concentration of a single greenhouse gas could also be possible.

French

Domaine(s)
  • Réchauffement climatique et couche d'ozone
  • Pollution de l'air
DEF

Rapport de mélange, généralement volumique, entre les molécules de gaz à effet de serre et les molécules d'air.

OBS

Les gaz à effet de serre sont des gaz traces. On calcule leur concentration par des rapports de mélanges volumiques : parties par million, par milliard ou, pour les constituants mineurs, par trillion. Cette grandeur sans unité l'avantage de ne pas faire référence aux conditions de température et de pression contrairement aux microgrammes par mètre cube du rapport de mélange massique.

Spanish

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