Concept information
Terme préférentiel
global dimming
Définition
- The reduction in the amount of global direct irradiance at the Earth's surface that has been observed since systematic measurements began in the 1950s. The effect varies by location, but worldwide it has been estimated to be of the order of a 4–20% reduction. However, after discounting an anomaly caused by the eruption of Mount Pinatubo in 1991, a very slight reversal in the overall trend has been observed. Global dimming is thought to have been caused by an increase in particulates or aerosols, such as sulfate aerosols in the atmosphere due to human action. It has interfered with the hydrological cycle by reducing evaporation and may have reduced rainfall in some areas. (Source: Wikipedia)
Concept générique
Synonyme(s)
- solar dimming
- solar downwelling
Traductions
-
français
-
assombrissement du ciel
-
assombrissement du soleil
-
obscurcissement planétaire
URI
http://data.loterre.fr/ark:/67375/CHC-RJBT6J8B-W
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