This implies that before 2050 global emissions of CO2 must be reduced to below 50% of the 1990 level (they are currently 15% above that level), and that average emissions in developed countries must be reduced by at least 80% of the 1990 level.
Ce qui signifie qu’avant 2050, les émissions de dioxyde de carbone devront globalement diminuer d’au moins 50% de leurs niveaux de 1990 (ils sont aujourd’hui à 15% au-dessus) – les émissions moyennes des pays développés devront, quant à elles, diminuer de 80% minimum.