The inventories are used to evaluate regulatory policies for air quality improvements and to anticipate future emission scenarios that may occur with economic and population growth. (sciencedaily.com)
As air quality improvements continue to be achieved, so even more warming can be expected. (climate-resistance.org)
Perhaps the biggest challenge facing authorities is how to maintain the gains they have made on air quality improvement despite the estimated 1,000 new vehicles registered in the city each day. (scientificamerican.com)