Long-Term Assessment of Air Quality and Identification of Aerosol Sources at Setúbal, Portugal.

Overall, it is possible to observe a clear trend of better air quality indexes along the years, with the index “Good” increasing from 150 days per year in 2004 to more than 250 days per year in 2012.

also in 19,460 other papers

Overall, the air quality has been improving over the years with a decreasing trend of air pollutant concentration, with the exception of O 3 .

also in 47,180 other papers