Dataset Description
Population-weighted ozone (O3) concentration by country (1990–2015) via State of Global Air.
Data is gathered based on a combination of air quality observations from satellites combined with information from global chemical transport models, and available ground measurements. A global chemical transport model was used to calculate a seasonal (summer, when temperatures are highest) average concentration. Variation in the timing of the ozone (summer) season in different parts of the world is accounted for in these datasets. Global exposure to PM2.5 is then systematically estimated based on blocks or grid cells covering 0.1° x 0.1° of longitude and latitude (approximately 11 km x 11 km at the equator).
Taking into account the population in each block within a country, this data is then aggregated as estimated exposure concentrations to national-level population-weighted averages for a given year.
