Reversal of trends in global fine particulate matter air pollution.

ABSTRACT: Ambient fine particulate matter (PM_2.5) is the world's leading environmental health risk factor. Quantification is needed of regional contributions to changes in global PM_2.5 exposure. Here we interpret satellite-derived PM_2.5 estimates over 1998-2019 and find a reversal of previous growth in global PM_2.5 air pollution, which is quantitatively attributed to contributions from 13 regions. Global population-weighted (PW) PM_2.5 exposure, related to both pollution levels and population size, increased from 1998 (28.3 μg/m³) to a peak in 2011 (38.9 μg/m³) and decreased steadily afterwards (34.7 μg/m³ in 2019). Post-2011 change was related to exposure reduction in China and slowed exposure growth in other reg

SUBMITTER: Li C 

PROVIDER: S-EPMC10475088 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature