Trends in simulated chemical composition of global and regional population-weighted fine particulate matter over the recent 25 years

Chi Li1, Randall Martin2, Aaron van Donkelaar3, Brian Boys2, Melanie Sarah Hammer4, Junwei Xu2, Eloise Ann Marais5, Adam Reff6, Madeleine Strum6, David A Ridley7, Monica Crippa8 and Qiang Zhang9, (1)University of California, Berkeley, Chemistry, Berkeley, United States, (2)Dalhousie University, Department of Physics and Atmospheric Science, Halifax, NS, Canada, (3)Dalhousie University, Dept Physics & Atmospheric Science, Halifax, NS, Canada, (4)Dalhousie University, Physics and Atmospheric Science, Halifax, NS, Canada, (5)University of Birmingham, School of Geography, Earth and Environmental Sciences, Birmingham, United Kingdom, (6)Environmental Protection Agency Research Triangle Park, Research Triangle Park, NC, United States, (7)MIT, Cambridge, MA, United States, (8)European Commission, Joint Research Centre (JRC), Directorate for Energy, Transport and Climate, Air and Climate Unit, Ispra, Italy, (9)Department of Earth System Science,Tsinghua University, Beijing, China