A150-0003
Anthropogenic Secondary Organic Aerosols Contribute Substantially to Air Pollution Mortality
Monday, 14 December 2020
Poster
Doug A Day1, Benjamin Nault2, Duseong Jo3, Brian C McDonald4, Pedro Campuzano-Jost5, Weiwei Hu6, Jason Clay Schroder7, James D Allan8, Donald Ray Blake9, Manjula R Canagaratna10, Hugh Coe11, Matthew Mitchell Coggon12, Peter F DeCarlo13, Glenn S Diskin14, Rachel Dunmore15, Frank M Flocke16, Alan Fried17, Jessica Gilman18, Georgios Gkatzelis19, Jacqueline Hamilton15, Thomas F Hanisco20, P. Hayes21, Daven K Henze22, Alma Hodzic23, James R Hopkins15, Min Hu24, L Gregory Huey25, B Thomas Jobson26, William Kuster27, Alistair C Lewis28, Meng Li4, Jin Liao29, Muhammad Omar Nawaz30, Ilana Pollack31, Jeff Peischl19, Bernhard Rappenglück32, Claire Reeves33, Dirk Richter17, James Roberts34, Thomas B Ryerson35, Jacob Sommers36, James Walega17, Carsten Warneke19, Petter Weibring17, Glenn M Wolfe37, Dominique E Young38, Bin Yuan39, Qiang Zhang40, Joost de Gouw41 and Jose L Jimenez5, (1)CIRES, Boulder, CO, United States, (2)University of Colorado, Boulder, Boulder, CO, United States, (3)University of Colorado at Boulder, Chemistry/CIRES, Boulder, CO, United States, (4)Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO, United States, (5)University of Colorado at Boulder, Cooperative Institute for Research in Environmental Sciences (CIRES) and Department of Chemistry, Boulder, CO, United States, (6)Chinese Academy of Sciences, Guangzhou, China, (7)Colorado Department of Public Health and Environment, Denver, CO, United States, (8)Department of Earth and Environmental Sciences, The University of Manchester, Manchester, United Kingdom, (9)University of California Irvine, Irvine, CA, United States, (10)Aerodyne Research Inc., Billerica, MA, United States, (11)Department of Earth and Environmental Sciences, University of Manchester, Manchester, United Kingdom, (12)California Institute of Technology, Department of Chemical Engineering, Pasadena, CA, United States, (13)Drexel University, Philadelphia, PA, United States, (14)NASA Langley Research Ctr, Hampton, VA, United States, (15)University of York, Wolfson Atmospheric Chemistry Laboratories, Department of Chemistry, York, United Kingdom, (16)NCAR, Boulder, CO, United States, (17)University of Colorado at Boulder, Institute of Arctic and Alpine Research, Boulder, CO, United States, (18)NOAA Earth System Research Laboratory, Chemical Sciences Laboratory, Boulder, CO, United States, (19)CIRES and NOAA ESRL, Chemical Sciences Laboratory, Boulder, CO, United States, (20)NASA GSFC, Greenbelt, MD, United States, (21)Université de Montréal, Department of Chemistry, Montréal, QC, Canada, (22)University of Colorado Boulder, Boulder, CO, United States, (23)National Center for Atmospheric Research, Boulder, CO, United States, (24)Peking University, State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Beijing, China, (25)Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, GA, United States, (26)Washington State University, Pullman, WA, United States, (27)NOAA, Earth System Research Laboratory, Boulder, CO, United States, (28)University of York, Wolfson Atmospheric Chemistry Laboratories, York, United Kingdom, (29)Universities Space Research Association and NASA Goddard Space Flight Center, Greenbelt, MD, United States, (30)University of Colorado Boulder, Boulder, Colorado, United States, (31)Colorado State University, Fort Collins, United States, (32)University of Houston, Department of Earth & Atmospheric Sciences, Houston, TX, United States, (33)National Centre for Atmospheric Science, Leeds, United Kingdom, (34)NOAA ESRL, Chemical Sciences Laboratory, Boulder, CO, United States, (35)NOAA ESRL Chemical Sciences Division, Boulder, CO, United States, (36)Université de Montreal, Department of Chemistry, Montreal, QC, Canada, (37)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (38)University of California Davis, Davis, CA, United States, (39)Jinan University, Institute for Environmental and Climate Research, Guangzhou, China, (40)Tsinghua University, Beijing, China, (41)University of Colorado at Boulder, Department of Chemistry, Boulder, United States
Abstract:
Anthropogenic secondary organic aerosol (ASOA), formed from anthropogenic emissions of organic compounds, constitutes a substantial fraction of the mass of submicron aerosol in populated areas around the world and contributes to poor air quality and premature mortality. However, the precursor sources of ASOA are poorly understood, and there are large uncertainties in the health benefits that might accrue from reducing anthropogenic organic emissions. We show that the production of ASOA in urban areas on three continents is strongly correlated with the anthropogenic reactivity of specific volatile organic compounds. The differences in ASOA production across different cities can be explained by differences in the emissions of aromatics and intermediate- and semi-volatile organic compounds, indicating the importance of controlling these ASOA precursors. With an improved modeling representation of ASOA driven by the observations, we attribute 340,000 PM2.5 premature deaths per year to ASOA, which is over an order of magnitude higher than prior studies. A sensitivity case with more recently proposed model for attributing mortality to PM2.5 (the Global Exposure Mortality Model) results up to 900,000 deaths.
