Journal article
Global Sources of Fine Particulate Matter: Interpretation of PM2.5 Chemical Composition Observed by SPARTAN using a Global Chemical Transport Model
Environmental science & technology, Vol.52(20), pp.11670-11681
10/16/2018
DOI: 10.1021/acs.est.8b01658
PMID: 30215246
Abstract
Exposure to ambient fine particulate matter (PM2.5) is a leading risk factor for the global burden of disease. However, uncertainty remains about PM2.5 sources. We use a global chemical transport model (GEOS-Chem) simulation for 2014, constrained by satellite-based estimates of PM2.5 to interpret globally dispersed PM2.5 mass and composition measurements from the ground-based surface particulate matter network (SPARTAN). Measured site mean PM2.5 composition varies substantially for secondary inorganic aerosols (2.4–19.7 μg/m3), mineral dust (1.9–14.7 μg/m3), residual/organic matter (2.1–40.2 μg/m3), and black carbon (1.0–7.3 μg/m3). Interpretation of these measurements with the GEOS-Chem model yields insight into sources affecting each site. Globally, combustion sectors such as residential energy use (7.9 μg/m3), industry (6.5 μg/m3), and power generation (5.6 μg/m3) are leading sources of outdoor global population-weighted PM2.5 concentrations. Global population-weighted organic mass is driven by the residential energy sector (64%) whereas population-weighted secondary inorganic concentrations arise primarily from industry (33%) and power generation (32%). Simulation-measurement biases for ammonium nitrate and dust identify uncertainty in agricultural and crustal sources. Interpretation of initial PM2.5 mass and composition measurements from SPARTAN with the GEOS-Chem model constrained by satellite-based PM2.5 provides insight into sources and processes that influence the global spatial variation in PM2.5 composition.
Details
- Title: Subtitle
- Global Sources of Fine Particulate Matter: Interpretation of PM2.5 Chemical Composition Observed by SPARTAN using a Global Chemical Transport Model
- Creators
- Crystal L Weagle - Department of Physics and Atmospheric ScienceGraydon Snider - Department of Physics and Atmospheric ScienceChi Li - Department of Physics and Atmospheric ScienceAaron van Donkelaar - Department of Physics and Atmospheric ScienceSajeev Philip - NASA Ames Research CenterPaul Bissonnette - Department of Physics and Atmospheric ScienceJaqueline Burke - Department of Physics and Atmospheric ScienceJohn Jackson - Department of Physics and Atmospheric ScienceRobyn Latimer - Department of Physics and Atmospheric ScienceEmily Stone - Department of Physics and Atmospheric ScienceIhab Abboud - Environment and Climate Change CanadaClement Akoshile - Department of PhysicsNguyen Xuan Anh - Institute of GeophysicsJeffrey Robert Brook - University of TorontoAaron CohenJinlu Dong - Department of Earth System ScienceMark D Gibson - Department of Civil and Resource EngineeringDerek GriffithKebin B He - Department of Earth System ScienceBrent N Holben - Earth Science DivisionRalph Kahn - Earth Science DivisionChristoph A Keller - NASA Goddard Space Flight CenterJong Sung Kim - Department of Community Health and EpidemiologyNofel Lagrosas - Manila ObservatoryPuji Lestari - Faculty of Civil and Environmental EngineeringYeo Lik Khian - Center for Global Change ScienceYang Liu - Emory UniversityEloise A Marais - University of BirminghamJ. Vanderlei Martins - University of MarylandAmit Misra - Center for Environmental Science and EngineeringUlfi Muliane - Faculty of Civil and Environmental EngineeringRizki Pratiwi - Faculty of Civil and Environmental EngineeringEduardo J Quel - UNIDEF (CITEDEF-CONICET) Juan B. de la Salle 4397 − Villa MartelliAbdus Salam - Department of ChemistryLior Segev - Department of Earth and Planetary SciencesSachchida N Tripathi - Center for Environmental Science and EngineeringChien Wang - Center for Global Change ScienceQiang Zhang - Department of Earth System ScienceMichael Brauer - School of Population and Public HealthYinon Rudich - Department of Earth and Planetary SciencesRandall V Martin - Harvard-Smithsonian Center for Astrophysics
- Resource Type
- Journal article
- Publication Details
- Environmental science & technology, Vol.52(20), pp.11670-11681
- Publisher
- American Chemical Society
- DOI
- 10.1021/acs.est.8b01658
- PMID
- 30215246
- ISSN
- 0013-936X
- eISSN
- 1520-5851
- Grant note
- DOI: 10.13039/501100003977, name: Israel Science Foundation, award: 236/16; DOI: 10.13039/501100000087, name: Dalhousie University; DOI: 10.13039/501100001409, name: Department of Science and Technology, Ministry of Science and Technology, award: DST/INT/UK/P-144/2016; DOI: 10.13039/501100000732, name: UK-India Education and Research Initiative, award: DST/INT/UK/P-144/2016; DOI: 10.13039/501100000038, name: Government of Canada; name: Environmental Health Fund
- Language
- English
- Date published
- 10/16/2018
- Academic Unit
- Occupational and Environmental Health
- Record Identifier
- 9984214939602771
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