4.7 Article

Impact of fuel uses in the formation and prevention of global secondary organic aerosol

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ATMOSPHERIC RESEARCH
卷 291, 期 -, 页码 -

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ELSEVIER SCIENCE INC
DOI: 10.1016/j.atmosres.2023.106798

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Secondary organic aerosols; Solid biofuel; Coal; Oil; Natural gas

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This study estimates the contributions of different fuel sectors to the formation of anthropogenic and biogenic Secondary Organic Aerosols (a-SOA and b-SOA) globally. The results show that liquid oil and natural gas emissions, process and non-combustion emissions, and solid biofuels are the dominant contributors to SOA formation at the global scale. Eliminating emissions from the combustion of fossil fuels can effectively prevent over 54% of SOA formations.
This study estimates global anthropogenic and biogenic Secondary Organic Aerosols (a-SOA and b-SOA) and the contributions of four fuel sectors (Solid Biofuel, Coal, Liquid Oil and Natural Gas, and Process and non -combustion emissions (in metal production, chemical industry, manure management)) to their formation. The global landscape was divided into eleven domains (North America; South America; Europe; North Africa and the Middle East; Equatorial Africa; South of Africa; Russia and Central Asia; Eastern Asia; South Asia; Southeast Asia, and Australia). WRF-Chem model coupled with emission inventories as model inputs, atmospheric reactions from the RACM gas-phase mechanism, and the secondary organic aerosol module (SORGAM) were employed for estimating a-SOA and b-SOA for the year 2018. At the global scale, SOA contribution was dominated by liquid oil and natural gas emissions (38%), process and non-combustion emissions (24%), and solid biofuels (22%). Over 54% of SOA formations can be effectively prevented by eliminating emissions from the combustion of fossil fuel (liquid oil + natural gas and coal). However, the relative equilibrium between these fuels differed at the domain levels.

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