Assessing the Influence of Secondary Organic versus Primary Carbonaceous Aerosols on Long-Range Atmospheric Polycyclic Aromatic Hydrocarbon Transport
We use the chemical transport model GEOS-Chem to evaluate the hypothesis that atmospheric polycyclic aromatic hydrocarbons (PAHs) are trapped in secondary organic aerosol (SOA) as it forms. We test the ability of three different partitioning configurations within the model to reproduce observed tota...
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ftmit:oai:dspace.mit.edu:1721.1/94639 2023-06-11T04:09:17+02:00 Assessing the Influence of Secondary Organic versus Primary Carbonaceous Aerosols on Long-Range Atmospheric Polycyclic Aromatic Hydrocarbon Transport Pierce, J. R. Friedman, Carey Selin, Noelle Eckley Massachusetts Institute of Technology. Center for Global Change Science Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Massachusetts Institute of Technology. Engineering Systems Division Selin, Noelle Eckley Friedman, Carey 2014-02 application/pdf http://hdl.handle.net/1721.1/94639 en_US eng American Chemical Society (ACS) http://dx.doi.org/10.1021/es405219r Environmental Science and Technology 0013-936X 1520-5851 http://hdl.handle.net/1721.1/94639 Friedman, C. L., J. R. Pierce, and N. E. Selin. “Assessing the Influence of Secondary Organic Versus Primary Carbonaceous Aerosols on Long-Range Atmospheric Polycyclic Aromatic Hydrocarbon Transport.” Environ. Sci. Technol. 48, no. 6 (March 18, 2014): 3293–3302. orcid:0000-0002-6396-5622 Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Prof. Selin via Angie Locknar Article http://purl.org/eprint/type/JournalArticle 2014 ftmit https://doi.org/10.1021/es405219r 2023-05-29T08:29:42Z We use the chemical transport model GEOS-Chem to evaluate the hypothesis that atmospheric polycyclic aromatic hydrocarbons (PAHs) are trapped in secondary organic aerosol (SOA) as it forms. We test the ability of three different partitioning configurations within the model to reproduce observed total concentrations in the midlatitudes and the Arctic as well as midlatitude gas–particle phase distributions. The configurations tested are (1) the GEOS-Chem default configuration, which uses instantaneous equilibrium partitioning to divide PAHs among the gas phase, a primary organic matter (OM) phase (absorptive), and a black carbon (BC) phase (adsorptive), (2) an SOA configuration in which PAHs are trapped in SOA when emitted and slowly evaporate from SOA thereafter, and (3) a configuration in which PAHs are trapped in primary OM/BC upon emission and subsequently slowly evaporate. We also test the influence of changing the fraction of PAHs available for particle-phase oxidation. Trapping PAHs in SOA particles upon formation and protecting against particle-phase oxidation (2) better simulates observed remote concentrations compared to our default configuration (1). However, simulating adsorptive partitioning to BC is required to reproduce the magnitude and seasonal pattern of gas–particle phase distributions. Thus, the last configuration (3) results in the best agreement between observed and simulated concentration/phase distribution data. The importance of BC rather than SOA to PAH transport is consistent with strong observational evidence that PAHs and BC are coemitted. Massachusetts Institute of Technology. Technology and Policy Program (Leading Technology and Policy Initiative) National Science Foundation (U.S.). Arctic Natural Sciences Program (Grant 1203526) National Science Foundation (U.S.). Atmospheric Chemistry Program (Grant 1053658) Article in Journal/Newspaper Arctic black carbon DSpace@MIT (Massachusetts Institute of Technology) Arctic Environmental Science & Technology 48 6 3293 3302 |
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Open Polar |
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DSpace@MIT (Massachusetts Institute of Technology) |
op_collection_id |
ftmit |
language |
English |
description |
We use the chemical transport model GEOS-Chem to evaluate the hypothesis that atmospheric polycyclic aromatic hydrocarbons (PAHs) are trapped in secondary organic aerosol (SOA) as it forms. We test the ability of three different partitioning configurations within the model to reproduce observed total concentrations in the midlatitudes and the Arctic as well as midlatitude gas–particle phase distributions. The configurations tested are (1) the GEOS-Chem default configuration, which uses instantaneous equilibrium partitioning to divide PAHs among the gas phase, a primary organic matter (OM) phase (absorptive), and a black carbon (BC) phase (adsorptive), (2) an SOA configuration in which PAHs are trapped in SOA when emitted and slowly evaporate from SOA thereafter, and (3) a configuration in which PAHs are trapped in primary OM/BC upon emission and subsequently slowly evaporate. We also test the influence of changing the fraction of PAHs available for particle-phase oxidation. Trapping PAHs in SOA particles upon formation and protecting against particle-phase oxidation (2) better simulates observed remote concentrations compared to our default configuration (1). However, simulating adsorptive partitioning to BC is required to reproduce the magnitude and seasonal pattern of gas–particle phase distributions. Thus, the last configuration (3) results in the best agreement between observed and simulated concentration/phase distribution data. The importance of BC rather than SOA to PAH transport is consistent with strong observational evidence that PAHs and BC are coemitted. Massachusetts Institute of Technology. Technology and Policy Program (Leading Technology and Policy Initiative) National Science Foundation (U.S.). Arctic Natural Sciences Program (Grant 1203526) National Science Foundation (U.S.). Atmospheric Chemistry Program (Grant 1053658) |
author2 |
Massachusetts Institute of Technology. Center for Global Change Science Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Massachusetts Institute of Technology. Engineering Systems Division Selin, Noelle Eckley Friedman, Carey |
format |
Article in Journal/Newspaper |
author |
Pierce, J. R. Friedman, Carey Selin, Noelle Eckley |
spellingShingle |
Pierce, J. R. Friedman, Carey Selin, Noelle Eckley Assessing the Influence of Secondary Organic versus Primary Carbonaceous Aerosols on Long-Range Atmospheric Polycyclic Aromatic Hydrocarbon Transport |
author_facet |
Pierce, J. R. Friedman, Carey Selin, Noelle Eckley |
author_sort |
Pierce, J. R. |
title |
Assessing the Influence of Secondary Organic versus Primary Carbonaceous Aerosols on Long-Range Atmospheric Polycyclic Aromatic Hydrocarbon Transport |
title_short |
Assessing the Influence of Secondary Organic versus Primary Carbonaceous Aerosols on Long-Range Atmospheric Polycyclic Aromatic Hydrocarbon Transport |
title_full |
Assessing the Influence of Secondary Organic versus Primary Carbonaceous Aerosols on Long-Range Atmospheric Polycyclic Aromatic Hydrocarbon Transport |
title_fullStr |
Assessing the Influence of Secondary Organic versus Primary Carbonaceous Aerosols on Long-Range Atmospheric Polycyclic Aromatic Hydrocarbon Transport |
title_full_unstemmed |
Assessing the Influence of Secondary Organic versus Primary Carbonaceous Aerosols on Long-Range Atmospheric Polycyclic Aromatic Hydrocarbon Transport |
title_sort |
assessing the influence of secondary organic versus primary carbonaceous aerosols on long-range atmospheric polycyclic aromatic hydrocarbon transport |
publisher |
American Chemical Society (ACS) |
publishDate |
2014 |
url |
http://hdl.handle.net/1721.1/94639 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic black carbon |
genre_facet |
Arctic black carbon |
op_source |
Prof. Selin via Angie Locknar |
op_relation |
http://dx.doi.org/10.1021/es405219r Environmental Science and Technology 0013-936X 1520-5851 http://hdl.handle.net/1721.1/94639 Friedman, C. L., J. R. Pierce, and N. E. Selin. “Assessing the Influence of Secondary Organic Versus Primary Carbonaceous Aerosols on Long-Range Atmospheric Polycyclic Aromatic Hydrocarbon Transport.” Environ. Sci. Technol. 48, no. 6 (March 18, 2014): 3293–3302. orcid:0000-0002-6396-5622 |
op_rights |
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. |
op_doi |
https://doi.org/10.1021/es405219r |
container_title |
Environmental Science & Technology |
container_volume |
48 |
container_issue |
6 |
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3293 |
op_container_end_page |
3302 |
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1768383070260428800 |