Contributions of transported Prudhoe Bay oil field emissions to the aerosol population in Utqiagvik, Alaska
Loss of sea ice is opening the Arctic to increasing development involving oil and gas extraction and shipping. Given the significant impacts of absorbing aerosol and secondary aerosol precursors emitted within the rapidly warming Arctic region, it is necessary to characterize local anthropogenic aer...
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ftosti:oai:osti.gov:1406691 2023-07-30T04:01:05+02:00 Contributions of transported Prudhoe Bay oil field emissions to the aerosol population in Utqiagvik, Alaska Gunsch, Matthew J. Kirpes, Rachel M. Kolesar, Katheryn R. Barrett, Tate E. China, Swarup Sheesley, Rebecca J. Laskin, Alexander Wiedensohler, Alfred Tuch, Thomas Pratt, Kerri A. 2023-06-27 application/pdf http://www.osti.gov/servlets/purl/1406691 https://www.osti.gov/biblio/1406691 https://doi.org/10.5194/acp-17-10879-2017 unknown http://www.osti.gov/servlets/purl/1406691 https://www.osti.gov/biblio/1406691 https://doi.org/10.5194/acp-17-10879-2017 doi:10.5194/acp-17-10879-2017 54 ENVIRONMENTAL SCIENCES 2023 ftosti https://doi.org/10.5194/acp-17-10879-2017 2023-07-11T09:22:35Z Loss of sea ice is opening the Arctic to increasing development involving oil and gas extraction and shipping. Given the significant impacts of absorbing aerosol and secondary aerosol precursors emitted within the rapidly warming Arctic region, it is necessary to characterize local anthropogenic aerosol sources and compare to natural conditions. From August to September 2015 in Utqiagvik (Barrow), AK, the chemical composition of individual atmospheric particles was measured by computer-controlled scanning electron microscopy with energy-dispersive X-ray spectroscopy (0.13–4 µm projected area diameter) and real-time single-particle mass spectrometry (0.2–1.5 µm vacuum aerodynamic diameter). During periods influenced by the Arctic Ocean (70 % of the study), our results show that fresh sea spray aerosol contributed ~20 %, by number, of particles between 0.13 and 0.4 µm, 40–70 % between 0.4 and 1 µm, and 80–100 % between 1 and 4 µm particles. In contrast, for periods influenced by emissions from Prudhoe Bay (10 % of the study), the third largest oil field in North America, there was a strong influence from submicron (0.13–1 µm) combustion-derived particles (20–50 % organic carbon, by number; 5–10% soot by number). While sea spray aerosol still comprised a large fraction of particles (90 % by number from 1 to 4 µm) detected under Prudhoe Bay influence, these particles were internally mixed with sulfate and nitrate indicative of aging processes during transport. In addition, the overall mode of the particle size number distribution shifted from 76 nm during Arctic Ocean influence to 27 nm during Prudhoe Bay influence, with particle concentrations increasing from 130 to 920 cm -3 due to transported particle emissions from the oil fields. The increased contributions of carbonaceous combustion products and partially aged sea spray aerosol should be considered in future Arctic atmospheric composition and climate simulations. Other/Unknown Material Arctic Arctic Ocean Barrow Prudhoe Bay Sea ice Alaska SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic Arctic Ocean Atmospheric Chemistry and Physics 17 17 10879 10892 |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
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54 ENVIRONMENTAL SCIENCES Gunsch, Matthew J. Kirpes, Rachel M. Kolesar, Katheryn R. Barrett, Tate E. China, Swarup Sheesley, Rebecca J. Laskin, Alexander Wiedensohler, Alfred Tuch, Thomas Pratt, Kerri A. Contributions of transported Prudhoe Bay oil field emissions to the aerosol population in Utqiagvik, Alaska |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
Loss of sea ice is opening the Arctic to increasing development involving oil and gas extraction and shipping. Given the significant impacts of absorbing aerosol and secondary aerosol precursors emitted within the rapidly warming Arctic region, it is necessary to characterize local anthropogenic aerosol sources and compare to natural conditions. From August to September 2015 in Utqiagvik (Barrow), AK, the chemical composition of individual atmospheric particles was measured by computer-controlled scanning electron microscopy with energy-dispersive X-ray spectroscopy (0.13–4 µm projected area diameter) and real-time single-particle mass spectrometry (0.2–1.5 µm vacuum aerodynamic diameter). During periods influenced by the Arctic Ocean (70 % of the study), our results show that fresh sea spray aerosol contributed ~20 %, by number, of particles between 0.13 and 0.4 µm, 40–70 % between 0.4 and 1 µm, and 80–100 % between 1 and 4 µm particles. In contrast, for periods influenced by emissions from Prudhoe Bay (10 % of the study), the third largest oil field in North America, there was a strong influence from submicron (0.13–1 µm) combustion-derived particles (20–50 % organic carbon, by number; 5–10% soot by number). While sea spray aerosol still comprised a large fraction of particles (90 % by number from 1 to 4 µm) detected under Prudhoe Bay influence, these particles were internally mixed with sulfate and nitrate indicative of aging processes during transport. In addition, the overall mode of the particle size number distribution shifted from 76 nm during Arctic Ocean influence to 27 nm during Prudhoe Bay influence, with particle concentrations increasing from 130 to 920 cm -3 due to transported particle emissions from the oil fields. The increased contributions of carbonaceous combustion products and partially aged sea spray aerosol should be considered in future Arctic atmospheric composition and climate simulations. |
author |
Gunsch, Matthew J. Kirpes, Rachel M. Kolesar, Katheryn R. Barrett, Tate E. China, Swarup Sheesley, Rebecca J. Laskin, Alexander Wiedensohler, Alfred Tuch, Thomas Pratt, Kerri A. |
author_facet |
Gunsch, Matthew J. Kirpes, Rachel M. Kolesar, Katheryn R. Barrett, Tate E. China, Swarup Sheesley, Rebecca J. Laskin, Alexander Wiedensohler, Alfred Tuch, Thomas Pratt, Kerri A. |
author_sort |
Gunsch, Matthew J. |
title |
Contributions of transported Prudhoe Bay oil field emissions to the aerosol population in Utqiagvik, Alaska |
title_short |
Contributions of transported Prudhoe Bay oil field emissions to the aerosol population in Utqiagvik, Alaska |
title_full |
Contributions of transported Prudhoe Bay oil field emissions to the aerosol population in Utqiagvik, Alaska |
title_fullStr |
Contributions of transported Prudhoe Bay oil field emissions to the aerosol population in Utqiagvik, Alaska |
title_full_unstemmed |
Contributions of transported Prudhoe Bay oil field emissions to the aerosol population in Utqiagvik, Alaska |
title_sort |
contributions of transported prudhoe bay oil field emissions to the aerosol population in utqiagvik, alaska |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1406691 https://www.osti.gov/biblio/1406691 https://doi.org/10.5194/acp-17-10879-2017 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Barrow Prudhoe Bay Sea ice Alaska |
genre_facet |
Arctic Arctic Ocean Barrow Prudhoe Bay Sea ice Alaska |
op_relation |
http://www.osti.gov/servlets/purl/1406691 https://www.osti.gov/biblio/1406691 https://doi.org/10.5194/acp-17-10879-2017 doi:10.5194/acp-17-10879-2017 |
op_doi |
https://doi.org/10.5194/acp-17-10879-2017 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
17 |
container_issue |
17 |
container_start_page |
10879 |
op_container_end_page |
10892 |
_version_ |
1772811821068058624 |