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Title: 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 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 4more » 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.« less
Authors:
 [1] ; ORCiD logo [1] ;  [1] ;  [2] ;  [3] ;  [4] ; ORCiD logo [3] ;  [5] ;  [5] ; ORCiD logo [6]
  1. Univ. of Michigan, Ann Arbor, MI (United States). Department of Chemistry
  2. Baylor Univ., Waco, TX (United States). The Institute of Ecological, Earth, and Environmental Sciences
  3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
  4. Baylor Univ., Waco, TX (United States). The Institute of Ecological, Earth, and Environmental Sciences and Department of Environmental Science
  5. Leibniz Institute for Tropospheric Research, Leipzig (Germany)
  6. Univ. of Michigan, Ann Arbor, MI (United States). Department of Chemistry and Department of Earth and Environmental Sciences
Publication Date:
Report Number(s):
PNNL-SA-126287
Journal ID: ISSN 1680-7324; 49331; KP1704020
Grant/Contract Number:
AC05-76RL01830
Type:
Accepted Manuscript
Journal Name:
Atmospheric Chemistry and Physics (Online)
Additional Journal Information:
Journal Name: Atmospheric Chemistry and Physics (Online); Journal Volume: 17; Journal Issue: 17; Journal ID: ISSN 1680-7324
Publisher:
European Geosciences Union
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; Environmental Molecular Sciences Laboratory
OSTI Identifier:
1406691

Gunsch, Matthew J., Kirpes, Rachel M., Kolesar, Katheryn R., Barrett, Tate E., China, Swarup, Sheesley, Rebecca J., Laskin, Alexander, Wiedensohler, Alfred, Tuch, Thomas, and Pratt, Kerri A.. Contributions of transported Prudhoe Bay oil field emissions to the aerosol population in Utqiagvik, Alaska. United States: N. p., Web. doi:10.5194/acp-17-10879-2017.
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. United States. doi:10.5194/acp-17-10879-2017.
Gunsch, Matthew J., Kirpes, Rachel M., Kolesar, Katheryn R., Barrett, Tate E., China, Swarup, Sheesley, Rebecca J., Laskin, Alexander, Wiedensohler, Alfred, Tuch, Thomas, and Pratt, Kerri A.. 2017. "Contributions of transported Prudhoe Bay oil field emissions to the aerosol population in Utqiagvik, Alaska". United States. doi:10.5194/acp-17-10879-2017. https://www.osti.gov/servlets/purl/1406691.
@article{osti_1406691,
title = {Contributions of transported Prudhoe Bay oil field emissions to the aerosol population in Utqiagvik, Alaska},
author = {Gunsch, Matthew J. and Kirpes, Rachel M. and Kolesar, Katheryn R. and Barrett, Tate E. and China, Swarup and Sheesley, Rebecca J. and Laskin, Alexander and Wiedensohler, Alfred and Tuch, Thomas and Pratt, Kerri A.},
abstractNote = {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.},
doi = {10.5194/acp-17-10879-2017},
journal = {Atmospheric Chemistry and Physics (Online)},
number = 17,
volume = 17,
place = {United States},
year = {2017},
month = {9}
}