Investigating processes influencing simulation of local Arctic wintertime anthropogenic pollution in Fairbanks, Alaska, during ALPACA-2022
<p>Lagrangian tracer simulations are deployed to investigate processes influencing vertical and horizontal dispersion of anthropogenic pollution in Fairbanks, Alaska, during the Alaskan Layered Pollution and Chemical Analysis (ALPACA) 2022 field campaign. Simulated concentrations of carbon mon...
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Copernicus Publications
2025-01-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/25/1063/2025/acp-25-1063-2025.pdf |
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| author | N. Brett N. Brett K. S. Law S. R. Arnold J. G. Fochesatto J.-C. Raut T. Onishi R. Gilliam K. Fahey D. Huff G. Pouliot B. Barret E. Dieudonné R. Pohorsky J. Schmale A. Baccarini A. Baccarini S. Bekki G. Pappaccogli F. Scoto S. Decesari A. Donateo M. Cesler-Maloney W. Simpson P. Medina B. D'Anna B. Temime-Roussel J. Savarino S. Albertin S. Albertin J. Mao B. Alexander A. Moon P. F. DeCarlo V. Selimovic R. Yokelson E. S. Robinson |
| author_facet | N. Brett N. Brett K. S. Law S. R. Arnold J. G. Fochesatto J.-C. Raut T. Onishi R. Gilliam K. Fahey D. Huff G. Pouliot B. Barret E. Dieudonné R. Pohorsky J. Schmale A. Baccarini A. Baccarini S. Bekki G. Pappaccogli F. Scoto S. Decesari A. Donateo M. Cesler-Maloney W. Simpson P. Medina B. D'Anna B. Temime-Roussel J. Savarino S. Albertin S. Albertin J. Mao B. Alexander A. Moon P. F. DeCarlo V. Selimovic R. Yokelson E. S. Robinson |
| author_sort | N. Brett |
| collection | DOAJ |
| description | <p>Lagrangian tracer simulations are deployed to investigate processes influencing vertical and horizontal dispersion of anthropogenic pollution in Fairbanks, Alaska, during the Alaskan Layered Pollution and Chemical Analysis (ALPACA) 2022 field campaign. Simulated concentrations of carbon monoxide (CO), sulfur dioxide (<span class="inline-formula">SO<sub>2</sub></span>), and nitrogen oxides (<span class="inline-formula">NO<sub><i>x</i></sub></span>), including surface and elevated sources, are the highest at the surface under very cold stable conditions. Pollution enhancements above the surface (50–300 m) are mainly attributed to elevated power plant emissions. Both surface and elevated sources contribute to Fairbanks' regional pollution that is transported downwind, primarily to the south-west, and may contribute to wintertime Arctic haze. Inclusion of a novel power plant plume rise treatment that considers the presence of surface and elevated temperature inversion layers leads to improved agreement with observed CO and <span class="inline-formula">NO<sub><i>x</i></sub></span> plumes, with discrepancies attributed to, for example, displacement of plumes by modelled winds. At the surface, model results show that observed CO variability is largely driven by meteorology and, to a lesser extent, by emissions, although simulated tracers are sensitive to modelled vertical dispersion. Modelled underestimation of surface <span class="inline-formula">NO<sub><i>x</i></sub></span> during very cold polluted conditions is considerably improved following the inclusion of substantial increases in diesel vehicle <span class="inline-formula">NO<sub><i>x</i></sub></span> emissions at cold temperatures (e.g. a factor of 6 at <span class="inline-formula">−</span>30 °C). In contrast, overestimation of surface <span class="inline-formula">SO<sub>2</sub></span> is attributed mainly to model deficiencies in vertical dispersion of elevated (5–18 m) space heating emissions. This study highlights the need for improvements to local wintertime Arctic anthropogenic surface and elevated emissions and improved simulation of Arctic stable boundary layers.</p> |
| format | Article |
| id | doaj-art-9b36f022ad8042aa98e980ab417d141f |
| institution | Kabale University |
| issn | 1680-7316 1680-7324 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Copernicus Publications |
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| series | Atmospheric Chemistry and Physics |
| spelling | doaj-art-9b36f022ad8042aa98e980ab417d141f2025-01-28T06:53:14ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242025-01-01251063110410.5194/acp-25-1063-2025Investigating processes influencing simulation of local Arctic wintertime anthropogenic pollution in Fairbanks, Alaska, during ALPACA-2022N. Brett0N. Brett1K. S. Law2S. R. Arnold3J. G. Fochesatto4J.-C. Raut5T. Onishi6R. Gilliam7K. Fahey8D. Huff9G. Pouliot10B. Barret11E. Dieudonné12R. Pohorsky13J. Schmale14A. Baccarini15A. Baccarini16S. Bekki17G. Pappaccogli18F. Scoto19S. Decesari20A. Donateo21M. Cesler-Maloney22W. Simpson23P. Medina24B. D'Anna25B. Temime-Roussel26J. Savarino27S. Albertin28S. Albertin29J. Mao30B. Alexander31A. Moon32P. F. DeCarlo33V. Selimovic34R. Yokelson35E. S. Robinson36Sorbonne Université, UVSQ, CNRS, LATMOS, 75252 Paris, FranceInstitute for Climate and Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, UKSorbonne Université, UVSQ, CNRS, LATMOS, 75252 Paris, FranceInstitute for Climate and Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, UKDepartment of Atmospheric Sciences, College of Natural Science and Mathematics, University of Alaska Fairbanks, Fairbanks, AK 99775, United StatesSorbonne Université, UVSQ, CNRS, LATMOS, 75252 Paris, FranceSorbonne Université, UVSQ, CNRS, LATMOS, 75252 Paris, FranceCenter for Environmental Measurement and Modeling, Office of Research and Development, US EPA, Research Triangle Park, NC 27709, United StatesCenter for Environmental Measurement and Modeling, Office of Research and Development, US EPA, Research Triangle Park, NC 27709, United StatesAlaska Department of Environmental Conservation, P.O. Box 111800, Juneau, AK 99811-1800, United StatesCenter for Environmental Measurement and Modeling, Office of Research and Development, US EPA, Research Triangle Park, NC 27709, United StatesLaboratoire d'Aérologie (LAERO), Université Toulouse III – Paul Sabatier, CNRS, 31400 Toulouse, FranceLaboratoire de Physico-Chimie de l'Atmosphère (LPCA), Université du Littoral Côte d’Opale (ULCO), 59140 Dunkirk, FranceExtreme Environments Research Laboratory, École Polytechnique Fédérale de Lausanne, Sion, 1950, SwitzerlandExtreme Environments Research Laboratory, École Polytechnique Fédérale de Lausanne, Sion, 1950, SwitzerlandExtreme Environments Research Laboratory, École Polytechnique Fédérale de Lausanne, Sion, 1950, SwitzerlandLaboratory of Atmospheric Processes and their Impacts, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, SwitzerlandSorbonne Université, UVSQ, CNRS, LATMOS, 75252 Paris, FranceInstitute of Atmospheric Sciences and Climate (ISAC) of the National Research Council of Italy (CNR), Lecce 73100, ItalyInstitute of Atmospheric Sciences and Climate (ISAC) of the National Research Council of Italy (CNR), Lecce 73100, ItalyInstitute of Atmospheric Sciences and Climate (ISAC) of the National Research Council of Italy (CNR), Bologna 40121, ItalyInstitute of Atmospheric Sciences and Climate (ISAC) of the National Research Council of Italy (CNR), Lecce 73100, ItalyGeophysical Institute and Department of Chemistry and Biochemistry, University of Alaska Fairbanks, Fairbanks, AK 99775, United StatesGeophysical Institute and Department of Chemistry and Biochemistry, University of Alaska Fairbanks, Fairbanks, AK 99775, United StatesLaboratoire d'Aérologie (LAERO), Université Toulouse III – Paul Sabatier, CNRS, 31400 Toulouse, FranceAix Marseille Univ, CNRS, LCE, 13331 Marseille, FranceAix Marseille Univ, CNRS, LCE, 13331 Marseille, FranceIGE, Univ. Grenoble Alpes, CNRS, INRAE, IRD, Grenoble INP, 38000 Grenoble, FranceSorbonne Université, UVSQ, CNRS, LATMOS, 75252 Paris, FranceIGE, Univ. Grenoble Alpes, CNRS, INRAE, IRD, Grenoble INP, 38000 Grenoble, FranceGeophysical Institute and Department of Chemistry and Biochemistry, University of Alaska Fairbanks, Fairbanks, AK 99775, United StatesDepartment of Atmospheric and Climate Science, University of Washington, Seattle, WA 98195, United StatesDepartment of Atmospheric and Climate Science, University of Washington, Seattle, WA 98195, United StatesDepartment of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD 21218, United StatesDepartment of Chemistry, University of Michigan, Ann Arbor, MI 48109, United StatesDepartment of Chemistry and Biochemistry, University of Montana, Missoula, MT 59812, United StatesDepartment of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD 21218, United States<p>Lagrangian tracer simulations are deployed to investigate processes influencing vertical and horizontal dispersion of anthropogenic pollution in Fairbanks, Alaska, during the Alaskan Layered Pollution and Chemical Analysis (ALPACA) 2022 field campaign. Simulated concentrations of carbon monoxide (CO), sulfur dioxide (<span class="inline-formula">SO<sub>2</sub></span>), and nitrogen oxides (<span class="inline-formula">NO<sub><i>x</i></sub></span>), including surface and elevated sources, are the highest at the surface under very cold stable conditions. Pollution enhancements above the surface (50–300 m) are mainly attributed to elevated power plant emissions. Both surface and elevated sources contribute to Fairbanks' regional pollution that is transported downwind, primarily to the south-west, and may contribute to wintertime Arctic haze. Inclusion of a novel power plant plume rise treatment that considers the presence of surface and elevated temperature inversion layers leads to improved agreement with observed CO and <span class="inline-formula">NO<sub><i>x</i></sub></span> plumes, with discrepancies attributed to, for example, displacement of plumes by modelled winds. At the surface, model results show that observed CO variability is largely driven by meteorology and, to a lesser extent, by emissions, although simulated tracers are sensitive to modelled vertical dispersion. Modelled underestimation of surface <span class="inline-formula">NO<sub><i>x</i></sub></span> during very cold polluted conditions is considerably improved following the inclusion of substantial increases in diesel vehicle <span class="inline-formula">NO<sub><i>x</i></sub></span> emissions at cold temperatures (e.g. a factor of 6 at <span class="inline-formula">−</span>30 °C). In contrast, overestimation of surface <span class="inline-formula">SO<sub>2</sub></span> is attributed mainly to model deficiencies in vertical dispersion of elevated (5–18 m) space heating emissions. This study highlights the need for improvements to local wintertime Arctic anthropogenic surface and elevated emissions and improved simulation of Arctic stable boundary layers.</p>https://acp.copernicus.org/articles/25/1063/2025/acp-25-1063-2025.pdf |
| spellingShingle | N. Brett N. Brett K. S. Law S. R. Arnold J. G. Fochesatto J.-C. Raut T. Onishi R. Gilliam K. Fahey D. Huff G. Pouliot B. Barret E. Dieudonné R. Pohorsky J. Schmale A. Baccarini A. Baccarini S. Bekki G. Pappaccogli F. Scoto S. Decesari A. Donateo M. Cesler-Maloney W. Simpson P. Medina B. D'Anna B. Temime-Roussel J. Savarino S. Albertin S. Albertin J. Mao B. Alexander A. Moon P. F. DeCarlo V. Selimovic R. Yokelson E. S. Robinson Investigating processes influencing simulation of local Arctic wintertime anthropogenic pollution in Fairbanks, Alaska, during ALPACA-2022 Atmospheric Chemistry and Physics |
| title | Investigating processes influencing simulation of local Arctic wintertime anthropogenic pollution in Fairbanks, Alaska, during ALPACA-2022 |
| title_full | Investigating processes influencing simulation of local Arctic wintertime anthropogenic pollution in Fairbanks, Alaska, during ALPACA-2022 |
| title_fullStr | Investigating processes influencing simulation of local Arctic wintertime anthropogenic pollution in Fairbanks, Alaska, during ALPACA-2022 |
| title_full_unstemmed | Investigating processes influencing simulation of local Arctic wintertime anthropogenic pollution in Fairbanks, Alaska, during ALPACA-2022 |
| title_short | Investigating processes influencing simulation of local Arctic wintertime anthropogenic pollution in Fairbanks, Alaska, during ALPACA-2022 |
| title_sort | investigating processes influencing simulation of local arctic wintertime anthropogenic pollution in fairbanks alaska during alpaca 2022 |
| url | https://acp.copernicus.org/articles/25/1063/2025/acp-25-1063-2025.pdf |
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