Articles | Volume 25, issue 2
https://doi.org/10.5194/acp-25-1063-2025
https://doi.org/10.5194/acp-25-1063-2025
Research article
 | 
28 Jan 2025
Research article |  | 28 Jan 2025

Investigating processes influencing simulation of local Arctic wintertime anthropogenic pollution in Fairbanks, Alaska, during ALPACA-2022

Natalie Brett, Kathy S. Law, Steve R. Arnold, Javier G. Fochesatto, Jean-Christophe Raut, Tatsuo Onishi, Robert Gilliam, Kathleen Fahey, Deanna Huff, George Pouliot, Brice Barret, Elsa Dieudonné, Roman Pohorsky, Julia Schmale, Andrea Baccarini, Slimane Bekki, Gianluca Pappaccogli, Federico Scoto, Stefano Decesari, Antonio Donateo, Meeta Cesler-Maloney, William Simpson, Patrice Medina, Barbara D'Anna, Brice Temime-Roussel, Joel Savarino, Sarah Albertin, Jingqiu Mao, Becky Alexander, Allison Moon, Peter F. DeCarlo, Vanessa Selimovic, Robert Yokelson, and Ellis S. Robinson

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This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
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In situ vertical observations of the layered structure of air pollution in a continental high latitude urban boundary layer during winter
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Vertical profiles and surface distributions of trace gases (CO, O3, NO, NO2) in the Arctic wintertime boundary layer using low-cost sensors during ALPACA-2022
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Subject: Gases | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
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Cited articles

ADEC: Amendments to: State Air Quality Control Plan, Vol. III: Appendix III.D.7.07, Alaska Department of Environmental Conservation (ADEC), 2019. a, b
ADEC: Amendments to: State Air Quality Control Plan, Vol. II: III.D.7.07 Control Strategies, Alaska Department of Environmental Conservation (ADEC), https://dec.alaska.gov/ (last access: 3 December 2024), 2020. a, b, c
ADEC: Technical Analysis Modeling Report for Phase 1, 2, and 3, Alaska Department of Environmental Conservation (ADEC) – Division of Air Quality, https://dec.alaska.gov/ (last access: 3 December 2024), 2023. a
Akingunola, A., Makar, P. A., Zhang, J., Darlington, A., Li, S.-M., Gordon, M., Moran, M. D., and Zheng, Q.: A chemical transport model study of plume-rise and particle size distribution for the Athabasca oil sands, Atmos. Chem. Phys., 18, 8667–8688, https://doi.org/10.5194/acp-18-8667-2018, 2018. a, b, c, d
Alexander, B., Allman, D., Amos, H., Fairlie, T., Dachs, J., Hegg, D. A., and Sletten, R. S.: Isotopic constraints on the formation pathways of sulfate aerosol in the marine boundary layer of the subtropical northeast Atlantic Ocean, J. Geophys. Res.-Atmos., 117, D06304, https://doi.org/10.1029/2011JD016773, 2012. a
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Processes influencing dispersion of local anthropogenic pollution in Arctic wintertime are investigated with Lagrangian dispersion modelling. Simulated power plant plume rise that considers temperature inversion layers improves results compared to observations (interior Alaska). Modelled surface concentrations are improved by representation of vertical mixing and emission estimates. Large increases in diesel vehicle emissions at temperatures reaching −35°C are required to reproduce observed NOx.
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