Articles | Volume 25, issue 6
https://doi.org/10.5194/acp-25-3687-2025
https://doi.org/10.5194/acp-25-3687-2025
Research article
 | 
27 Mar 2025
Research article |  | 27 Mar 2025

In situ vertical observations of the layered structure of air pollution in a continental high-latitude urban boundary layer during winter

Roman Pohorsky, Andrea Baccarini, Natalie Brett, Brice Barret, Slimane Bekki, Gianluca Pappaccogli, Elsa Dieudonné, Brice Temime-Roussel, Barbara D'Anna, Meeta Cesler-Maloney, Antonio Donateo, Stefano Decesari, Kathy S. Law, William R. Simpson, Javier Fochesatto, Steve R. Arnold, and Julia Schmale

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Cited articles

ADEC: Amendments to: State Air Quality Control Plan, Vol. II: III.D.7.7 Control Strategies, Alaska Department of Environmental Conservation (ADEC), https://dec.alaska.gov/media/18922/iii-d-7-07-control-strategies-adopted.pdf (last access: 27 May 2024), 2019. 
ADEC: Fairbanks North Star Borough PM2.5 Serious Area 2020 Amendments State Implementation Plan, Quantitative Milestone Report, Alaska Department of Environmental Conservation (ADEC), https://dec.alaska.gov/air/anpms/communities/fbks-particulate-matter/ (last access: 27 May 2024), 2021. 
Akansu, E. F., Dahlke, S., Siebert, H., and Wendisch, M.: Evaluation of methods to determine the surface mixing layer height of the atmospheric boundary layer in the central Arctic during polar night and transition to polar day in cloudless and cloudy conditions, Atmos. Chem. Phys., 23, 15473–15489, https://doi.org/10.5194/acp-23-15473-2023, 2023. 
Andreae, M. O. and Gelencsér, A.: Black carbon or brown carbon? The nature of light-absorbing carbonaceous aerosols, Atmos. Chem. Phys., 6, 3131–3148, https://doi.org/10.5194/acp-6-3131-2006, 2006. 
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This study presents an analysis of vertical measurements of pollution in an Alaskan city during winter. It investigates the relationship between the atmospheric structure and the layering of aerosols and trace gases. Results indicate an overall very shallow surface mixing layer. The height of this layer is strongly influenced by a local shallow wind. The study also provides information on the pollution chemical composition at different altitudes, including pollution signatures from power plants.
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