Characterization of size-segregated particles turbulent fluxes in an Arctic city (Fairbanks, Alaska)
International audience Wintertime air pollution affects air quality of Arctic and sub-Arctic urban areas, because of the coupling between strong local emissions for residential heating and energy production and poor atmospheric dispersion associated with a stratified planetary boundary layer. Aeroso...
Main Authors: | , , , , , , , , , , , , , , , , |
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Other Authors: | , , , , , , , , , , , , , , , , , , , |
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Language: | English |
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HAL CCSD
2023
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Online Access: | https://insu.hal.science/insu-04086155 https://doi.org/10.5194/egusphere-egu23-14269 |
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ftunivaixmarseil:oai:HAL:insu-04086155v1 |
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Open Polar |
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Aix-Marseille Université: HAL |
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ftunivaixmarseil |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Pappaccogli, Gianluca Donateo, Antonio Scoto, Federico Busetto, Maurizio Pohorsky, Roman Baccarini, Andrea Schmale, Julia Barret, Brice Bekki, Slimane Brett, Natalie Law, Kathy S. Dieudonné, Elsa Fochesatto, Gilberto Simpson, William d'Anna, Barbara Temime-Roussel, Brice Decesari, Stefano Characterization of size-segregated particles turbulent fluxes in an Arctic city (Fairbanks, Alaska) |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Wintertime air pollution affects air quality of Arctic and sub-Arctic urban areas, because of the coupling between strong local emissions for residential heating and energy production and poor atmospheric dispersion associated with a stratified planetary boundary layer. Aerosols represent priority pollutants in such environments, and their behaviour in the Arctic wintertime boundary layer not only impacts air quality but also determines deposition on snow or ice surfaces, leading to chemical and physical modifications in the snowpack. The interactions between boundary layer meteorology and air pollution were the focus of the international ALPACA (Alaskan Layered Pollution and Chemical Analysis) field campaign held in January and February 2022 in Fairbanks (AK, USA). The aim of the present work is to analyse the fluxes of atmospheric particles in at a urban background site in Fairbanks, based on continuous observations of aerosol concentration, size distributions, and size-segregated deposition velocities. The EC system was installed at the suburban site of UAF (University of Alaska Farm), located nearby the foothills bordering the city basin. The main micrometeorological parameters and fluxes (wind field, friction velocity, turbulent kinetic energy, and sensible heat flux) were characterized in terms of boundary layer conditions (occurrence of thermal inversions, dynamic stratifications, vertical wind shear, slope currents, coherent turbulence structures). The aerosol eddy covariance system was based on a condensation particle counter (CPC) - able to measure particles down to 5 nm in diameter - and an Optical Particle Counter Optical Particle Counter (OPC) for evaluating particle fluxes in the accumulation mode (0.25 < dp < 0.8 μm) and quasi-coarse mode (0.8 < dp < 3 μm). The median number concentration was 13 E+3 cm−3, 76 cm−3 and 0.3 cm−3 for ultrafine, accumulation and quasi-coarse particles mode, with higher concentrations found at low wind speeds. The particle fluxes ... |
author2 |
Istituto di Scienze dell'Atmosfera e del Clima Lecce (ISAC) National Research Council of Italy Istituto di Scienze dell'Atmosfera e del Clima Bologna (ISAC) Extreme Environments Research Laboratory (EERL) Ecole Polytechnique Fédérale de Lausanne (EPFL) Laboratory of Atmospheric Processes and their Impacts (LAPI) Laboratoire d'aérologie (LAERO) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Physico-Chimie de l'Atmosphère (LPCA) Université du Littoral Côte d'Opale (ULCO) Geophysical Institute Fairbanks University of Alaska Fairbanks (UAF) Laboratoire Chimie de l'environnement (LCE) Aix Marseille Université (AMU)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Conference Object |
author |
Pappaccogli, Gianluca Donateo, Antonio Scoto, Federico Busetto, Maurizio Pohorsky, Roman Baccarini, Andrea Schmale, Julia Barret, Brice Bekki, Slimane Brett, Natalie Law, Kathy S. Dieudonné, Elsa Fochesatto, Gilberto Simpson, William d'Anna, Barbara Temime-Roussel, Brice Decesari, Stefano |
author_facet |
Pappaccogli, Gianluca Donateo, Antonio Scoto, Federico Busetto, Maurizio Pohorsky, Roman Baccarini, Andrea Schmale, Julia Barret, Brice Bekki, Slimane Brett, Natalie Law, Kathy S. Dieudonné, Elsa Fochesatto, Gilberto Simpson, William d'Anna, Barbara Temime-Roussel, Brice Decesari, Stefano |
author_sort |
Pappaccogli, Gianluca |
title |
Characterization of size-segregated particles turbulent fluxes in an Arctic city (Fairbanks, Alaska) |
title_short |
Characterization of size-segregated particles turbulent fluxes in an Arctic city (Fairbanks, Alaska) |
title_full |
Characterization of size-segregated particles turbulent fluxes in an Arctic city (Fairbanks, Alaska) |
title_fullStr |
Characterization of size-segregated particles turbulent fluxes in an Arctic city (Fairbanks, Alaska) |
title_full_unstemmed |
Characterization of size-segregated particles turbulent fluxes in an Arctic city (Fairbanks, Alaska) |
title_sort |
characterization of size-segregated particles turbulent fluxes in an arctic city (fairbanks, alaska) |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://insu.hal.science/insu-04086155 https://doi.org/10.5194/egusphere-egu23-14269 |
op_coverage |
Vienna (Austria), Austria |
geographic |
Arctic Fairbanks |
geographic_facet |
Arctic Fairbanks |
genre |
Arctic Alaska |
genre_facet |
Arctic Alaska |
op_source |
EGU General Assembly 2023 https://insu.hal.science/insu-04086155 EGU General Assembly 2023, Apr 2023, Vienna (Austria), Austria. ⟨10.5194/egusphere-egu23-14269⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/egusphere-egu23-14269 insu-04086155 https://insu.hal.science/insu-04086155 doi:10.5194/egusphere-egu23-14269 |
op_doi |
https://doi.org/10.5194/egusphere-egu23-14269 |
_version_ |
1798840379379810304 |
spelling |
ftunivaixmarseil:oai:HAL:insu-04086155v1 2024-05-12T07:59:15+00:00 Characterization of size-segregated particles turbulent fluxes in an Arctic city (Fairbanks, Alaska) Pappaccogli, Gianluca Donateo, Antonio Scoto, Federico Busetto, Maurizio Pohorsky, Roman Baccarini, Andrea Schmale, Julia Barret, Brice Bekki, Slimane Brett, Natalie Law, Kathy S. Dieudonné, Elsa Fochesatto, Gilberto Simpson, William d'Anna, Barbara Temime-Roussel, Brice Decesari, Stefano Istituto di Scienze dell'Atmosfera e del Clima Lecce (ISAC) National Research Council of Italy Istituto di Scienze dell'Atmosfera e del Clima Bologna (ISAC) Extreme Environments Research Laboratory (EERL) Ecole Polytechnique Fédérale de Lausanne (EPFL) Laboratory of Atmospheric Processes and their Impacts (LAPI) Laboratoire d'aérologie (LAERO) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Physico-Chimie de l'Atmosphère (LPCA) Université du Littoral Côte d'Opale (ULCO) Geophysical Institute Fairbanks University of Alaska Fairbanks (UAF) Laboratoire Chimie de l'environnement (LCE) Aix Marseille Université (AMU)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) Vienna (Austria), Austria 2023-04 https://insu.hal.science/insu-04086155 https://doi.org/10.5194/egusphere-egu23-14269 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/egusphere-egu23-14269 insu-04086155 https://insu.hal.science/insu-04086155 doi:10.5194/egusphere-egu23-14269 EGU General Assembly 2023 https://insu.hal.science/insu-04086155 EGU General Assembly 2023, Apr 2023, Vienna (Austria), Austria. ⟨10.5194/egusphere-egu23-14269⟩ [SDE]Environmental Sciences info:eu-repo/semantics/conferenceObject Conference papers 2023 ftunivaixmarseil https://doi.org/10.5194/egusphere-egu23-14269 2024-04-18T00:30:32Z International audience Wintertime air pollution affects air quality of Arctic and sub-Arctic urban areas, because of the coupling between strong local emissions for residential heating and energy production and poor atmospheric dispersion associated with a stratified planetary boundary layer. Aerosols represent priority pollutants in such environments, and their behaviour in the Arctic wintertime boundary layer not only impacts air quality but also determines deposition on snow or ice surfaces, leading to chemical and physical modifications in the snowpack. The interactions between boundary layer meteorology and air pollution were the focus of the international ALPACA (Alaskan Layered Pollution and Chemical Analysis) field campaign held in January and February 2022 in Fairbanks (AK, USA). The aim of the present work is to analyse the fluxes of atmospheric particles in at a urban background site in Fairbanks, based on continuous observations of aerosol concentration, size distributions, and size-segregated deposition velocities. The EC system was installed at the suburban site of UAF (University of Alaska Farm), located nearby the foothills bordering the city basin. The main micrometeorological parameters and fluxes (wind field, friction velocity, turbulent kinetic energy, and sensible heat flux) were characterized in terms of boundary layer conditions (occurrence of thermal inversions, dynamic stratifications, vertical wind shear, slope currents, coherent turbulence structures). The aerosol eddy covariance system was based on a condensation particle counter (CPC) - able to measure particles down to 5 nm in diameter - and an Optical Particle Counter Optical Particle Counter (OPC) for evaluating particle fluxes in the accumulation mode (0.25 < dp < 0.8 μm) and quasi-coarse mode (0.8 < dp < 3 μm). The median number concentration was 13 E+3 cm−3, 76 cm−3 and 0.3 cm−3 for ultrafine, accumulation and quasi-coarse particles mode, with higher concentrations found at low wind speeds. The particle fluxes ... Conference Object Arctic Alaska Aix-Marseille Université: HAL Arctic Fairbanks |