Investigating processes influencing simulation of local Arctic wintertime anthropogenic pollution in Fairbanks, Alaska during ALPACA-2022
Lagrangian tracer simulations are deployed to investigate processes influencing vertical and horizontal dispersion of anthropogenic pollution in Fairbanks, Alaska, during the ALPACA-2022 field campaign. Simulations of carbon monoxide (CO), sulphur dioxide (SO 2 ) and nitrogen oxides (NO x ), includi...
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
---|---|
Format: | Text |
Language: | English |
Published: |
2024
|
Subjects: | |
Online Access: | https://doi.org/10.5194/egusphere-2024-1450 https://egusphere.copernicus.org/preprints/2024/egusphere-2024-1450/ |
id |
ftcopernicus:oai:publications.copernicus.org:egusphere120279 |
---|---|
record_format |
openpolar |
spelling |
ftcopernicus:oai:publications.copernicus.org:egusphere120279 2024-09-09T19:21:11+00:00 Investigating processes influencing simulation of local Arctic wintertime anthropogenic pollution in Fairbanks, Alaska during ALPACA-2022 Brett, Natalie Law, Kathy S. Arnold, Steve R. Fochesatto, Javier G. Raut, Jean-Christophe Onishi, Tatsuo Gilliam, Robert Fahey, Kathleen Huff, Deanna Pouliot, George Barret, Brice Dieudonne, Elsa Pohorsky, Roman Schmale, Julia Baccarini, Andrea Bekki, Slimane Pappaccogli, Gianluca Scoto, Federico Decesari, Stefano Donateo, Antonio Cesler-Maloney, Meeta Simpson, William Medina, Patrice D'Anna, Barbara Temime-Roussel, Brice Savarino, Joel Albertin, Sarah Mao, Jingqiu Alexander, Becky Moon, Allison DeCarlo, Peter F. Selimovic, Vanessa Yokelson, Robert Robinson, Ellis S. 2024-06-04 application/pdf https://doi.org/10.5194/egusphere-2024-1450 https://egusphere.copernicus.org/preprints/2024/egusphere-2024-1450/ eng eng doi:10.5194/egusphere-2024-1450 https://egusphere.copernicus.org/preprints/2024/egusphere-2024-1450/ eISSN: Text 2024 ftcopernicus https://doi.org/10.5194/egusphere-2024-1450 2024-08-28T05:24:15Z Lagrangian tracer simulations are deployed to investigate processes influencing vertical and horizontal dispersion of anthropogenic pollution in Fairbanks, Alaska, during the ALPACA-2022 field campaign. Simulations of carbon monoxide (CO), sulphur dioxide (SO 2 ) and nitrogen oxides (NO x ), including surface and elevated emissions, are highest at the surface under very cold stable conditions. Regional enhancements, simulated up to 200 m, are due to elevated power plant emissions above 50 m, with south-westerly pollutant outflow. Fairbanks regional pollution may be contributing 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 NO x 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 NO x during very cold polluted conditions is considerably improved following the inclusion of substantial increases in diesel vehicle NO x emissions at cold temperatures (e.g. a factor of 6 at -30 °C). In contrast, overestimation of surface SO 2 is attributed to issues related to the vertical dispersion of elevated space heating emissions during strongly and weakly stable conditions. This study highlights the need for improvements to local wintertime Arctic anthropogenic surface and elevated emissions and improved simulation of Arctic stable boundary layers. Text Arctic Alaska Copernicus Publications: E-Journals Arctic Fairbanks |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
Lagrangian tracer simulations are deployed to investigate processes influencing vertical and horizontal dispersion of anthropogenic pollution in Fairbanks, Alaska, during the ALPACA-2022 field campaign. Simulations of carbon monoxide (CO), sulphur dioxide (SO 2 ) and nitrogen oxides (NO x ), including surface and elevated emissions, are highest at the surface under very cold stable conditions. Regional enhancements, simulated up to 200 m, are due to elevated power plant emissions above 50 m, with south-westerly pollutant outflow. Fairbanks regional pollution may be contributing 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 NO x 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 NO x during very cold polluted conditions is considerably improved following the inclusion of substantial increases in diesel vehicle NO x emissions at cold temperatures (e.g. a factor of 6 at -30 °C). In contrast, overestimation of surface SO 2 is attributed to issues related to the vertical dispersion of elevated space heating emissions during strongly and weakly stable conditions. This study highlights the need for improvements to local wintertime Arctic anthropogenic surface and elevated emissions and improved simulation of Arctic stable boundary layers. |
format |
Text |
author |
Brett, Natalie Law, Kathy S. Arnold, Steve R. Fochesatto, Javier G. Raut, Jean-Christophe Onishi, Tatsuo Gilliam, Robert Fahey, Kathleen Huff, Deanna Pouliot, George Barret, Brice Dieudonne, Elsa Pohorsky, Roman Schmale, Julia Baccarini, Andrea Bekki, Slimane Pappaccogli, Gianluca Scoto, Federico Decesari, Stefano Donateo, Antonio Cesler-Maloney, Meeta Simpson, William Medina, Patrice D'Anna, Barbara Temime-Roussel, Brice Savarino, Joel Albertin, Sarah Mao, Jingqiu Alexander, Becky Moon, Allison DeCarlo, Peter F. Selimovic, Vanessa Yokelson, Robert Robinson, Ellis S. |
spellingShingle |
Brett, Natalie Law, Kathy S. Arnold, Steve R. Fochesatto, Javier G. Raut, Jean-Christophe Onishi, Tatsuo Gilliam, Robert Fahey, Kathleen Huff, Deanna Pouliot, George Barret, Brice Dieudonne, Elsa Pohorsky, Roman Schmale, Julia Baccarini, Andrea Bekki, Slimane Pappaccogli, Gianluca Scoto, Federico Decesari, Stefano Donateo, Antonio Cesler-Maloney, Meeta Simpson, William Medina, Patrice D'Anna, Barbara Temime-Roussel, Brice Savarino, Joel Albertin, Sarah Mao, Jingqiu Alexander, Becky Moon, Allison DeCarlo, Peter F. Selimovic, Vanessa Yokelson, Robert Robinson, Ellis S. Investigating processes influencing simulation of local Arctic wintertime anthropogenic pollution in Fairbanks, Alaska during ALPACA-2022 |
author_facet |
Brett, Natalie Law, Kathy S. Arnold, Steve R. Fochesatto, Javier G. Raut, Jean-Christophe Onishi, Tatsuo Gilliam, Robert Fahey, Kathleen Huff, Deanna Pouliot, George Barret, Brice Dieudonne, Elsa Pohorsky, Roman Schmale, Julia Baccarini, Andrea Bekki, Slimane Pappaccogli, Gianluca Scoto, Federico Decesari, Stefano Donateo, Antonio Cesler-Maloney, Meeta Simpson, William Medina, Patrice D'Anna, Barbara Temime-Roussel, Brice Savarino, Joel Albertin, Sarah Mao, Jingqiu Alexander, Becky Moon, Allison DeCarlo, Peter F. Selimovic, Vanessa Yokelson, Robert Robinson, Ellis S. |
author_sort |
Brett, Natalie |
title |
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_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_sort |
investigating processes influencing simulation of local arctic wintertime anthropogenic pollution in fairbanks, alaska during alpaca-2022 |
publishDate |
2024 |
url |
https://doi.org/10.5194/egusphere-2024-1450 https://egusphere.copernicus.org/preprints/2024/egusphere-2024-1450/ |
geographic |
Arctic Fairbanks |
geographic_facet |
Arctic Fairbanks |
genre |
Arctic Alaska |
genre_facet |
Arctic Alaska |
op_source |
eISSN: |
op_relation |
doi:10.5194/egusphere-2024-1450 https://egusphere.copernicus.org/preprints/2024/egusphere-2024-1450/ |
op_doi |
https://doi.org/10.5194/egusphere-2024-1450 |
_version_ |
1809761396030701568 |