Articles | Volume 24, issue 5
https://doi.org/10.5194/acp-24-2985-2024
https://doi.org/10.5194/acp-24-2985-2024
Research article
 | 
07 Mar 2024
Research article |  | 07 Mar 2024

Improved estimates of smoke exposure during Australia fire seasons: importance of quantifying plume injection heights

Xu Feng, Loretta J. Mickley, Michelle L. Bell, Tianjia Liu, Jenny A. Fisher, and Maria Val Martin

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Cited articles

Abatzoglou, J. T. and Williams, A. P.: Impact of anthropogenic climate change on wildfire across western US forests, P. Natl. Acad. Sci. USA, 113, 11770–11775, https://doi.org/10.1073/pnas.1607171113, 2016. 
Aguilera, R., Corringham, T., Gershunov, A., and Benmarhnia, T.: Wildfire smoke impacts respiratory health more than fine particles from other sources: observational evidence from Southern California, Nat. Commun., 12, 1493, https://doi.org/10.1038/s41467-021-21708-0, 2021. 
Aryal, R., Kafley, D., Beechami, S., and Morawska, L.: Air Quality in the Sydney Metropolitan Region during the 2013 Blue Mountains Wildfire, Aerosol Air Qual. Res., 18, 2420–2432, https://doi.org/10.4209/aaqr.2017.10.0427, 2018. 
Australian Bureau of Meteorology: The Australian Monsoon, http://www.bom.gov.au/climate/about/australian-climate-influences.shtml?bookmark=monsoon, last access: 29 August 2023a. 
Australian Bureau of Meteorology: Bushfire Weather, http://www.bom.gov.au/weather-services/fire-weather-centre/bushfire-weather/index.shtml, last access: 29 August 2023b. 
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Short summary
During severe wildfire seasons, smoke can have a significant impact on air quality in Australia. Our study demonstrates that characterization of the smoke plume injection fractions greatly affects estimates of surface smoke PM2.5. Using the plume behavior predicted by the machine learning method leads to the best model agreement with observed surface PM2.5 in key cities across Australia, with smoke PM2.5 accounting for 5 %–52 % of total PM2.5 on average during fire seasons from 2009 to 2020.
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