Photochemical environment over Southeast Asia primed for hazardous ozone levels with influx of nitrogen oxides from seasonal biomass burning

Marvin, Margaret R.; Palmer, Paul I.; Latter, Barry G.; Siddans, Richard; Kerridge, Brian J.; Latif, Mohd Talib; Khan, Md Firoz

doi:https://doi.org/10.5194/acp-21-1917-2021

Articles | Volume 21, issue 3

https://doi.org/10.5194/acp-21-1917-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-21-1917-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 3

Research article

|

10 Feb 2021

Research article |

| 10 Feb 2021

Photochemical environment over Southeast Asia primed for hazardous ozone levels with influx of nitrogen oxides from seasonal biomass burning

Margaret R. Marvin, Paul I. Palmer, Barry G. Latter, Richard Siddans, Brian J. Kerridge, Mohd Talib Latif, and Md Firoz Khan

Model code and software

geoschem/geos-chem: GEOS-Chem 12.5.0 (Version 12.5.0) The International GEOS-Chem User Community https://doi.org/10.5281/zenodo.3403111

Short summary

We use an atmospheric chemistry model in combination with satellite and surface observations to investigate how biomass burning affects tropospheric ozone over Southeast Asia during its fire seasons. We find that nitrogen oxides from biomass burning were responsible for about 30 % of the regional ozone formation potential, and we estimate that ozone from biomass burning caused more than 400 excess premature deaths in Southeast Asia during the peak burning months of March and September 2014.