An improved representation of fire non-methane organic gases (NMOGs) in models: emissions to reactivity
Fires emit a substantial amount of non-methane organic gases (NMOGs), the atmospheric oxidation of which can contribute to ozone and secondary particulate matter formation. However, the abundance and reactivity of these fire NMOGs are uncertain and historically not well constrained. In this work, we...
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Online Access: | https://doi.org/10.5194/acp-22-12093-2022 |
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ftcaltechauth:oai:authors.library.caltech.edu:e95dn-gq067 2024-10-20T14:07:25+00:00 An improved representation of fire non-methane organic gases (NMOGs) in models: emissions to reactivity Carter, Therese S. Heald, Colette L. Kroll, Jesse H. Apel, Eric C. Blake, Donald Coggon, Matthew Edtbauer, Achim Gkatzelis, Georgios Hornbrook, Rebecca S. Peischl, Jeff Pfannerstill, Eva Y. Piel, Felix Reijrink, Nina G. Ringsdorf, Akima Warneke, Carsten Williams, Jonathan Wisthaler, Armin Xu, Lu 2022-09-19 https://doi.org/10.5194/acp-22-12093-2022 unknown European Geosciences Union eprintid:117130 info:eu-repo/semantics/closedAccess Other Atmospheric Chemistry and Physics, 22(18), 12093-12111, (2022-09-19) Atmospheric Science info:eu-repo/semantics/article 2022 ftcaltechauth https://doi.org/10.5194/acp-22-12093-2022 2024-09-25T18:46:44Z Fires emit a substantial amount of non-methane organic gases (NMOGs), the atmospheric oxidation of which can contribute to ozone and secondary particulate matter formation. However, the abundance and reactivity of these fire NMOGs are uncertain and historically not well constrained. In this work, we expand the representation of fire NMOGs in a global chemical transport model, GEOS-Chem. We update emission factors to Andreae (2019) and the chemical mechanism to include recent aromatic and ethene and ethyne model improvements (Bates et al., 2021; Kwon et al., 2021). We expand the representation of NMOGs by adding lumped furans to the model (including their fire emission and oxidation chemistry) and by adding fire emissions of nine species already included in the model, prioritized for their reactivity using data from the Fire Influence on Regional to Global Environments (FIREX) laboratory studies. Based on quantified emissions factors, we estimate that our improved representation captures 72 % of emitted, identified NMOG carbon mass and 49 % of OH reactivity from savanna and temperate forest fires, a substantial increase from the standard model (49 % of mass, 28 % of OH reactivity). We evaluate fire NMOGs in our model with observations from the Amazon Tall Tower Observatory (ATTO) in Brazil, Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) and DC3 in the US, and Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) in boreal Canada. We show that NMOGs, including furan, are well simulated in the eastern US with some underestimates in the western US and that adding fire emissions improves our ability to simulate ethene in boreal Canada. We estimate that fires provide 15 % of annual mean simulated surface OH reactivity globally, as well as more than 75 % over fire source regions. Over continental regions about half of this simulated fire reactivity comes from NMOG species. We find that furans and ethene are important globally for ... Article in Journal/Newspaper Arctic Caltech Authors (California Institute of Technology) Arctic Bates ENVELOPE(-65.631,-65.631,-65.821,-65.821) Canada Atmospheric Chemistry and Physics 22 18 12093 12111 |
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Caltech Authors (California Institute of Technology) |
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Atmospheric Science |
spellingShingle |
Atmospheric Science Carter, Therese S. Heald, Colette L. Kroll, Jesse H. Apel, Eric C. Blake, Donald Coggon, Matthew Edtbauer, Achim Gkatzelis, Georgios Hornbrook, Rebecca S. Peischl, Jeff Pfannerstill, Eva Y. Piel, Felix Reijrink, Nina G. Ringsdorf, Akima Warneke, Carsten Williams, Jonathan Wisthaler, Armin Xu, Lu An improved representation of fire non-methane organic gases (NMOGs) in models: emissions to reactivity |
topic_facet |
Atmospheric Science |
description |
Fires emit a substantial amount of non-methane organic gases (NMOGs), the atmospheric oxidation of which can contribute to ozone and secondary particulate matter formation. However, the abundance and reactivity of these fire NMOGs are uncertain and historically not well constrained. In this work, we expand the representation of fire NMOGs in a global chemical transport model, GEOS-Chem. We update emission factors to Andreae (2019) and the chemical mechanism to include recent aromatic and ethene and ethyne model improvements (Bates et al., 2021; Kwon et al., 2021). We expand the representation of NMOGs by adding lumped furans to the model (including their fire emission and oxidation chemistry) and by adding fire emissions of nine species already included in the model, prioritized for their reactivity using data from the Fire Influence on Regional to Global Environments (FIREX) laboratory studies. Based on quantified emissions factors, we estimate that our improved representation captures 72 % of emitted, identified NMOG carbon mass and 49 % of OH reactivity from savanna and temperate forest fires, a substantial increase from the standard model (49 % of mass, 28 % of OH reactivity). We evaluate fire NMOGs in our model with observations from the Amazon Tall Tower Observatory (ATTO) in Brazil, Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) and DC3 in the US, and Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) in boreal Canada. We show that NMOGs, including furan, are well simulated in the eastern US with some underestimates in the western US and that adding fire emissions improves our ability to simulate ethene in boreal Canada. We estimate that fires provide 15 % of annual mean simulated surface OH reactivity globally, as well as more than 75 % over fire source regions. Over continental regions about half of this simulated fire reactivity comes from NMOG species. We find that furans and ethene are important globally for ... |
format |
Article in Journal/Newspaper |
author |
Carter, Therese S. Heald, Colette L. Kroll, Jesse H. Apel, Eric C. Blake, Donald Coggon, Matthew Edtbauer, Achim Gkatzelis, Georgios Hornbrook, Rebecca S. Peischl, Jeff Pfannerstill, Eva Y. Piel, Felix Reijrink, Nina G. Ringsdorf, Akima Warneke, Carsten Williams, Jonathan Wisthaler, Armin Xu, Lu |
author_facet |
Carter, Therese S. Heald, Colette L. Kroll, Jesse H. Apel, Eric C. Blake, Donald Coggon, Matthew Edtbauer, Achim Gkatzelis, Georgios Hornbrook, Rebecca S. Peischl, Jeff Pfannerstill, Eva Y. Piel, Felix Reijrink, Nina G. Ringsdorf, Akima Warneke, Carsten Williams, Jonathan Wisthaler, Armin Xu, Lu |
author_sort |
Carter, Therese S. |
title |
An improved representation of fire non-methane organic gases (NMOGs) in models: emissions to reactivity |
title_short |
An improved representation of fire non-methane organic gases (NMOGs) in models: emissions to reactivity |
title_full |
An improved representation of fire non-methane organic gases (NMOGs) in models: emissions to reactivity |
title_fullStr |
An improved representation of fire non-methane organic gases (NMOGs) in models: emissions to reactivity |
title_full_unstemmed |
An improved representation of fire non-methane organic gases (NMOGs) in models: emissions to reactivity |
title_sort |
improved representation of fire non-methane organic gases (nmogs) in models: emissions to reactivity |
publisher |
European Geosciences Union |
publishDate |
2022 |
url |
https://doi.org/10.5194/acp-22-12093-2022 |
long_lat |
ENVELOPE(-65.631,-65.631,-65.821,-65.821) |
geographic |
Arctic Bates Canada |
geographic_facet |
Arctic Bates Canada |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Atmospheric Chemistry and Physics, 22(18), 12093-12111, (2022-09-19) |
op_relation |
eprintid:117130 |
op_rights |
info:eu-repo/semantics/closedAccess Other |
op_doi |
https://doi.org/10.5194/acp-22-12093-2022 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
22 |
container_issue |
18 |
container_start_page |
12093 |
op_container_end_page |
12111 |
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1813446333075292160 |