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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ftncar:oai:drupal-site.org:articles_25719 2024-04-14T08:08:31+00:00 An improved representation of fire non-methane organic gases (NMOGs) in models: emissions to reactivity Carter, Therese S. (author) Heald, Colette L. (author) Kroll, Jesse H. (author) Apel, Eric C. (author) Blake, Donald (author) Coggon, Matthew (author) Edtbauer, Achim (author) Gkatzelis, Georgios (author) Hornbrook, Rebecca S. (author) Peischl, Jeff (author) Pfannerstill, Eva Y. (author) Piel, Felix (author) Reijrink, Nina G. (author) Ringsdorf, Akima (author) Warneke, Carsten (author) Williams, Jonathan (author) Wisthaler, Armin (author) Xu, Lu (author) 2022-09-19 https://doi.org/10.5194/acp-22-12093-2022 en eng Atmospheric Chemistry and Physics--Atmos. Chem. Phys.--1680-7324 geoschem/GCClassic: GEOS-Chem 13.0.0--10.5281/zenodo.4618180 articles:25719 doi:10.5194/acp-22-12093-2022 ark:/85065/d73t9n12 Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. article Text 2022 ftncar https://doi.org/10.5194/acp-22-12093-2022 2024-03-21T18:00:26Z 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 reactivity, while ... Article in Journal/Newspaper Arctic OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Arctic Bates ENVELOPE(-65.631,-65.631,-65.821,-65.821) Canada Atmospheric Chemistry and Physics 22 18 12093 12111 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
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 reactivity, while ... |
author2 |
Carter, Therese S. (author) Heald, Colette L. (author) Kroll, Jesse H. (author) Apel, Eric C. (author) Blake, Donald (author) Coggon, Matthew (author) Edtbauer, Achim (author) Gkatzelis, Georgios (author) Hornbrook, Rebecca S. (author) Peischl, Jeff (author) Pfannerstill, Eva Y. (author) Piel, Felix (author) Reijrink, Nina G. (author) Ringsdorf, Akima (author) Warneke, Carsten (author) Williams, Jonathan (author) Wisthaler, Armin (author) Xu, Lu (author) |
format |
Article in Journal/Newspaper |
title |
An improved representation of fire non-methane organic gases (NMOGs) in models: emissions to reactivity |
spellingShingle |
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 |
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_relation |
Atmospheric Chemistry and Physics--Atmos. Chem. Phys.--1680-7324 geoschem/GCClassic: GEOS-Chem 13.0.0--10.5281/zenodo.4618180 articles:25719 doi:10.5194/acp-22-12093-2022 ark:/85065/d73t9n12 |
op_rights |
Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
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 |
_version_ |
1796305944674566144 |