Impact of aromatics and monoterpenes on simulated tropospheric ozone and total OH reactivity
The accurate representation of volatile organic compounds (VOCs) in models is an important step towards the goal of understanding and predicting many changes in atmospheric constituents relevant to climate change and human health. While isoprene is the most abundant non-methane VOC, many other compo...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Elsevier BV
2020
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| Online Access: | https://hdl.handle.net/1721.1/123814 |
| _version_ | 1826197903530524672 |
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| author | Porter, William C Safieddine, Sarah Heald, Colette L. |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Porter, William C Safieddine, Sarah Heald, Colette L. |
| author_sort | Porter, William C |
| collection | MIT |
| description | The accurate representation of volatile organic compounds (VOCs) in models is an important step towards the goal of understanding and predicting many changes in atmospheric constituents relevant to climate change and human health. While isoprene is the most abundant non-methane VOC, many other compounds play a large role in governing pollutant formation and the overall oxidative capacity of the atmosphere. We quantify the impacts of aromatics and monoterpenes, two classes of VOC not included in the standard gas-phase chemistry of the chemical transport model GEOS-Chem, on atmospheric composition. We find that including these compounds increases mean total summer OH reactivity by an average of 11% over the United States, Europe, and Asia. This increased reactivity results in higher simulated levels of O[subscript 3], raising maximum daily 8-h average O[subscript 3] in the summer by up to 14 ppb at some NO[subscript x]-saturated locations. Keywords: Tropospheric ozone; VOCs; Atmospheric chemistry; Air quality modeling |
| first_indexed | 2024-09-23T10:55:24Z |
| format | Article |
| id | mit-1721.1/123814 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:55:24Z |
| publishDate | 2020 |
| publisher | Elsevier BV |
| record_format | dspace |
| spelling | mit-1721.1/1238142022-10-01T00:00:44Z Impact of aromatics and monoterpenes on simulated tropospheric ozone and total OH reactivity Porter, William C Safieddine, Sarah Heald, Colette L. Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Heald, Colette L. The accurate representation of volatile organic compounds (VOCs) in models is an important step towards the goal of understanding and predicting many changes in atmospheric constituents relevant to climate change and human health. While isoprene is the most abundant non-methane VOC, many other compounds play a large role in governing pollutant formation and the overall oxidative capacity of the atmosphere. We quantify the impacts of aromatics and monoterpenes, two classes of VOC not included in the standard gas-phase chemistry of the chemical transport model GEOS-Chem, on atmospheric composition. We find that including these compounds increases mean total summer OH reactivity by an average of 11% over the United States, Europe, and Asia. This increased reactivity results in higher simulated levels of O[subscript 3], raising maximum daily 8-h average O[subscript 3] in the summer by up to 14 ppb at some NO[subscript x]-saturated locations. Keywords: Tropospheric ozone; VOCs; Atmospheric chemistry; Air quality modeling National Science Foundation (Grant ATM-1564495) United States. National Oceanic and Atmospheric Administration (Grant NA14OAR4310132) 2020-02-14T18:42:27Z 2020-02-14T18:42:27Z 2017-11 2017-08 Article http://purl.org/eprint/type/JournalArticle 1352-2310 https://hdl.handle.net/1721.1/123814 Porter, William C. et al. "Impact of aromatics and monoterpenes on simulated tropospheric ozone and total OH reactivity." Atmospheric Environment 169 (November 2017): 250-257 © 2017 Elsevier en_US http://dx.doi.org/10.1016/j.atmosenv.2017.08.048 Atmospheric Environment Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier BV Prof. Heald via Elizabeth Soergel |
| spellingShingle | Porter, William C Safieddine, Sarah Heald, Colette L. Impact of aromatics and monoterpenes on simulated tropospheric ozone and total OH reactivity |
| title | Impact of aromatics and monoterpenes on simulated tropospheric ozone and total OH reactivity |
| title_full | Impact of aromatics and monoterpenes on simulated tropospheric ozone and total OH reactivity |
| title_fullStr | Impact of aromatics and monoterpenes on simulated tropospheric ozone and total OH reactivity |
| title_full_unstemmed | Impact of aromatics and monoterpenes on simulated tropospheric ozone and total OH reactivity |
| title_short | Impact of aromatics and monoterpenes on simulated tropospheric ozone and total OH reactivity |
| title_sort | impact of aromatics and monoterpenes on simulated tropospheric ozone and total oh reactivity |
| url | https://hdl.handle.net/1721.1/123814 |
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