Direct observations indicate photodegradable oxygenated volatile organic compounds (OVOCs) as larger contributors to radicals and ozone production in the atmosphere
<p>Volatile organic compounds (VOCs) regulate atmospheric oxidation capacity, and the reactions of VOCs are key in understanding ozone formation and its mitigation strategies. When evaluating their impact, most previous studies did not fully consider the role of oxygenated VOCs due to limitati...
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| Language: | English |
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Copernicus Publications
2022-03-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/22/4117/2022/acp-22-4117-2022.pdf |
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| author | W. Wang W. Wang B. Yuan B. Yuan Y. Peng Y. Peng H. Su Y. Cheng S. Yang S. Yang C. Wu C. Wu J. Qi J. Qi F. Bao Y. Huangfu Y. Huangfu C. Wang C. Wang C. Ye Z. Wang Z. Wang B. Wang X. Wang W. Song W. Hu P. Cheng M. Zhu M. Zhu J. Zheng J. Zheng M. Shao M. Shao |
| author_facet | W. Wang W. Wang B. Yuan B. Yuan Y. Peng Y. Peng H. Su Y. Cheng S. Yang S. Yang C. Wu C. Wu J. Qi J. Qi F. Bao Y. Huangfu Y. Huangfu C. Wang C. Wang C. Ye Z. Wang Z. Wang B. Wang X. Wang W. Song W. Hu P. Cheng M. Zhu M. Zhu J. Zheng J. Zheng M. Shao M. Shao |
| author_sort | W. Wang |
| collection | DOAJ |
| description | <p>Volatile organic compounds (VOCs) regulate atmospheric oxidation
capacity, and the reactions of VOCs are key in understanding ozone formation
and its mitigation strategies. When evaluating their impact, most previous
studies did not fully consider the role of oxygenated VOCs due to
limitations of measurement technology. By using a proton-transfer-reaction
time-of-flight mass spectrometer (PTR-ToF-MS) combined with a gas
chromatograph–mass spectrometer (GC–MS), a large number of oxygenated VOCs (OVOCs)
have been quantified in Guangzhou city, China. Based on the new dataset, we
demonstrate that constraints using OVOC observations are essential in
modeling radical and ozone production, as modeled OVOCs can be
substantially lower than measurements, potentially due to primary emissions
and/or missing secondary sources. Non-formaldehyde (HCHO) OVOCs can
contribute large fractions (22 %–44 %) of total RO<span class="inline-formula"><sub><i>x</i></sub></span> radical production,
which are comparable to or larger than the contributions from nitrous acid
and formaldehyde. Our results show that models without OVOC constraints
using ambient measurements will underestimate the production rates of
RO<span class="inline-formula"><sub><i>x</i></sub></span> and ozone, and they may also affect the determination of sensitivity
regime in ozone formation. Therefore, a thorough quantification of
photodegradable OVOC species is in urgent need to understand accurately the ozone chemistry and to develop effective control strategies.</p> |
| first_indexed | 2024-12-13T02:07:27Z |
| format | Article |
| id | doaj.art-11629b951e414f02a72cfb2f00d19c62 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-13T02:07:27Z |
| publishDate | 2022-03-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-11629b951e414f02a72cfb2f00d19c622022-12-22T00:03:06ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242022-03-01224117412810.5194/acp-22-4117-2022Direct observations indicate photodegradable oxygenated volatile organic compounds (OVOCs) as larger contributors to radicals and ozone production in the atmosphereW. Wang0W. Wang1B. Yuan2B. Yuan3Y. Peng4Y. Peng5H. Su6Y. Cheng7S. Yang8S. Yang9C. Wu10C. Wu11J. Qi12J. Qi13F. Bao14Y. Huangfu15Y. Huangfu16C. Wang17C. Wang18C. Ye19Z. Wang20Z. Wang21B. Wang22X. Wang23W. Song24W. Hu25P. Cheng26M. Zhu27M. Zhu28J. Zheng29J. Zheng30M. Shao31M. Shao32Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, ChinaMultiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz 55128, GermanyInstitute for Environmental and Climate Research, Jinan University, Guangzhou 511443, ChinaGuangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, ChinaInstitute for Environmental and Climate Research, Jinan University, Guangzhou 511443, ChinaGuangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, ChinaMultiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz 55128, GermanyMinerva Research Group, Max Planck Institute for Chemistry, Mainz 55128, GermanyInstitute for Environmental and Climate Research, Jinan University, Guangzhou 511443, ChinaGuangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, ChinaInstitute for Environmental and Climate Research, Jinan University, Guangzhou 511443, ChinaGuangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, ChinaInstitute for Environmental and Climate Research, Jinan University, Guangzhou 511443, ChinaGuangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, ChinaMultiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz 55128, GermanyInstitute for Environmental and Climate Research, Jinan University, Guangzhou 511443, ChinaGuangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, ChinaInstitute for Environmental and Climate Research, Jinan University, Guangzhou 511443, ChinaGuangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, ChinaInstitute for Environmental and Climate Research, Jinan University, Guangzhou 511443, ChinaInstitute for Environmental and Climate Research, Jinan University, Guangzhou 511443, ChinaGuangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, ChinaSchool of Environmental Science and Engineering, Qilu University of Technology, Jinan 250353, ChinaState Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, ChinaState Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, ChinaState Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, ChinaInstitute of Mass Spectrometry and Atmospheric Environment, Jinan University, Guangzhou 510632, ChinaInstitute for Environmental and Climate Research, Jinan University, Guangzhou 511443, ChinaGuangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, ChinaInstitute for Environmental and Climate Research, Jinan University, Guangzhou 511443, ChinaGuangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, ChinaInstitute for Environmental and Climate Research, Jinan University, Guangzhou 511443, ChinaGuangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, China<p>Volatile organic compounds (VOCs) regulate atmospheric oxidation capacity, and the reactions of VOCs are key in understanding ozone formation and its mitigation strategies. When evaluating their impact, most previous studies did not fully consider the role of oxygenated VOCs due to limitations of measurement technology. By using a proton-transfer-reaction time-of-flight mass spectrometer (PTR-ToF-MS) combined with a gas chromatograph–mass spectrometer (GC–MS), a large number of oxygenated VOCs (OVOCs) have been quantified in Guangzhou city, China. Based on the new dataset, we demonstrate that constraints using OVOC observations are essential in modeling radical and ozone production, as modeled OVOCs can be substantially lower than measurements, potentially due to primary emissions and/or missing secondary sources. Non-formaldehyde (HCHO) OVOCs can contribute large fractions (22 %–44 %) of total RO<span class="inline-formula"><sub><i>x</i></sub></span> radical production, which are comparable to or larger than the contributions from nitrous acid and formaldehyde. Our results show that models without OVOC constraints using ambient measurements will underestimate the production rates of RO<span class="inline-formula"><sub><i>x</i></sub></span> and ozone, and they may also affect the determination of sensitivity regime in ozone formation. Therefore, a thorough quantification of photodegradable OVOC species is in urgent need to understand accurately the ozone chemistry and to develop effective control strategies.</p>https://acp.copernicus.org/articles/22/4117/2022/acp-22-4117-2022.pdf |
| spellingShingle | W. Wang W. Wang B. Yuan B. Yuan Y. Peng Y. Peng H. Su Y. Cheng S. Yang S. Yang C. Wu C. Wu J. Qi J. Qi F. Bao Y. Huangfu Y. Huangfu C. Wang C. Wang C. Ye Z. Wang Z. Wang B. Wang X. Wang W. Song W. Hu P. Cheng M. Zhu M. Zhu J. Zheng J. Zheng M. Shao M. Shao Direct observations indicate photodegradable oxygenated volatile organic compounds (OVOCs) as larger contributors to radicals and ozone production in the atmosphere Atmospheric Chemistry and Physics |
| title | Direct observations indicate photodegradable oxygenated volatile organic compounds (OVOCs) as larger contributors to radicals and ozone production in the atmosphere |
| title_full | Direct observations indicate photodegradable oxygenated volatile organic compounds (OVOCs) as larger contributors to radicals and ozone production in the atmosphere |
| title_fullStr | Direct observations indicate photodegradable oxygenated volatile organic compounds (OVOCs) as larger contributors to radicals and ozone production in the atmosphere |
| title_full_unstemmed | Direct observations indicate photodegradable oxygenated volatile organic compounds (OVOCs) as larger contributors to radicals and ozone production in the atmosphere |
| title_short | Direct observations indicate photodegradable oxygenated volatile organic compounds (OVOCs) as larger contributors to radicals and ozone production in the atmosphere |
| title_sort | direct observations indicate photodegradable oxygenated volatile organic compounds ovocs as larger contributors to radicals and ozone production in the atmosphere |
| url | https://acp.copernicus.org/articles/22/4117/2022/acp-22-4117-2022.pdf |
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