气候变化领域集成服务门户(CCPortal): Direct observations indicate photodearadable oxygenated volatile organic compounds (OVOCs) as larger contributors to radicals and ozone production in the atmosphere

CCPortal

DOI	10.5194/acp-22-4117-2022
	Direct observations indicate photodearadable oxygenated volatile organic compounds (OVOCs) as larger contributors to radicals and ozone production in the atmosphere
	Wang, Wenjie; Yuan, Bin; Peng, Yuwen; Su, Hang; Cheng, Yafang; Yang, Suxia; Wu, Caihong; Qi, Jipeng; Bao, Fengxia; Huangfu, Yibo; Wang, Chaomin; Ye, Chenshuo; Wang, Zelong; Wang, Baolin; Wang, Xinming; Song, Wei; Hu, Weiwei; Cheng, Peng; Zhu, Manni; Zheng, Junyu; Shao, Min
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	4117
结束页码	4128
卷号	22 期号:6 页码:12
英文摘要	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 ROx 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 ROx 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.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000774867600001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273747
作者单位	Jinan University; Max Planck Society; Max Planck Society; Qilu University of Technology; Chinese Academy of Sciences; Guangzhou Institute of Geochemistry, CAS; Jinan University
推荐引用方式 GB/T 7714	Wang, Wenjie,Yuan, Bin,Peng, Yuwen,et al. Direct observations indicate photodearadable oxygenated volatile organic compounds (OVOCs) as larger contributors to radicals and ozone production in the atmosphere[J],2022,22(6):12.
APA	Wang, Wenjie.,Yuan, Bin.,Peng, Yuwen.,Su, Hang.,Cheng, Yafang.,...&Shao, Min.(2022).Direct observations indicate photodearadable oxygenated volatile organic compounds (OVOCs) as larger contributors to radicals and ozone production in the atmosphere.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(6),12.
MLA	Wang, Wenjie,et al."Direct observations indicate photodearadable oxygenated volatile organic compounds (OVOCs) as larger contributors to radicals and ozone production in the atmosphere".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.6(2022):12.