气候变化领域集成服务门户(CCPortal): Atmospheric nitrous acid (HONO) at a rural coastal site in North China: Seasonal variations and effects of biomass burning

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DOI	10.1016/j.atmosenv.2020.117429
	Atmospheric nitrous acid (HONO) at a rural coastal site in North China: Seasonal variations and effects of biomass burning
	Gu R.; Zheng P.; Chen T.; Dong C.; Wang Y.; Liu Y.; Liu Y.; Luo Y.; Han G.; Wang X.; Zhou X.; Wang T.; Wang W.; Xue L.
发表日期	2020
ISSN	1352-2310
卷号	229
英文摘要	Nitrous acid (HONO) plays a significant role in atmospheric chemistry due to its contribution to hydroxyl radical (OH). However, no scientific consensus has been achieved about the daytime HONO formation mechanisms. To identify the seasonal variations of HONO chemistry and the impacts of biomass burning (BB), we performed a two-phased field study in winter-spring and summer (covering a harvest season) in 2017 at a rural coastal site in North China. Though the mean HONO concentration in winter-spring (0.26 ± 0.28 ppbv) was higher than in summer (0.17 ± 0.19 ppbv), the maximum HONO concentrations were comparable (~2 ppbv) in the two campaigns. Both the HONO/NOx ratio and nocturnal heterogeneous conversion efficiency of HONO (CHONO) in summer were over twice of that in winter-spring. The daytime budget analysis also revealed that the strength of Pother (i.e., the HONO sources apart from the reaction of OH + NO) in summer was double of that in winter-spring. BB affected the HONO concentration by enhancing the contribution of heterogeneous HONO production on the aerosol surface but weakening the role of photo-related HONO formation. HONO photolysis was a significant source of OH in both winter-spring and summer, and its contribution could be further enhanced during the BB episode in summer. Our study demonstrates the significant seasonal variations of HONO and the effects of BB, and suggests needs for more multi-season observations and considerations of BB, especially during the harvest time, in HONO research. © 2020 Elsevier Ltd
关键词	Biomass burning Hydroxyl radical Nitrous acid North China Seasonal variation
语种	英语
scopus关键词	Atmospheric chemistry; Budget control; Coastal engineering; Image enhancement; Photolysis; Biomass-burning; Coastal sites; Daytime budgets; Field studies; Formation mechanism; Harvest season; Hydroxyl radicals; Seasonal variation; Inorganic acids; nitrous acid; atmospheric chemistry; biomass burning; concentration (composition); formation mechanism; hydroxyl radical; nitrous acid; photolysis; rural area; seasonal variation; aerosol; Article; atmosphere; biomass; biomass burning; budget; circadian rhythm; combustion; ecological procedures; field study; harvest; meteorology; photochemistry; photolysis; priority journal; rural area; seashore; seasonal variation; spring; summer; winter; China
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249204
作者单位	Environment Research Institute, Shandong University, Qingdao, 266237, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong99907, China; Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; Ji'nan Institute of Environmental Science, Ji'nan, 250100, China
推荐引用方式 GB/T 7714	Gu R.,Zheng P.,Chen T.,et al. Atmospheric nitrous acid (HONO) at a rural coastal site in North China: Seasonal variations and effects of biomass burning[J],2020,229.
APA	Gu R..,Zheng P..,Chen T..,Dong C..,Wang Y..,...&Xue L..(2020).Atmospheric nitrous acid (HONO) at a rural coastal site in North China: Seasonal variations and effects of biomass burning.ATMOSPHERIC ENVIRONMENT,229.
MLA	Gu R.,et al."Atmospheric nitrous acid (HONO) at a rural coastal site in North China: Seasonal variations and effects of biomass burning".ATMOSPHERIC ENVIRONMENT 229(2020).