globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2298
论文题名:
Nocturnal loss and daytime source of nitrous acid through reactive uptake and displacement
作者: Vandenboer T.C.; Young C.J.; Talukdar R.K.; Markovic M.Z.; Brown S.S.; Roberts J.M.; Murphy J.G.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2015
卷: 8, 期:1
起始页码: 55
结束页码: 60
语种: 英语
Scopus关键词: atmospheric pollution ; displacement ; dust ; nitric acid ; nitrite ; oxidation ; photochemistry ; radical
英文摘要: The nature of daytime sources and night-time sinks of nitrous acid is a key uncertainty in understanding atmospheric oxidation and radical cycling. The accumulation of nitrous acid in the air has been observed to slow down during the night, implying the presence of a night-time sink. In addition, there may be a photochemical source of nitrous acid during the daytime. We used flow tube experiments, measurements of acid displacement efficiencies, and field monitoring of nitrous acid and nitrite concentrations to study the exchange of nitrous acid with soils. Here we show that nitrous acid can react with carbonates or soil at night and subsequently be displaced from soils during the day by air-to-soil transfer of hydrogen chloride and nitric acid, which are generated in the atmosphere photochemically. These processes provide a critical link between the sink of nitrous acid at night and its emission the following day. We conclude that the acid displacement process could contribute a substantial fraction of daytime nitrous acid emissions in numerous environments, including agricultural, urban and vegetated regions, and in any location subject to deposition of soil-derived mineral dust. © 2014 Macmillan Publishers Limited. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106198
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Department of Chemistry, University of Toronto, Toronto, ON, Canada; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Chemical Sciences Division, National Oceanic and Atmospheric Administration, Boulder, CO, United States; Department of Earth Science, Memorial University, St John's, NL, Canada; Department of Chemistry, Memorial University, St John's, NL, Canada; Air Quality Research Division, Environment Canada, Toronto, ON, Canada

Recommended Citation:
Vandenboer T.C.,Young C.J.,Talukdar R.K.,et al. Nocturnal loss and daytime source of nitrous acid through reactive uptake and displacement[J]. Nature Geoscience,2015-01-01,8(1)
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