气候变化领域集成服务门户(CCPortal): Enhanced Wet Deposition of Water-Soluble Organic Nitrogen During the Harvest Season: Influence of Biomass Burning and In-Cloud Scavenging

CCPortal

DOI	10.1029/2020JD032699
	Enhanced Wet Deposition of Water-Soluble Organic Nitrogen During the Harvest Season: Influence of Biomass Burning and In-Cloud Scavenging
	Yu X.; Li D.; Li D.; Zhang G.; Zhou H.; Li S.; Song W.; Zhang Y.; Bi X.; Yu J.; Wang X.
发表日期	2020
ISSN	2169897X
卷号	125 期号:18
英文摘要	Globally water-soluble organic nitrogen (WSON) accounts for about one third of water-soluble total nitrogen in atmospheric deposition, yet the key factors influencing WSON deposition remain uncertain. In the present study, precipitation and aerosol samples were collected during 2016–2018 at a forest site in the Pearl River Delta, south China. Rainwater WSON concentrations were found to elevate significantly during fall, and wet deposition of WSON during fall could account for about 50% of its annual total wet deposition. The wet deposition and rainwater concentrations of K+ and levoglucosan, which are tracers for biomass burning emissions, also increased substantially during fall. The average WSON/water-soluble total nitrogen ratio in precipitations (0.48) was over two times higher than that in aerosols (0.20) during fall, while during other seasons, the ratios in precipitations (0.17) and in aerosols (0.19) were comparable. Moreover, concentrations of WSON in rainwater, unlike that of inorganic N, did not decrease significantly with the increase of precipitation amount during fall. These results suggested that enhanced biomass burning during fall (harvest season) might be an important source of in-cloud WSON, and in-cloud scavenging, instead of below-cloud washout, likely contributed remarkably to the wet deposition of WSON. ©2020. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences.
英文关键词	biomass burning; in-cloud process; nitrogen deposition; water-soluble organic nitrogen
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185734
作者单位	State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China; Resource and Environmental College, University of Chinese Academy of Sciences, Beijing, China; Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China; Department of Chemistry, Hong Kong University of Science & Technology, Hong Kong
推荐引用方式 GB/T 7714	Yu X.,Li D.,Li D.,et al. Enhanced Wet Deposition of Water-Soluble Organic Nitrogen During the Harvest Season: Influence of Biomass Burning and In-Cloud Scavenging[J],2020,125(18).
APA	Yu X..,Li D..,Li D..,Zhang G..,Zhou H..,...&Wang X..(2020).Enhanced Wet Deposition of Water-Soluble Organic Nitrogen During the Harvest Season: Influence of Biomass Burning and In-Cloud Scavenging.Journal of Geophysical Research: Atmospheres,125(18).
MLA	Yu X.,et al."Enhanced Wet Deposition of Water-Soluble Organic Nitrogen During the Harvest Season: Influence of Biomass Burning and In-Cloud Scavenging".Journal of Geophysical Research: Atmospheres 125.18(2020).