气候变化领域集成服务门户(CCPortal): Declining precipitation acidity from H2SO4 and HNO3 across China inferred by OMI products

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DOI	10.1016/j.atmosenv.2020.117359
	Declining precipitation acidity from H2SO4 and HNO3 across China inferred by OMI products
	Zhang X.; Zhao L.; Xu J.; Chen D.; Wu X.; Cheng M.
发表日期	2020
ISSN	1352-2310
卷号	224
英文摘要	The long-term trend of precipitation acidity (PA) resulting from H2SO4 and HNO3 is analysed across China from 2005 to 2016 based on Ozone Monitoring Instrument (OMI) SO2 and NO2 columns, measured precipitation amounts, and ground measurements of SO42− and NO3− concentrations in precipitation. PA showed substantial variations across China, exhibiting an average of 0.88 keq ha−1 yr−1 in 2016. The spatial variation in SO42− deposition than that in NO3− deposition was closer to the spatial variation in PA, contributing 78.7% of the PA throughout China. Eastern China had significantly higher PA values than western China with four hotspots in the Yangtze River Delta (YRD) and Pearl River Delta (PRD), northern China (NC) and the Sichuan Basin (SCB). In eastern China, the PA values increased by 5.0% between 2005 and 2007 and then decreased by 34.3% in 2016, while the PA values in western China increased by 14.7% between 2005 and 2012 and then decreased by 2.0% in 2016. For the four hotspots, the SO42− to NO3− ratio (S/N) decreased; moreover, the PA decreased in NC, PRD and SCB but slightly increased in the YRD. © 2020 Elsevier Ltd
关键词	China OMI SO2 and NO2 columns Precipitation acidity
语种	英语
scopus关键词	Deposition; Nitrogen oxides; China; Ground measurements; Long-term trend; Ozone monitoring instruments; Pearl River delta; Spatial variations; Substantial variations; Yangtze river delta; Ultraviolet spectrometers; nitric acid; nitrogen dioxide; ozone; sulfur dioxide; sulfuric acid; acidity; atmospheric chemistry; nitric acid; precipitation (chemistry); spatial variation; sulfuric acid; acidity; Article; atmospheric deposition; China; environmental monitoring; measurement accuracy; precipitation; priority journal; river basin; troposphere; wet deposition; China; Guangdong; Sichuan Basin; Yangtze River; Zhujiang Delta
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/249299
作者单位	International Institute for Earth System Science, Nanjing University, Nanjing, 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China; Institute of Remote Sensing and Earth Science, Hangzhou Normal University, Hangzhou, 311121, China; Department of Geography and Planning, Queen's University, Kingston, ONK7L 3N6, Canada; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing, 10012, China
推荐引用方式 GB/T 7714	Zhang X.,Zhao L.,Xu J.,et al. Declining precipitation acidity from H2SO4 and HNO3 across China inferred by OMI products[J],2020,224.
APA	Zhang X.,Zhao L.,Xu J.,Chen D.,Wu X.,&Cheng M..(2020).Declining precipitation acidity from H2SO4 and HNO3 across China inferred by OMI products.ATMOSPHERIC ENVIRONMENT,224.
MLA	Zhang X.,et al."Declining precipitation acidity from H2SO4 and HNO3 across China inferred by OMI products".ATMOSPHERIC ENVIRONMENT 224(2020).