DOI: 10.1016/j.atmosenv.2020.117359
论文题名: Declining precipitation acidity from H2SO4 and HNO3 across China inferred by OMI products
作者: Zhang X. ; Zhao L. ; Xu J. ; Chen D. ; Wu X. ; Cheng M.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 224 语种: 英语
英文关键词: 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
学科: China
; OMI SO2 and NO2 columns
; Precipitation acidity
中文摘要: 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 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160915
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
Zhang X.,Zhao L.,Xu J.,et al. Declining precipitation acidity from H2SO4 and HNO3 across China inferred by OMI products[J]. Atmospheric Environment,2020-01-01,224