globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1920068117
论文题名:
Ammonia emission abatement does not fully control reduced forms of nitrogen deposition
作者: Tan J.; Fu J.S.; Seinfeld J.H.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:18
起始页码: 9771
结束页码: 9775
语种: 英语
英文关键词: Ammonia emission ; Emission control strategy ; Nitrogen deposition ; Reduced forms of nitrogen
Scopus关键词: ammonia ; acidity ; Article ; concentration (parameter) ; dry deposition ; humidity ; nitrogen deposition ; precipitation ; priority journal ; reduction (chemistry) ; wet deposition
英文摘要: Human activities and population growth have increased the natural burden of reactive nitrogen (N) in the environment. Excessive N deposition on Earth’s surface leads to adverse feed-backs on ecosystems and humans. Similar to that of air pollution, emission control is recognized as an efficient means to control acid deposition. Control of nitrogen oxides (NOx = NO + NO2) emissions has led to reduction in deposition of oxidized nitrogen (NOy, the sum of all oxidized nitrogen species, except nitrous oxide [N2O]). Reduced forms of nitrogen (NHx = ammonia [NH3] + ammonium [NH4 +]) deposition have, otherwise, increased, offsetting the benefit of reduction in NOy deposition. Stringent control of NH3 emissions is being considered. In this study, we assess the response of N deposition to N emission control on continental regions. We show that significant reduction of NHx deposition is unlikely to be achieved at the early stages of implementing NH3 emission abatement. Per-unit NH3 emission abatement is shown to result in only 60–80% reduction in NHx deposition, which is significantly lower than the demonstrated 80–120% benefit of controlling NOx emissions on NOy deposition. This 60–80% effectiveness of NHx deposition reduction per unit NH3 emission abatement reflects, in part, the effects of simultaneous reductions in NOx and SO2 emissions. © 2020 National Academy of Sciences. 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/164222
Appears in Collections:气候变化与战略

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作者单位: Tan, J., Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, TN 37996, United States; Fu, J.S., Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, TN 37996, United States, Computational Earth Sciences Group, Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States; Seinfeld, J.H., Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, United States

Recommended Citation:
Tan J.,Fu J.S.,Seinfeld J.H.. Ammonia emission abatement does not fully control reduced forms of nitrogen deposition[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(18)
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