气候变化领域集成服务门户(CCPortal): Quantifying atmospheric reactive nitrogen concentrations, dry deposition, and isotope dynamics surrounding a Marcellus Shale well pad

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DOI	10.1016/j.atmosenv.2019.117196
	Quantifying atmospheric reactive nitrogen concentrations, dry deposition, and isotope dynamics surrounding a Marcellus Shale well pad
	Coughlin J.G.; Elliott E.M.; Rose L.A.; Pekney N.J.; Reeder M.
发表日期	2020
ISSN	1352-2310
卷号	223
英文摘要	Unconventional natural gas (UNG) extraction activities have become important contributors to regional NOx emissions inventories. Currently, there is a knowledge gap in the amount of total N deposition surrounding well pads undergoing UNG extraction despite the fact that some areas with extensive natural gas extraction activity are already in exceedance of nitrogen critical loads. In this study, we measured the magnitude of total dry N deposition from NO2, HNO3, and NH3 attributable to the development of two UNG wells at a Marcellus Shale well pad study site. This study documents concentrations, deposition fluxes, and isotope values of NO2, HNO3, O3, and NH3 up- and down-wind along a 750-m well pad passive sampling transect across a 16-acre well pad containing two unconventional wells during all phases of development and extraction comprising fifteen distinct sampling periods. An access road transect was also utilized to explore reactive N dynamics in a near-road environment on the well pad where NO2 concentration and isotope dynamics were highly correlated with daily traffic count (r2 = 0.78–0.88, p < 0.01). An onsite chemiluminescent NO2 source apportionment model was compared against δ15N–NO2 and δ18O–NO2 source apportionment models (r2 = 0.57 and 0.82 respectively), demonstrating the possible utility of δ18O–NO2 as a source apportionment tool in near-source environments. In addition, the δ15N–NO2 source apportionment method compared well against a background-subtraction method (slope = 0.82, r2 = 0.88, p < 0.001) during non-wintertime conditions and was used to find N loadings directly attributable to well pad activities. In total, the total N deposition across the transect, attributable to well pad activities, utilizing industry's best management practices, ranged from 0.16 to 0.55 kg N ha−1 yr−1. This magnitude of well pad attributable N deposition is high enough to result in exceedances of nitrogen critical loads in areas with high well count densities and high baseline N deposition. © 2019 Elsevier Ltd
关键词	Atmospheric chemistry Marcellus shale Nitrogen deposition Reactive nitrogen Stable isotope
语种	英语
scopus关键词	Ammonia; Atmospheric chemistry; Dynamics; Extraction; Gas emissions; Isotopes; Natural gas; Nitrogen; Nitrogen oxides; Roads and streets; Shale; Shale gas; Background subtraction method; Best management practices; Marcellus shales; Natural gas extraction; Nitrogen deposition; Reactive nitrogen; Stable isotopes; Unconventional natural gas; Natural gas wells; ammonia; fossil fuel; natural gas; nitric acid; nitrogen oxide; ozone; stable isotope; concentration (composition); dry deposition; emission inventory; isotopic analysis; natural gas; nitric oxide; quantitative analysis; source apportionment; air monitoring; air sampling; ambient air; atmospheric deposition; chemoluminescence; combustion; comparative study; dry deposition; fracking; highway; isotope analysis; meteorology; nitrogen concentration; nitrogen deposition; priority journal; wind speed
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/249383
作者单位	Department of Geology and Environmental Science, University of Pittsburgh, Pittsburgh, PA, United States; Department of Forest Resources, University of Minnesota, Saint Paul, MN, United States; U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, PA, United States; AECOM, Pittsburgh, PA, United States
推荐引用方式 GB/T 7714	Coughlin J.G.,Elliott E.M.,Rose L.A.,et al. Quantifying atmospheric reactive nitrogen concentrations, dry deposition, and isotope dynamics surrounding a Marcellus Shale well pad[J],2020,223.
APA	Coughlin J.G.,Elliott E.M.,Rose L.A.,Pekney N.J.,&Reeder M..(2020).Quantifying atmospheric reactive nitrogen concentrations, dry deposition, and isotope dynamics surrounding a Marcellus Shale well pad.ATMOSPHERIC ENVIRONMENT,223.
MLA	Coughlin J.G.,et al."Quantifying atmospheric reactive nitrogen concentrations, dry deposition, and isotope dynamics surrounding a Marcellus Shale well pad".ATMOSPHERIC ENVIRONMENT 223(2020).