Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-13941-2017 |
Quantifying methane emissions from natural gas production in north-eastern Pennsylvania | |
Barkley, Zachary R.1; Lauvaux, Thomas1; Davis, Kenneth J.1; Deng, Aijun1; Miles, Natasha L.1; Richardson, Scott J.1; Cao, Yanni2; Sweeney, Colm3; Karion, Anna4; Smith, MacKenzie5; Kort, Eric A.6; Schwietzke, Stefan6; Murphy, Thomas7; Cervone, Guido2; Martins, Douglas8; Maasakkers, Joannes D.9 | |
2017-11-23 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:22 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Natural gas infrastructure releases methane (CH4), a potent greenhouse gas, into the atmosphere. The estimated emission rate associated with the production and transportation of natural gas is uncertain, hindering our understanding of its greenhouse footprint. This study presents a new application of inverse methodology for estimating regional emission rates from natural gas production and gathering facilities in north-eastern Pennsylvania. An inventory of CH4 emissions was compiled for major sources in Pennsylvania. This inventory served as input emission data for the Weather Research and Forecasting model with chemistry enabled (WRF-Chem), and atmospheric CH4 mole fraction fields were generated at 3 km resolution. Simulated atmospheric CH4 enhancements from WRF-Chem were compared to observations obtained from a 3-week flight campaign in May 2015. Modelled enhancements from sources not associated with upstream natural gas processes were assumed constant and known and therefore removed from the optimization procedure, creating a set of observed enhancements from natural gas only. Simulated emission rates from unconventional production were then adjusted to minimize the mismatch between aircraft observations and model-simulated mole fractions for 10 flights. To evaluate the method, an aircraft mass balance calculation was performed for four flights where conditions permitted its use. Using the model optimization approach, the weighted mean emission rate from unconventional natural gas production and gathering facilities in northeastern Pennsylvania approach is found to be 0.36% of total gas production, with a 2 sigma confidence interval between 0.27 and 0.45% of production. Similarly, the mean emission estimates using the aircraft mass balance approach are calculated to be 0.40% of regional natural gas production, with a 2 sigma confidence interval between 0.08 and 0.72% of production. These emission rates as a percent of production are lower than rates found in any other basin using a top-down methodology, and may be indicative of some characteristics of the basin that make sources from the north-eastern Marcellus region unique. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000441729200001 |
WOS关键词 | CONVECTIVE PARAMETERIZATION ; ATMOSPHERIC METHANE ; PRODUCTION SITES ; SUPER-EMITTERS ; UNITED-STATES ; MODEL ; INFRASTRUCTURE ; TRANSPORT ; ETHANE ; SYSTEM |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27267 |
专题 | 地球科学 |
作者单位 | 1.Penn State Univ, Dept Meteorol, 503 Walker Bldg, University Pk, PA 16802 USA; 2.Penn State Univ, Dept Geog, University Pk, PA 16802 USA; 3.Univ Colorado, NOAA, Earth Syst Res Lab, Boulder, CO 80305 USA; 4.NIST, Gaithersburg, MD 20899 USA; 5.Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA; 6.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO USA; 7.Penn State Univ, Marcellus Ctr Outreach & Res, University Pk, PA 16802 USA; 8.FLIR Syst, W Lafayette, IN 47906 USA; 9.Harvard Univ, Sch Engn & Appl Sci, Pierce Hall,29 Oxford St, Cambridge, MA 02138 USA |
推荐引用方式 GB/T 7714 | Barkley, Zachary R.,Lauvaux, Thomas,Davis, Kenneth J.,et al. Quantifying methane emissions from natural gas production in north-eastern Pennsylvania[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(22). |
APA | Barkley, Zachary R..,Lauvaux, Thomas.,Davis, Kenneth J..,Deng, Aijun.,Miles, Natasha L..,...&Maasakkers, Joannes D..(2017).Quantifying methane emissions from natural gas production in north-eastern Pennsylvania.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(22). |
MLA | Barkley, Zachary R.,et al."Quantifying methane emissions from natural gas production in north-eastern Pennsylvania".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.22(2017). |
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