Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL082635 |
Large Fugitive Methane Emissions From Urban Centers Along the US East Coast | |
Plant, Genevieve1; Kort, Eric A.1; Floerchinger, Cody2; Gvakharia, Alexander1; Vimont, Isaac3; Sweeney, Colm3 | |
2019-07-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:14页码:8500-8507 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Urban emissions remain an underexamined part of the methane budget. Here we present and interpret aircraft observations of six old and leak-prone major cities along the East Coast of the United States. We use direct observations of methane (CH4), carbon dioxide (CO2), carbon monoxide (CO), ethane (C2H6), and their correlations to quantify CH4 emissions and attribute to natural gas. We find the five largest cities emit 0.85 (0.63, 1.12) Tg CH4/year, of which 0.75 (0.49, 1.10) Tg CH4/year is attributed to natural gas. Our estimates, which include all thermogenic methane sources including end use, are more than twice that reported in the most recent gridded EPA inventory, which does not include end-use emissions. These results highlight that current urban inventory estimates of natural gas emissions are substantially low, either due to underestimates of leakage, lack of inclusion of end-use emissions, or some combination thereof. Plain Language Summary Recent efforts to quantify fugitive methane associated with the oil and gas sector, with a particular focus on production, have resulted in significant revisions upward of emission estimates. In comparison, however, there has been limited focus on urban methane emissions. Given the volume of gas distributed and used in cities, urban losses can impact national-level emissions. In this study we use aircraft observations of methane, carbon dioxide, carbon monoxide, and ethane to determine characteristic correlation slopes, enabling quantification of urban methane emissions and attribution to natural gas. We sample nearly 12% of the U.S. population and 4 of the 10 most populous cities, focusing on older, leak-prone urban centers. Emission estimates are more than twice the total in the U.S. EPA inventory for these regions and are predominantly attributed to fugitive natural gas losses. Current estimates for methane emissions from the natural gas supply chain appear to require revision upward, in part possibly by including end-use emissions, to account for these urban losses. |
英文关键词 | methane aircraft observations urban emissions |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000481818900069 |
WOS关键词 | NATURAL-GAS PRODUCTION ; LOS-ANGELES ; ANTHROPOGENIC EMISSIONS ; OZONE POLLUTION ; PIPELINE LEAKS ; 4 CORNERS ; WASHINGTON ; REGION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/185332 |
专题 | 气候变化 |
作者单位 | 1.Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA; 2.Harvard Univ, Earth & Planetary Sci, Cambridge, MA 02138 USA; 3.NOAA, Global Monitoring Div, Earth Syst Res Lab, Boulder, CO USA |
推荐引用方式 GB/T 7714 | Plant, Genevieve,Kort, Eric A.,Floerchinger, Cody,et al. Large Fugitive Methane Emissions From Urban Centers Along the US East Coast[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(14):8500-8507. |
APA | Plant, Genevieve,Kort, Eric A.,Floerchinger, Cody,Gvakharia, Alexander,Vimont, Isaac,&Sweeney, Colm.(2019).Large Fugitive Methane Emissions From Urban Centers Along the US East Coast.GEOPHYSICAL RESEARCH LETTERS,46(14),8500-8507. |
MLA | Plant, Genevieve,et al."Large Fugitive Methane Emissions From Urban Centers Along the US East Coast".GEOPHYSICAL RESEARCH LETTERS 46.14(2019):8500-8507. |
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