Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD028851 |
Methane Emissions From the Baltimore-Washington Area Based on Airborne Observation: Comparison to Emissions Inventories | |
Ren, Xinrong1,2,3; Salmon, Olivia E.4; Hansford, Jonathan R.5; Ahn, Doyeon6; Hall, Dolly1; Benish, Sarah E.1; Stratton, Phillip R.1; He, Hao1,7; Sahu, Sayantan6; Grimes, Courtney6; Heimburger, Alexie M. F.4; Martin, Cory R.1; Cohen, Mark D.2; Stunder, Barbara2; Salawitch, Ross J.1,6,7; Ehrman, Sheryl H.8,9; Shepson, Paul B.4,10; Dickerson, Russell R.1,7 | |
2018-08-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:16页码:8869-8882 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Urban areas are responsible for a substantial fraction of anthropogenic emissions of greenhouse gases (GHGs) including methane (CH4), with the second largest anthropogenic direct radiative forcing relative to carbon dioxide (CO2). Quantification of urban CH4 emissions is important for establishing GHG mitigation policies. Comparison of observation-based and inventory-based urban CH4 emissions suggests possible improvements in estimating CH(4 )source emissions in urban environments. In this study, we quantify CH4 emissions from the Baltimore-Washington area based on the mass balance aircraft flight experiments conducted in Winters 2015 and 2016. The field measurement-based mean winter CH4 emission rates from this area were 8.66 +/- 4.17 kg/s in 2015 and 9.14 +/- 4.49 kg/s in 2016, which are 2.8 times the 2012 average U.S. GHG Inventory-based emission rate. The observed emission rate is 1.7 times that given in a population-apportioned state of Maryland inventory. Methane emission rates inferred from carbon monoxide (CO) and CO(2 )emission inventories and observed CH4/CO and CH4/CO2 enhancement ratios are similar to those from the mass balance approach. The observed ethane-to-methane ratios, with a mean value of 3.3% in Winter 2015 and 4.3% in Winter 2016, indicate that the urban natural gas system could be responsible for similar to 40-60% of total CH4 emissions from this area. Landfills also appear to be a major contributor, providing 25 +/- 15% of the total emissions for the region. Our study suggests there are grounds to reexamine the CH4 emissions estimates for the Baltimore-Washington area and to conduct flights in other seasons. Plain Language Summary In this study methane emission rates were estimated for the Baltimore-Washington region based on airborne observations. The inferred methane emission rate is greater than the national greenhouse gas inventory by a factor of 2.8. Reconciliation of the wide range of CH4 emissions estimates from landfills and the natural gas system is necessary. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445331900030 |
WOS关键词 | PIPELINE LEAKS ; OLD LANDFILL ; GAS ; TRANSPORT ; PRESSURE ; SITES ; MODEL |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/32392 |
专题 | 气候变化 |
作者单位 | 1.Univ Maryland, Dept Atmospher & Ocean Sci, College Pk, MD 20742 USA; 2.NOAA, Air Resources Lab, College Pk, MD 20740 USA; 3.Univ Maryland, Cooperat Inst Climate & Satellites, College Pk, MD 20742 USA; 4.Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA; 5.Univ Maryland, Dept Comp Sci, College Pk, MD 20742 USA; 6.Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA; 7.Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20742 USA; 8.Univ Maryland, Dept Chem & Biomol Engn, College Pk, MD 20742 USA; 9.San Jose State Univ, Coll Engn, San Jose, CA 95192 USA; 10.Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA |
推荐引用方式 GB/T 7714 | Ren, Xinrong,Salmon, Olivia E.,Hansford, Jonathan R.,et al. Methane Emissions From the Baltimore-Washington Area Based on Airborne Observation: Comparison to Emissions Inventories[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(16):8869-8882. |
APA | Ren, Xinrong.,Salmon, Olivia E..,Hansford, Jonathan R..,Ahn, Doyeon.,Hall, Dolly.,...&Dickerson, Russell R..(2018).Methane Emissions From the Baltimore-Washington Area Based on Airborne Observation: Comparison to Emissions Inventories.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(16),8869-8882. |
MLA | Ren, Xinrong,et al."Methane Emissions From the Baltimore-Washington Area Based on Airborne Observation: Comparison to Emissions Inventories".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.16(2018):8869-8882. |
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