globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50413
论文题名:
Quantifying sources of methane using light alkanes in the Los Angeles basin, California
作者: Peischl J.; Ryerson T.B.; Brioude J.; Aikin K.C.; Andrews A.E.; Atlas E.; Blake D.; Daube B.C.; De Gouw J.A.; Dlugokencky E.; Frost G.J.; Gentner D.R.; Gilman J.B.; Goldstein A.H.; Harley R.A.; Holloway J.S.; Kofler J.; Kuster W.C.; Lang P.M.; Novelli P.C.; Santoni G.W.; Trainer M.; Wofsy S.C.; Parrish D.D.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:10
起始页码: 4974
结束页码: 4990
语种: 英语
英文关键词: alkanes ; emission ; Los Angeles ; methane
Scopus关键词: Carbon monoxide ; Gas industry ; Geographical distribution ; Greenhouse gases ; Land fill ; Methane ; Natural gas ; Neutron emission ; Paraffins ; Particulate emissions ; Population statistics ; Airborne measurements ; California Air Resources Board ; Greenhouse gas inventory ; Los angeles ; Los Angeles Basin ; Oil and Gas Industry ; Relative contribution ; Urban distribution systems ; Carbon dioxide ; carbon dioxide ; carbon emission ; carbon monoxide ; data acquisition ; emission inventory ; gas industry ; greenhouse effect ; greenhouse gas ; landfill ; methane ; natural gas ; California ; Chino Basin ; Los Angeles Basin ; United States
英文摘要: Methane (CH4), carbon dioxide (CO2), carbon monoxide (CO), and C2-C5 alkanes were measured throughout the Los Angeles (L.A.) basin in May and June 2010. We use these data to show that the emission ratios of CH4/CO and CH4/CO2 in the L.A. basin are larger than expected from population-apportioned bottom-up state inventories, consistent with previously published work. We use experimentally determined CH4/CO and CH4/CO2 emission ratios in combination with annual State of California CO and CO2 inventories to derive a yearly emission rate of CH4 to the L.A. basin. We further use the airborne measurements to directly derive CH4 emission rates from dairy operations in Chino, and from the two largest landfills in the L.A. basin, and show these sources are accurately represented in the California Air Resources Board greenhouse gas inventory for CH4. We then use measurements of C2-C5 alkanes to quantify the relative contribution of other CH4 sources in the L.A. basin, with results differing from those of previous studies. The atmospheric data are consistent with the majority of CH4 emissions in the region coming from fugitive losses from natural gas in pipelines and urban distribution systems and/or geologic seeps, as well as landfills and dairies. The local oil and gas industry also provides a significant source of CH4 in the area. The addition of CH4 emissions from natural gas pipelines and urban distribution systems and/or geologic seeps and from the local oil and gas industry is sufficient to account for the differences between the top-down and bottom-up CH4 inventories identified in previously published work. Key PointsTop-down estimates of CH4 emissions in L.A. are greater than inventory estimatesEstimates of CH4 emissions from landfills in L.A. agree with CARB inventoryPipeline natural gas and/or seeps, and landfills are main sources of CH4 in L.A. ©2013. American Geophysical Union. All Rights Reserved.
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被引频次[WOS]:155   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63765
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder CO, United States; Chemical Sciences Division, National Oceanic and Atmospheric Administration, Earth System Research Laboratory, Boulder, CO, United States; Global Monitoring Division, National Oceanic and Atmospheric Administration, Earth System Research Laboratory, Boulder CO, United States; Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami FL, United States; Department of Chemistry, University of California, Irvine CA, United States; School of Engineering and Applied Science, Department of Earth and Planetary Sciences, Harvard University, Cambridge MA, United States; Department of Civil and Environmental Engineering, University of California, Berkeley CA, United States; Department of Environmental Science, Policy, and Management, University of California, Berkeley CA, United States

Recommended Citation:
Peischl J.,Ryerson T.B.,Brioude J.,et al. Quantifying sources of methane using light alkanes in the Los Angeles basin, California[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(10)
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