globalchange  > 气候减缓与适应
DOI: 10.1029/2017JD027881
Scopus记录号: 2-s2.0-85046280991
论文题名:
Top-Down Constraints on Anthropogenic CO2 Emissions Within an Agricultural-Urban Landscape
作者: Hu C.; Griffis T.J.; Lee X.; Millet D.B.; Chen Z.; Baker J.M.; Xiao K.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:9
起始页码: 4674
结束页码: 4694
语种: 英语
英文关键词: agriculture ; anthropogenic CO2 emissions ; carbon isotope ratios ; inverse modeling ; tall tower ; U.S. Corn Belt
Scopus关键词: agricultural land ; anthropogenic effect ; anthropogenic source ; carbon dioxide ; carbon emission ; carbon isotope ratio ; emission inventory ; greenhouse gas ; heating ; mixing ratio ; natural gas ; radiative forcing ; urban area ; Minnesota ; Saint Paul ; United States ; United States ; Zea mays
英文摘要: Anthropogenic carbon dioxide (CO2) emissions dominate the atmospheric greenhouse gas radiative forcing budget. However, these emissions are poorly constrained at the regional (102–106 km2) and seasonal scales. Here we use a combination of tall tower CO2 mixing ratio and carbon isotope ratio observations and inverse modeling techniques to constrain anthropogenic CO2 emissions within a highly heterogeneous agricultural landscape near Saint Paul, Minnesota, in the Upper Midwestern United States. The analyses indicate that anthropogenic emissions contributed 6.6, 6.8, and 7.4 μmol/mol annual CO2 enhancements (i.e., departures from the background values) in 2008, 2009, and 2010, respectively. Oil refinery, the energy industry (power and heat generation), and residential emissions (home heating and cooking) contributed 2.9 (42.5%), 1.4 (19.8%), and 1.1 μmol/mol (15.8%) of the total anthropogenic enhancement over the 3-year period according to a priori inventories. The total anthropogenic signal was further partitioned into CO2 emissions derived from fuel oil, natural gas, coal, gasoline, and diesel consumption using inverse modeling and carbon isotope ratio analyses. The results indicate that fuel oil and natural gas consumption accounted for 52.5% of the anthropogenic CO2 sources in winter. Here the a posteriori CO2 emission from natural gas was 79.0 ± 4.1% (a priori 20.0%) and accounted for 63% of the total CO2 enhancement including both biological and anthropogenic sources. The a posteriori CO2 emission from fuel oil was 8.4 ± 3.8% (a priori 32.5%)—suggesting a more important role of residential heating in winter. The modeled carbon isotope ratio of the CO2 source (δ13Cs, −29.3 ± 0.4‰) was relatively more enriched in 13C-CO2 compared to that derived from Miller-Tans plot analyses (−35.5‰ to −34.8‰), supporting that natural gas consumption was underestimated for this region. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113902
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作者单位: Department of Soil, Water, and Climate, University of Minnesota,Twin Cities, St. Paul, MN, United States; School of Forestry and Environmental Studies, Yale University, New Haven, CT, United States; Yale-NUIST Center on Atmospheric Environment, Nanjing University of Information Science and Technology, Nanjing, China; U.S. Department of Agriculture-Agricultural Research Service, St. Paul, MN, United States

Recommended Citation:
Hu C.,Griffis T.J.,Lee X.,et al. Top-Down Constraints on Anthropogenic CO2 Emissions Within an Agricultural-Urban Landscape[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(9)
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