globalchange  > 气候变化事实与影响
DOI: 10.1002/2017GB005759
Scopus记录号: 2-s2.0-85044181436
论文题名:
Nitrous Oxide Emissions Estimated With the CarbonTracker-Lagrange North American Regional Inversion Framework
作者: Nevison C; , Andrews A; , Thoning K; , Dlugokencky E; , Sweeney C; , Miller S; , Saikawa E; , Benmergui J; , Fischer M; , Mountain M; , Nehrkorn T
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2018
卷: 32, 期:3
起始页码: 463
结束页码: 485
语种: 英语
英文关键词: atmospheric inversion ; corn belt ; N fertilizer ; N2O yield ; nitrous oxide
英文摘要: North American nitrous oxide (N2O) emissions of 1.6 ± 0.3 Tg N/yr over 2008–2014 are estimated using the CarbonTracker-Lagrange regional inversion framework. The estimated N2O emissions are largely consistent with the EDGAR (Emission Database for Global Atmospheric Research) global inventory and with the results of global atmospheric inversions but offer more spatial and temporal detail over North America. Emissions are strongest from the Midwestern Corn/Soybean Belt, which accounts for nearly one third of the total North American N2O source. The emissions are maximum in spring/early summer, consistent with a nitrogen fertilizer-driven source, and also show a late winter spike suggestive of freeze-thaw effects. Interannual variability in emissions across the primary months of fertilizer application is positively correlated to mean precipitation. The estimated N2O flux from the Midwestern Corn/Soybean Belt and the more northerly United States/Canadian wheat belt corresponds to 4.2–4.6% and 2.2–3.0%, respectively, of total synthetic + organic N fertilizer applied to those regions. Consideration of nonagricultural sources and additional N inputs from soybean N2 fixation could reduce the N2O yield from the Midwestern Corn/Soybean Belt to ~2.2–2.4% of total N inputs. ©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/77661
Appears in Collections:气候变化事实与影响

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作者单位: University of Colorado Boulder/INSTAAR, Boulder, CO, United States; NOAA ESRL Global Monitoring Division, Boulder, CO, United States; Department of Global Ecology, Carnegie Institution for Science, Stanford, CA, United States; Department of Environmental Sciences, Emory University, Atlanta, GA, United States; Harvard John A. Paulson School of Engineering and Applied Sciences, Cambridge, MA, United States; Lawrence Berkeley National Laboratory, Berkeley, CA, United States; Atmospheric and Environmental Research, Lexington, MA, United States

Recommended Citation:
Nevison C,, Andrews A,, Thoning K,et al. Nitrous Oxide Emissions Estimated With the CarbonTracker-Lagrange North American Regional Inversion Framework[J]. Global Biogeochemical Cycles,2018-01-01,32(3)
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