气候变化领域集成服务门户(CCPortal): Nitrous Oxide Emissions Estimated With the CarbonTracker-Lagrange North American Regional Inversion Framework

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DOI	10.1002/2017GB005759
	Nitrous Oxide Emissions Estimated With the CarbonTracker-Lagrange North American Regional Inversion Framework
	Nevison C.; Andrews A.; Thoning K.; Dlugokencky E.; Sweeney C.; Miller S.; Saikawa E.; Benmergui J.; Fischer M.; Mountain M.; Nehrkorn T.
发表日期	2018
ISSN	0886-6236
EISSN	1944-9224
起始页码	463
结束页码	485
卷号	32 期号:3
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.
英文关键词	atmospheric inversion; corn belt; N fertilizer; N2O yield; nitrous oxide
语种	英语
scopus关键词	agricultural emission; crop yield; estimation method; fertilizer application; nitrogen; nitrous oxide; soybean; wheat; North America; United States; Glycine max; Triticum aestivum; Zea mays
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129851
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
推荐引用方式 GB/T 7714	Nevison C.,Andrews A.,Thoning K.,et al. Nitrous Oxide Emissions Estimated With the CarbonTracker-Lagrange North American Regional Inversion Framework[J],2018,32(3).
APA	Nevison C..,Andrews A..,Thoning K..,Dlugokencky E..,Sweeney C..,...&Nehrkorn T..(2018).Nitrous Oxide Emissions Estimated With the CarbonTracker-Lagrange North American Regional Inversion Framework.Global Biogeochemical Cycles,32(3).
MLA	Nevison C.,et al."Nitrous Oxide Emissions Estimated With the CarbonTracker-Lagrange North American Regional Inversion Framework".Global Biogeochemical Cycles 32.3(2018).