Title: Global agriculture and nitrous oxide emissions
Authors: REAY D.s.DAVIDSON E.SMITH KeithSMITH PeteMELLILO JerryDENTENER FranciscusCRUTZEN Paul
Citation: NATURE GEOSCIENCE vol. Nature Climate Change no. 2 p. 410-416
Publisher: NATURE PUBLISHING GROUP
Publication Year: 2012
JRC N°: JRC69416
ISSN: 1752-0894
URI: http://www.nature.com/nclimate/journal/v2/n6/box/nclimate1458_BX1.html
http://publications.jrc.ec.europa.eu/repository/handle/JRC69416
DOI: 10.1038/nclimate1458
Type: Articles in Journals
Abstract: Nitrous oxide (N2O) is an important anthropogenic greenhouse gas and agriculture represents its largest source. It is at the heart of debates over the efficacy of biofuels, the climate-forcing impact of population growth, and the extent to which mitigation of non-CO2 emissions can help avoid dangerous climate change. Here we examine some of the major debates surrounding estimation of agricultural N2O sources, and the challenges of projecting and mitigating emissions in coming decades. We find that current flux estimates - using either top-down or bottom-up methods - are reasonably consistent at the global scale, but that a dearth of direct measurements in some areas makes national and sub-national estimates highly uncertain. We also highlight key uncertainties in projected emissions and demonstrate the potential for dietary choice and supply-chain mitigation.
JRC Institute:Institute for Environment and Sustainability

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