Model Comparison and Quantification of Nitrous Oxide Emission and Mitigation Potential from Maize and Wheat Fields at a Global Scale

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cg.authorship.typesCGIAR and advanced research instituteen_US
cg.contributor.affiliationInternational Maize and Wheat Improvement Centeren_US
cg.contributor.affiliationCGIAR Research Program on Climate Change, Agriculture and Food Securityen_US
cg.contributor.affiliationCocoa Life Crop Science Technology Platform Mondelez UK R&D Limiteden_US
cg.contributor.affiliationUniversity of Aberdeenen_US
cg.contributor.crpClimate Change, Agriculture and Food Securityen_US
cg.contributor.crpMaizeen_US
cg.contributor.crpWheaten_US
cg.coverage.regionAfricaen_US
cg.coverage.regionAsiaen_US
cg.coverage.regionEastern Africaen_US
cg.coverage.regionLatin Americaen_US
cg.coverage.regionSouthern Asiaen_US
cg.coverage.regionSouth-eastern Asiaen_US
cg.coverage.regionWestern Africaen_US
cg.creator.identifierKindie Tesfaye: 0000-0002-7201-8053en_US
cg.creator.identifierTek Sapkota: 0000-0001-5311-0586en_US
cg.creator.identifierArun Khatri-Chhetri: 0000-0002-3811-0462en_US
cg.creator.identifierDawit Solomon: 0000-0002-6839-6801en_US
cg.creator.identifierClare Stirling: 0000-0002-0025-1542en_US
cg.identifier.doihttps://doi.org/10.1016/j.scitotenv.2021.146696en_US
cg.identifier.projectCCAFS: PII-EA_GCP4iLEDen_US
cg.identifier.projectCCAFS: PII-EA_GCP4Maizeen_US
cg.identifier.projectCCAFS: PII-FP3_CropNutrientGapen_US
cg.isijournalISI Journalen_US
cg.issn0048-9697en_US
cg.journalScience of the Total Environmenten_US
cg.reviewStatusPeer Reviewen_US
cg.subject.ccafsLOW EMISSIONS DEVELOPMENTen_US
cg.subject.ccafsDATA AND TOOLS FOR ANALYSIS AND PLANNINGen_US
cg.subject.impactAreaClimate adaptation and mitigationen_US
cg.volume782en_US
dc.contributor.authorTesfaye, Kindieen_US
dc.contributor.authorTakele, Robelen_US
dc.contributor.authorSapkota, Tek Bahaduren_US
dc.contributor.authorKhatri-Chhetri, Arunen_US
dc.contributor.authorSolomon, Dawiten_US
dc.contributor.authorStirling, Clareen_US
dc.contributor.authorAlbanito, Fabrizioen_US
dc.date.accessioned2021-04-05T20:48:44Zen_US
dc.date.available2021-04-05T20:48:44Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/113219en_US
dc.titleModel Comparison and Quantification of Nitrous Oxide Emission and Mitigation Potential from Maize and Wheat Fields at a Global Scaleen_US
dcterms.abstractMaize and wheat are major cereals that contribute two-thirds of the food energy intake globally. The two crops consume about 35% of the nitrogen (N) fertilizer used in agriculture and thereby contribute to fertilizer-induced nitrous oxide (N2O) emissions. Thus, estimation of spatially disaggregated N2O emissions from maize and wheat fields on a global scale could be useful for identifying emission and mitigation hotspots. It could also be needed for prioritizing mitigation options consistent with location-specific production and environmental goals. N2O emission from four models (CCAFS-MOT, IPCC Tier-I, IPCC Tier-II and Tropical N2O) using a standard gridded dataset from global maize and wheat fields were compared and their performance evaluated using measured N2O emission data points (777 globally distributed datapoints). The models were used to quantify spatially disaggregated N2O emission and mitigation potential from maize and wheat fields globally and the values were compared. Although the models differed in their performance of capturing the level of measured N2O emissions, they produced similar spatial patterns of annual N2O emissions from maize and wheat fields. Irrespective of the models, predicted N2O emissions per hectare were higher in some countries in East and South Asia, North America, and Western Europe, driven mainly by higher N application rates. The study indicated a substantial N2O abatement potential if application of excess N in the maize and wheat systems is reduced without compromising the yield of the crops through technological and crop management innovations. N2O mitigation potential is higher in those countries and regions where N application rates and current N2O emissions are already high. The estimated mitigation potentials are useful for hotspot countries to target fertilizer and crop management as one of the mitigation options in their Nationally Determined Contributions (NDCs) to the United Nations Framework Convention on Climate Change (UNFCCC).en_US
dcterms.accessRightsOpen Accessen_US
dcterms.bibliographicCitationTesfay K, Takele R, Sapkota TB, Khatri-Chhetri A, Solomon D, Stirling C, Albanito F. 2021. Model Comparison and Quantification of Nitrous Oxide Emission and Mitigation Potential from Maize and Wheat Fields at a Global Scale. Science of the Total Environment.en_US
dcterms.issued2021-08en_US
dcterms.languageenen_US
dcterms.licenseCC-BY-NC-ND-4.0en_US
dcterms.publisherElsevieren_US
dcterms.subjectclimate changeen_US
dcterms.subjectfood securityen_US
dcterms.subjectagricultureen_US
dcterms.subjectmaizeen_US
dcterms.subjectwheaten_US
dcterms.subjectgreenhouse gasesen_US
dcterms.subjectgreenhouse gas emissionsen_US
dcterms.typeJournal Articleen_US

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