Balancing the N2O (Nitrous oxide) budgets: Constraints from two-isotope characterization

Kim, K.-R.; Joos, F.; Keller, M.; Matson, P.; Craig, H. (2000). Balancing the N2O (Nitrous oxide) budgets: Constraints from two-isotope characterization. In: Ham, J.; Baede, A. P. M.; Meyer, L. A.; Ybema, R. (eds.) Non-CO2 Greenhouse Gases: Scientific Understanding, Control and Implementation (pp. 179-184). Kluwer Academic Publishers 10.1007/978-94-015-9343-4_24

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The global budget of N2O still shows large uncertainty between the known rate of destruction in the stratosphere and the estimated rates of natural and anthropogenic production in soils and ocean. Two-isotope characterization approach was applied to provide additional constraints on global budgets of N2O. Nitrogen and oxygen isotopic characteristics of N2O from known major sources and reservoirs show that N2O in the atmosphere is controlled by the input from soils, exchanges of N2O between troposphere and stratosphere, and between troposphere and ocean. A simple model is constructed to evaluate the status of current isotopic data. Initial results show that isotopic characteristics of N2O can provide important constraints on closing global budget of N2O. The model was further extended to preindustrial era to estimate the isotopic composition of N2O during that time. The trend of isotopic signal in tropospheric N2O could be no less than 0.6 per mil per year since pre-industrial time, which deserves close attention for future researches.

Item Type:	Book Section (Book Chapter)
Division/Institute:	08 Faculty of Science > Physics Institute > Climate and Environmental Physics
UniBE Contributor:	Joos, Fortunat
Subjects:	500 Science > 530 Physics
ISBN:	978-0-7923-6199-2
Publisher:	Kluwer Academic Publishers
Language:	English
Submitter:	BORIS Import 2
Date Deposited:	19 Jul 2022 09:22
Last Modified:	05 Dec 2022 15:54
Publisher DOI:	10.1007/978-94-015-9343-4_24
URI:	https://boris.unibe.ch/id/eprint/160977