Articles | Volume 18, issue 2
https://doi.org/10.5194/acp-18-735-2018
https://doi.org/10.5194/acp-18-735-2018
Research article
 | 
22 Jan 2018
Research article |  | 22 Jan 2018

Top-down constraints on global N2O emissions at optimal resolution: application of a new dimension reduction technique

Kelley C. Wells, Dylan B. Millet, Nicolas Bousserez, Daven K. Henze, Timothy J. Griffis, Sreelekha Chaliyakunnel, Edward J. Dlugokencky, Eri Saikawa, Gao Xiang, Ronald G. Prinn, Simon O'Doherty, Dickon Young, Ray F. Weiss, Geoff S. Dutton, James W. Elkins, Paul B. Krummel, Ray Langenfelds, and L. Paul Steele

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Cited articles

Beirman, P., Rosen, C., Venterea, R., and Lamb, J.: Survey of nitrogen fertilizer use on corn in Minnesota, Agr. Syst., 109, 43–52, 2012.
Bocquet, M., Wu, L., and Chevallier, F.: Bayesian design of control space for optimal assimilation of observations. Part I: Consistent multiscale formalism, Q. J. Roy. Meteor. Soc., 137, 1340–1356, https://doi.org/10.1002/qj.837, 2011.
Bousserez, N. and Henze, D. K.: Optimal and scalable methods to approximate the solutions of large-scale Bayesian problems: theory and application to atmospheric inversions and data assimilation, accepted, https://doi.org/10.1002/qj.3209, 2017.
Bouwman, A. F.: Environmental science – nitrogen oxides and tropical agriculture, Nature, 392, 866–867, https://doi.org/10.1038/31809, 1998.
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This paper uses three different frameworks to derive nitrous oxide (N2O) emissions based on global surface observations. One of these frameworks employs a new approach that allows for fast computation and explores a larger solution space than other methods. Our results point to a few conclusions about the global N2O budget, including a larger contribution from tropical sources, an overestimate of natural soil emissions, and an underestimate of agricultural sources particularly in springtime.
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