Global oceanic emissions of nitrous oxide

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Abstract

The global N2O flux from the ocean to the atmosphere is calculated based on more than 60 000 expedition measurements of the N2O anomaly in surface water. The expedition data are extrapolated globally and coupled to daily air-sea gas transfer coefficients to estimate a global ocean source of about 4 (1.2-6.8) Tg N yr-1. The wide range of uncertainty in the source estimate arises mainly from uncertainties in the air-sea gas transfer coefficients and in the global extrapolation of the summertime-biased surface N2O data set. The strongest source is predicted from the 40-60°S latitude band. Strong emissions also are predicted from the northern Pacific Ocean, the equatorial upwelling zone, and coastal upwelling zones occurring predominantly in the tropical northern hemisphere. -from Authors

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Nevison, C. D., Weiss, R. F., & Erickson, D. J. (1995). Global oceanic emissions of nitrous oxide. Journal of Geophysical Research, 100(C8). https://doi.org/10.1029/95jc00684

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