Surface nitrification: a major uncertainty in marine N2O emissions.

Zamora, Lauren and Oschlies, Andreas (2014) Surface nitrification: a major uncertainty in marine N2O emissions. Open Access Geophysical Research Letters, 41 (12). pp. 4247-4253. DOI 10.1002/2014GL060556.

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Abstract

The ocean is responsible for up to a third of total global nitrous oxide (N2O) emissions, but uncertainties in emission rates of this potent greenhouse gas are high (>100%). Here we use a marine biogeochemical model to assess six major uncertainties in estimates of N2O production, thereby providing guidance in how future studies may most effectively reduce uncertainties in current and future marine N2O emissions. Potential surface N2O production from nitrification causes the largest uncertainty in N2O emissions (estimated up to ~1.6 Tg N yr-1, or 48% of modeled values), followed by the unknown oxygen concentration at which N2O production switches to N2O consumption (0.8 Tg N yr-1, or 24% of modeled values). Other uncertainties are minor, cumulatively changing regional emissions by <15%. If production of N2O by surface nitrification could be ruled out in future studies, uncertainties in marine N2O emissions would be halved.

Document Type: Article
Additional Information: WOS:000340294300019
Keywords: nitrous oxide; Pacific; emissions; nitrification
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
OceanRep > SFB 754 > B1
OceanRep > SFB 754
Kiel University
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1002/2014GL060556
ISSN: 0094-8276
Related URLs:
Projects: SOPRAN, SFB754, MEMENTO
Expeditions/Models/Experiments:
Date Deposited: 17 Jun 2014 09:00
Last Modified: 10 Apr 2017 08:36
URI: http://oceanrep.geomar.de/id/eprint/24751

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