Isotopomer labeling and oxygen dependence of hybrid nitrous oxide production

Kelly, Colette L.; Travis, Nicole M.; Baya, Pascale Anabelle; Frey, Claudia; Sun, Xin; Ward, Bess B.; Casciotti, Karen L.

doi:https://doi.org/10.5194/bg-21-3215-2024

Articles | Volume 21, issue 14

https://doi.org/10.5194/bg-21-3215-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Low-oxygen environments and deoxygenation in open and coastal...

https://doi.org/10.5194/bg-21-3215-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 14

Research article

| Highlight paper

|

17 Jul 2024

Research article | Highlight paper |

| 17 Jul 2024

Isotopomer labeling and oxygen dependence of hybrid nitrous oxide production

Colette L. Kelly, Nicole M. Travis, Pascale Anabelle Baya, Claudia Frey, Xin Sun, Bess B. Ward, and Karen L. Casciotti

Supplement

https://doi.org/10.5194/bg-21-3215-2024-supplement

Data sets

Data in support of "Isotopomer labeling and oxygen dependence of hybrid nitrous oxide production'' from the Eastern Tropical North Pacific C. L. Kelly and K. L. Casciotti https://doi.org/10.25740/ss974md4840

Model code and software

ckelly314/isotopomer-soup: Second release of isotopomer-soup Colette L. Kelly https://doi.org/10.5281/zenodo.11475416

ckelly314/pyisotopomer Colette L. Kelly https://doi.org/10.5281/zenodo.7552724

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Short summary

Nitrous oxide, a potent greenhouse gas, accumulates in regions of the ocean that are low in dissolved oxygen. We used a novel combination of chemical tracers to determine how nitrous oxide is produced in one of these regions, the eastern tropical North Pacific Ocean. Our experiments showed that the two most important sources of nitrous oxide under low-oxygen conditions are denitrification, an anaerobic process, and a novel “hybrid” process performed by ammonia-oxidizing archaea.