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Articles | Volume 23, issue 4
Articles | Volume 23, issue 4
https://doi.org/10.5194/bg-23-1515-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/bg-23-1515-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 4
Research article
 | 
25 Feb 2026
Research article |  | 25 Feb 2026

Nitrous oxide (N2O) in the sea surface microlayer and underlying water during a phytoplankton bloom: a mesocosm study

Ina Stoltenberg, Lea Lange, and Hermann W. Bange

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Short summary
In order to decipher the effect of a phytoplankton bloom on N2O, dissolved N2O was measured in the upper 1 mm of the water column (seasurface microlayer) and in the underlying water during a mesocosm study. N2O concentrations were slightly enriched in the microlayer compared to the underlying water and were apparently not affected by irradiation and a phytoplankton bloom. Our results indicate that the role of the surface microlayer for N2O cycling has been overlooked so far.
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