Journal article
Global fjords as minor sources of nitrous oxide to the atmosphere
Geophysical research letters, Vol.52(4), pp.1-11
28/02/2025
Metrics
13 Record Views
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites
Abstract
We report high-resolution observations of N2O sea-air fluxes at six fjords spanning arctic, subarctic, and temperate climates. Icelandic and Swedish fjords were sources of N2O at 97.6 +/- 10.5 and 19.9 +/- 19.3 mu g N2O m-2 day-1, respectively. These fjords showed increasing N2O concentrations toward the head. In contrast, a Greenland fjord exhibited net N2O uptake at -8.3 +/- 7.8 mu g N2O m-2 day-1 with decreasing concentration toward the head of the fjord. Individual fjords appear to have unique N2O drivers such as temperature, salinity, chlorophyll, and pH but no overarching driver was identified across all fjords. In Icelandic and Swedish fjords, low oxygen in subsurface waters and aquaculture activities may have enhanced N2O emissions. Globally, fjords release 7.9 +/- 1.7 Gg N2O yr-1 to the atmosphere, which represents 2%-13% of global emissions from coastal ecosystems. These N2O emissions offset 3.5% of CO2 sequestration in fjords.
Details
- Title
- Global fjords as minor sources of nitrous oxide to the atmosphere
- Creators
- T. Politi - University of GothenburgY. Y. Yau - University of GothenburgI. R. Santos - University of GothenburgA. Cabral - University of GothenburgH. L. S. Cheung - University of GothenburgC. Majtenyi-Hill - University of GothenburgA. Ulfsbo - University of GothenburgA. Wahlin - University of GothenburgS. Bonaglia - University of Gothenburg
- Publication Details
- Geophysical research letters, Vol.52(4), pp.1-11
- Publisher
- Amer Geophysical Union
- Number of pages
- 11
- Grant note
- Swedish Research Council Vetenskapsradet; Swedish Research Council Lithuanian Research Council; Research Council of Lithuania (LMTLT) S-PD-22-49 / Lithuanian Research Council; Research Council of Lithuania (LMTLT) 2022-04710; 2020-00457 / Swedish Research Council Vetenskapsradet; Swedish Research Council
- Identifiers
- 991013262207702368
- Copyright
- © 2025. The Author(s). This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
- Academic Unit
- Faculty of Science and Engineering; National Marine Science Centre
- Language
- English
- Resource Type
- Journal article