Unraveling ocean $$\hbox {pCO}_{2}$$ pCO 2 dynamics in Northwest Greenland Fjords
Abstract We investigated the relative contributions of various factors that influence seasonal changes in sea surface partial pressure of $$\hbox {CO}_{2}$$ CO 2 ( $$\hbox {pCO}_{2}$$ pCO 2 , calculated from the measured pH and total alkalinity) in four regions of northwestern Greenland: Nares Strai...
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Nature Portfolio
2025-08-01
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| Online Access: | https://doi.org/10.1038/s41598-025-12720-1 |
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| author | Camille Hayatte Akhoudas Adam Ulfsbo Brett F. Thornton John W. Pohlman Lee-Gray Boze Martin Jakobsson Christian Stranne |
| author_facet | Camille Hayatte Akhoudas Adam Ulfsbo Brett F. Thornton John W. Pohlman Lee-Gray Boze Martin Jakobsson Christian Stranne |
| author_sort | Camille Hayatte Akhoudas |
| collection | DOAJ |
| description | Abstract We investigated the relative contributions of various factors that influence seasonal changes in sea surface partial pressure of $$\hbox {CO}_{2}$$ CO 2 ( $$\hbox {pCO}_{2}$$ pCO 2 , calculated from the measured pH and total alkalinity) in four regions of northwestern Greenland: Nares Strait, Lincoln Sea, Sherard Osborn and Petermann fjords. Using the temperature minimum layer as a proxy for winter conditions, we examined $$\hbox {pCO}_{2}$$ pCO 2 dynamics from the onset of sea-ice melt to summer. Our findings revealed significant spatial variability in $$\hbox {pCO}_{2}$$ pCO 2 , driven by differences in temperature, freshwater inputs, and biological activity. In particular, in Sherard Osborn Fjord substantial freshwater inputs and strong stratification were found to enhance $$\hbox {pCO}_{2}$$ pCO 2 accumulation, while in Petermann Fjord biological $$\hbox {CO}_{2}$$ CO 2 uptake was the main driver. This study, conducted in summer 2019, underscores the critical role of northwest Greenland’s coastal waters as a summer $$\hbox {CO}_{2}$$ CO 2 sink. It highlights the complex interplay of physical and biogeochemical processes in modulating $$\hbox {pCO}_{2}$$ pCO 2 , suggesting significant regional differences in $$\hbox {CO}_{2}$$ CO 2 dynamics between two neighboring fjords. |
| format | Article |
| id | doaj-art-5d44d52fa5714a71994e18c2bca68c0c |
| institution | DOAJ |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Nature Portfolio |
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| spelling | doaj-art-5d44d52fa5714a71994e18c2bca68c0c2025-08-20T03:04:33ZengNature PortfolioScientific Reports2045-23222025-08-0115111710.1038/s41598-025-12720-1Unraveling ocean $$\hbox {pCO}_{2}$$ pCO 2 dynamics in Northwest Greenland FjordsCamille Hayatte Akhoudas0Adam Ulfsbo1Brett F. Thornton2John W. Pohlman3Lee-Gray Boze4Martin Jakobsson5Christian Stranne6Department of Geological Sciences, Stockholm UniversityDepartment of Marine Sciences, University of GothenburgDepartment of Geological Sciences, Stockholm UniversityU.S. Geological Survey, Woods Hole Coastal and Marine Science CenterU.S. Geological Survey, Woods Hole Coastal and Marine Science CenterDepartment of Geological Sciences, Stockholm UniversityDepartment of Geological Sciences, Stockholm UniversityAbstract We investigated the relative contributions of various factors that influence seasonal changes in sea surface partial pressure of $$\hbox {CO}_{2}$$ CO 2 ( $$\hbox {pCO}_{2}$$ pCO 2 , calculated from the measured pH and total alkalinity) in four regions of northwestern Greenland: Nares Strait, Lincoln Sea, Sherard Osborn and Petermann fjords. Using the temperature minimum layer as a proxy for winter conditions, we examined $$\hbox {pCO}_{2}$$ pCO 2 dynamics from the onset of sea-ice melt to summer. Our findings revealed significant spatial variability in $$\hbox {pCO}_{2}$$ pCO 2 , driven by differences in temperature, freshwater inputs, and biological activity. In particular, in Sherard Osborn Fjord substantial freshwater inputs and strong stratification were found to enhance $$\hbox {pCO}_{2}$$ pCO 2 accumulation, while in Petermann Fjord biological $$\hbox {CO}_{2}$$ CO 2 uptake was the main driver. This study, conducted in summer 2019, underscores the critical role of northwest Greenland’s coastal waters as a summer $$\hbox {CO}_{2}$$ CO 2 sink. It highlights the complex interplay of physical and biogeochemical processes in modulating $$\hbox {pCO}_{2}$$ pCO 2 , suggesting significant regional differences in $$\hbox {CO}_{2}$$ CO 2 dynamics between two neighboring fjords.https://doi.org/10.1038/s41598-025-12720-1Greenland fjordsSurface ocean pCO2Freshwater input influenceBiological CO2 uptake |
| spellingShingle | Camille Hayatte Akhoudas Adam Ulfsbo Brett F. Thornton John W. Pohlman Lee-Gray Boze Martin Jakobsson Christian Stranne Unraveling ocean $$\hbox {pCO}_{2}$$ pCO 2 dynamics in Northwest Greenland Fjords Scientific Reports Greenland fjords Surface ocean pCO2 Freshwater input influence Biological CO2 uptake |
| title | Unraveling ocean $$\hbox {pCO}_{2}$$ pCO 2 dynamics in Northwest Greenland Fjords |
| title_full | Unraveling ocean $$\hbox {pCO}_{2}$$ pCO 2 dynamics in Northwest Greenland Fjords |
| title_fullStr | Unraveling ocean $$\hbox {pCO}_{2}$$ pCO 2 dynamics in Northwest Greenland Fjords |
| title_full_unstemmed | Unraveling ocean $$\hbox {pCO}_{2}$$ pCO 2 dynamics in Northwest Greenland Fjords |
| title_short | Unraveling ocean $$\hbox {pCO}_{2}$$ pCO 2 dynamics in Northwest Greenland Fjords |
| title_sort | unraveling ocean hbox pco 2 pco 2 dynamics in northwest greenland fjords |
| topic | Greenland fjords Surface ocean pCO2 Freshwater input influence Biological CO2 uptake |
| url | https://doi.org/10.1038/s41598-025-12720-1 |
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