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Poster (Scientific congresses and symposiums)
Nitrous oxide dynamics in the Arctic Siberian shelves of the North Kara Sea during summer 2021
Muller, Sofia; Fripiat, François; Martínez-Garcia, Alfredo et al.
2024EGU General Assembly 2024
 

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Abstract :
[en] Nitrous oxide (N2O) distribution in the North Kara Sea during summer 2021 shows elevated N2O concentrations in shelf water masses, highlighting the significance of coupled benthic-pelagic and nitrification-denitrification processes. In surface waters, temperature emerges as the primary driver of N2O concentrations, with a clear negative correlation between both parameters. Most surface waters are near saturation for N2O, and the saturation deficit exhibits an inverse relationship with temperature. Under-ice water influx originating from the open ocean exhibits strong under-saturation (80%), attributed to the limited air-sea exchange in sea ice covered waters. Contrary to expectations, river supply does not exert a discernable influence on N2O concentrations in the studied area. This study reveals the potential of the Arctic Siberian shelves for the uptake of atmospheric N2O during summer.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Muller, Sofia  ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Chemical Oceanography Unit (COU)
Fripiat, François 
Martínez-Garcia, Alfredo
Jaccard, Samuel L. 
Hölemann, Jens A. 
Delille, Bruno  ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO)
Language :
English
Title :
Nitrous oxide dynamics in the Arctic Siberian shelves of the North Kara Sea during summer 2021
Publication date :
09 March 2024
Event name :
EGU General Assembly 2024
Event place :
Vienne, Austria
Event date :
14/04/2024 to 19/04/2024
Audience :
International
Available on ORBi :
since 02 May 2024

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