Chaotic Intrinsic Variability in the Arctic‐North Atlantic Ocean and Its Link to Sea Ice
Abstract We provide the first quantification of chaotic intrinsic variability (CIV) in the Arctic‐North Atlantic region, using an ensemble of 13 eddy‐permitting ocean–sea ice simulations. By isolating oceanic CIV from atmospheric variability, we show that CIV contributes 20%–60% of sea surface temperature interannual variability in the northern North Atlantic at the Arctic gateways, with a greater influence at subsurface levels. Salinity CIV accounts for 20%–50% of interannual variability, particularly in the Arctic. Furthermore, CIV contributes to a notable portion of sea ice concentration interannual variability in the marginal ice zone, likely influenced by dynamical interactions between sea ice and small‐scale features. CIV is shown to emerge in preferential regions, with its seasonal amplitude modulated by sea ice conditions. Given the potential for CIV to amplify in a warming Arctic, understanding its role in ocean and sea ice variability under changing climate conditions is crucial for improving predictions in this region.
Authors
- Claude Talandier (ORCID: https://orcid.org/0000-0002-9468-7418)
- Éric Maisonnave
- Camille Lique (ORCID: https://orcid.org/0000-0002-8357-4928)
- Rym Msadek (ORCID: https://orcid.org/0000-0003-0450-4815)
- Thierry Penduff (ORCID: https://orcid.org/0000-0002-0407-8564)
- Camille Le Gloannec
Institutions
- Institut polytechnique de Grenoble (FR)
- Centre National de la Recherche Scientifique (FR)
- Ifremer (FR)
- Université de Bretagne Occidentale (FR)
- Université Fédérale de Toulouse Midi-Pyrénées (FR)
- Sorbonne Université (FR)
- Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement (FR)
- Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (FR)
- Institut des Géosciences de l'Environnement (FR)
- Laboratory for Ocean Physics and Satellite Remote Sensing (FR)
- Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (FR)
- Institut Universitaire Européen de la Mer (FR)
- Institut de Recherche pour le Développement (FR)
- Université Grenoble Alpes (FR)
Publication Details
- Journal
- Geophysical Research Letters
- Published
- 2025-05-30
- DOI
- https://doi.org/10.1029/2024gl113318
- Citations
- 1
- Primary Topic
- Arctic and Antarctic ice dynamics
- Type
- article
- Field-Weighted Citation Impact
- 1.30