Variability in the Northern North Atlantic and Arctic Oceans Across the Last Two Millennia: A Review

• Published in: Paleoceanography and Paleoclimatology
• Main Authors: Moffa‐sánchez, P., Moreno‐chamarro, E., Reynolds, D. J., Ortega, P., Cunningham, L., Swingedouw, Didier, Amrhein, D. E., Halfar, J., Jonkers, L., Jungclaus, J. H., Perner, K., Wanamaker, A., Yeager, S.
• Other Authors: Environnements et Paléoenvironnements OCéaniques (EPOC), Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), European Project: 727862,APPLICATE, European Project: 727852,Blue-Action(2016)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2019
• Subjects: [SDE]Environmental Sciences; Arctic; Nordic Seas; North Atlantic
• Online Access: https://hal.science/hal-04603433; https://hal.science/hal-04603433/document; https://hal.science/hal-04603433/file/Paleoceanog%20and%20Paleoclimatol%20-%202019%20-%20Moffa%E2%80%90S%C3%A1nchez%20-%20Variability%20in%20the%20Northern%20North%20Atlantic%20and%20Arctic%20Oceans%20Across.pdf; https://doi.org/10.1029/2018pa003508

International audience The climate of the last two millennia was characterized by decadal to multicentennial variations, which were recorded in terrestrial records and had important societal impacts. The cause of these climatic events is still under debate, but changes in the North Atlantic circulation have often been proposed to play an important role. In this review we compile available high-resolution paleoceanographic data sets from the northern North Atlantic and Nordic Seas. The records are grouped into regions related to modern ocean conditions, and their variability is discussed. We additionally discuss our current knowledge from modeling studies, with a specific focus on the dynamical changes that are not well inferred from the proxy records. An illustration is provided through the analysis of two climate model ensembles and an individual simulation of the last millennium. This review thereby provides an up-to-date paleoperspective on the North Atlantic multidecadal to multicentennial ocean variability across the last two millennia.