Long-term trends and wave climate variability in the South Atlantic Ocean: the influence of climate indices - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Regional Studies in Marine Science Année : 2023

Long-term trends and wave climate variability in the South Atlantic Ocean: the influence of climate indices

Natan Maia
Luis Pedro Almeida
  • Fonction : Auteur
João Luiz Nicolodi
  • Fonction : Auteur
Lauro Calliari
  • Fonction : Auteur

Résumé

Linking wave climate variability and trends with climate indices is important to better understand and predict large-scale patterns of wave variability down to wave conditions at the coast. This study investigates such links in the South Atlantic Ocean using 72 years of ERA5 wave hindcast. Different wave parameters are computed, including storm wave statistics, and are further analyzed in terms of long-term trends and interannual changes. Our results indicate that, over the last decades, wave height has been significantly increasing across the entire domain, while extreme events statistics are also increasing, although with more complex spatial variability. The variations of these wave properties are primarily correlated, from low to high latitudes, with the Atlantic Multidecadal Oscillation (AMO), Tropical Southern Atlantic Index (TSA) and Southern Annular Mode (SAM), with different preferred timescales. We think that better understanding and predicting the evolution of these climate indices, including under climate change, will be critical to anticipate coastal hazards in this region.
Fichier principal
Vignette du fichier
Maia et al 2023_submission.pdf (1.19 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04266991 , version 1 (01-11-2023)

Identifiants

Citer

Natan Maia, Luis Pedro Almeida, João Luiz Nicolodi, Lauro Calliari, Bruno Castelle. Long-term trends and wave climate variability in the South Atlantic Ocean: the influence of climate indices. Regional Studies in Marine Science, 2023, 66, pp.103131. ⟨10.1016/j.rsma.2023.103131⟩. ⟨hal-04266991⟩

Collections

INSU EPHE CNRS PSL
19 Consultations
43 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More