MAIA, Natan; ALMEIDA, Luis Pedro; NICOLODI, João Luiz; CALLIARI, Lauro; CASTELLE, Bruno

doi:10.1016/j.rsma.2023.103131

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MAIA, Natan
Environnements et Paléoenvironnements OCéaniques [EPOC]

ALMEIDA, Luis Pedro

NICOLODI, João Luiz

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Regional Studies in Marine Science. 2023-12, vol. 66, p. 103131

Resumen en inglés

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.< Leer menos

Palabras clave en inglés

South Atlantic Ocean

Wave climate

Storm waves

long-term trends

interannual variability

Climate indices