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Historical and future storm surge around New Zealand: From the 19th century to the end of the 21st century

Abstract: We developed a new hindcast for storm surge at a 0.25° spatial scale for the whole New Zealand area using a statistical downscaling technique that links the mean local atmospheric conditions with the maximum storm surge levels at a daily scale. After validating the hindcast against sea level instrumental records from 17 tidal gauges around New Zealand, the same technique has been applied to obtain storm surge projections until 2,100 using different global climate models. The global climate models have been previously classified according to their ability to reproduce the past climatology in the studied area and seven models have been selected in order to explore their effect on storm surge projections. For the two representative Concentration Pathways studied, the projections indicate that the storm surge associated with the 50?years return period will increase in magnitude in the Southern areas while it will decrease in the Northern region. Even where a decreasing linear trend over the annual maxima is observed in the future time series, sporadic events of higher magnitude than the historical peaks can be.

 Fuente: International Journal of Climatology Int J Climatol. 2020;40:1512-1525

Editorial: John Wiley and Sons Ltd

 Año de publicación: 2020

Nº de páginas: 14

Tipo de publicación: Artículo de Revista

 DOI: 10.1002/joc.6283

ISSN: 0899-8418,1097-0088

Url de la publicación: https://rmets.onlinelibrary.wiley.com/doi/10.1002/joc.6283