ADGEO Advances in Geosciences ADGEO Adv. Geosci. 1680-7359 Copernicus Publications Göttingen, Germany 10.5194/adgeo-26-113-2010 Climate change in a Point-Over-Threshold model: an example on ocean-wave-storm hazard in NE Spain Tolosana-Delgado R. 1 Ortego M. I. 2 Egozcue J. J. 2 Sánchez-Arcilla A. 1 Universitat Politècnica de Catalunya, Laboratori d'Enginyeria Marítima, Barcelona, Spain Universitat Politècnica de Catalunya, Departament de Matemàtica Aplicada III, Barcelona, Spain 27 09 2010 26 113 117 Copyright: © 2010 R. Tolosana-Delgado et al. 2010 This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/ This article is available from https://adgeo.copernicus.org/articles/26/113/2010/adgeo-26-113-2010.html The full text article is available as a PDF file from https://adgeo.copernicus.org/articles/26/113/2010/adgeo-26-113-2010.pdf

A reparametrization of the Generalized Pareto Distribution is here proposed. It is suitable to parsimoniously check trend assumptions within a Point-Over-Threshold model of hazardous events. This is based on considerations about the scale of both the excesses of the event magnitudes and the distribution parameters. The usefulness of this approach is illustrated with a data set from two buoys, where hypotheses about the homogeneity of climate conditions and lack of trends are assessed.

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