  Extreme events, such as wave-storms, need to be characterized for coastal
infrastructure design purposes. Such description should contain information on
both the univariate behaviour and the joint-dependence of storm-variables.
These two aspects have been here addressed through generalized Pareto
distributions and hierarchical Archimedean copulas. A non-stationary model has
been used to highlight the relationship between these extreme events and
non-stationary climate. It has been applied to a Representative Concentration
Pathway 8.5 Climate-Change scenario, for a fetch-limited environment (Catalan
Coast). In the non-stationary model, all considered variables decrease in time,
except for storm-duration at the northern part of the Catalan Coast. The joint
distribution of storm variables presents cyclical fluctuations, with a stronger
influence of climate dynamics than of climate itself.
