1 23 Stochastic Environmental Research and Risk Assessment ISSN 1436-3240 Volume 27 Number 4 Stoch Environ Res Risk Assess (2013) 27:757-768 DOI 10.1007/s00477-012-0604-y Mixed extreme wave climate model for reanalysis databases R. Mínguez, A. Tomás, F. J. Méndez & R. Medina