Antonio Miguel P A Santos, Instituto Português do Mar e da Atmosfera, Lisboa, Portugal; IPMA-Portuguese Institute for the Oceans and Atmosphere/CCMAR-Center of Marine Sciences Univ. Algarve, Department of the Ocean and Marine Resources (DMRM), Lisbon, Portugal, Carlos Guedes Soares, CENTEC- Centre for Marine Technology and Ocean Engineering/IST-ID, Lisboa, Portugal, Anabela J. Carvalho, IPMA-Portuguese Institute for the Ocean and Atmosphere, Department of Meteorology and Geophysics (DMG), Lisboa, Portugal, Isabel Sousa Pinto, University of Porto, CIIMAR, Porto, Portugal and Antonio C. Oliveira, Transinsular-Transportes Marítimos Insulares, S.A. (Grupo E.T.E.), Lisboa, Portugal