1. Instituto Dom Luiz—IDL, University of Lisbon, Edifício C1, Piso 1, P-1749-016 Lisbon, Portugal. E-mail: luis.batista@ipma.pt
2. Instituto Português do Mar e da Atmosfera, IPMA, I. P., P-1749-077 Lisbon, Portugal
3. Institute of Geophysics, Center for Earth System Research and Sustainability, University of Hamburg, D-20146 Hamburg, Germany
4. Instituto Superior de Engenharia de Lisboa, ISEL, Instituto Politecnico de Lisboa, P-1959-007 Lisbon, Portugal
5. Institute of Geology, Center for Earth System Research and Sustainability, University of Hamburg, D-20146 Hamburg, Germany