1. Department of Physical and Technological Oceanography, Institut de Ciències del Mar, CSIC, 08003 Barcelona, Spain
2. Barcelona Expert Center on Remote Sensing, CSIC-UPC, 08003 Barcelona, Spain
3. Department of Applied Mathematics, Universidad Politécnica de Madrid, 28040 Madrid, Spain
4. National Institute of Aquatic Resources, Technical University of Denmark, DTU Aqua, 2800 Lyngby, Denmark
5. Departamento de Física, Universidad Las Palmas de Gran Canaria (ULPGC), 35017 Las Palmas de Gran Canaria, Spain
6. Nansen Environmental and Remote Sensing Center (NERSC) and Bjerknes Center for Climate Research, 5007 Bergen, Norway