Gemma Kulk¹, Shubha Sathyendranath², Meike Becker³, Dr. Marco Bellacicco, PhD⁴, Antonio Bonaduce⁵, Heather A. Bouman⁶, Andrei Chuprin⁷, Javier Alonso Concha⁸, Daniel Ford⁹, Johnny A. Johannessen⁵, Bror Jönsson, PhD¹⁰, Lekshmi Krishnakumary⁷, Tiit Kutser¹¹, Marko Laine¹², Dr. Mengyu Li¹³, Joan Llort, PhD¹⁴, Elin Meek⁷, David Moffat¹⁵, Are Olsen¹⁶, Emanuele Organelli⁴, Ralf Quast¹⁷, Roshin P. Raj⁵, Mayra Rodriguez¹⁸, Shovonlal Roy¹⁹, Roberto Sabia²⁰, Roman Shevchuk¹⁷, Jamie Shutler⁹, Valentina Sicardi²¹, Kaire Toming¹¹ and Tsuysohi Wakamatsu⁵, (1)Earth Observation Science & Applications, Plymouth Marine Laboratory, Plymouth, United Kingdom, (2)Plymouth Marine Laboratory, National Centre for Earth Observations, Plymouth, United Kingdom, (3)University of Bergen, Bergen, Norway, (4)Institute of Marine Sciences (ISMAR), National Research Council (CNR), Rome, Italy, (5)Nansen Environmental and Remote Sensing Center, Bergen, Norway, (6)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, (7)Plymouth Marine Laboratory, Plymouth, United Kingdom, (8)European Space Research Institute, European Space Agency, Frascati, Italy, (9)University of Exeter, Exeter, United Kingdom, (10)Plymouth Marine Laboratory, Earth Observation Science and Applications, Plymouth, United Kingdom, (11)Estonian Marine Institute, University of Tartu, Tartu, Estonia, (12)Finnish Meteorological Institute, Helsinki, Finland, (13)Institute of Marine Sciences (ISMAR), National Research Council of Italy (CNR), Rome, Italy, (14)Institut de Ciències del Mar, Barcelona, Spain, (15)Plymouth Marine Laboratory, Environmental Intelligence Group, Plymouth, United Kingdom, (16)University of Bergen, Geophysical Institute and Bjerknes Centre for Climate Research, Bergen, Norway, (17)Brockmann Consult, Hamburg, Germany, (18)National Centre for Earth Observation, Plymouth Marine Laboratory, Plymouth, United Kingdom, (19)University of Reading, Geography and Environmental Science, Reading, United Kingdom, (20)European Space Agency, Frascati, Italy, (21)Barcelona Supercomputing Center, Barcelona, Spain