Dr. Susan Anne Wijffels, PhD, Woods Hole Oceanographic Institution, Physical Oceanography, Woods Hole, MA, United States, Geoffrey Gebbie, Woods Hole Oceanographic Institution, Woods Hole, United States, Pelle Robbins, Woods Hole Oceanographic Institution, Woods Hole, MA, United States and Bernadette Sloyan, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Hobart, TAS, Australia