Ann-Christine Zinkann, NOAA, Global Ocean Monitoring and Observing Program, Washington, United States, Tamaryn Morris, South African Environmental Observation Network, Cape Town, South Africa, Jennifer Vetich, South African Environmental Observation Network (SAEON), Cape Town, SOUTH AFRICA, Elisabeth Rémy, Mercator Ocean International, Toulouse, France, Robert E Todd, Woods Hole Oceanographic Institution, Physical Oceanography, Woods Hole, MA, United States, Riesna R. Audh, South African Environmental Observation Network (SAEON) Egagasini Node, Cape Town, South Africa, Jordan Van Stavel, South African Environmental Observation Network, South African Polar Research Infrastructure, Cape Town, South Africa, Weidong Yu, School of Atmospheric Sciences, Sun Yat-Sen University, Zhuhai Campus, Zhuhai, CHINA and Marjolaine Krug, Department of Forestry, Fisheries and the Environment, Cape Town, South Africa