Mariam Maku Swaleh Mwasaria, Ufukwe Marine Centre-Ocean Climate Innovation Hub, Mombasa, Kenya; Technical University of Mombasa, Pure and Applied Sciences, Mombasa, Kenya, Leila Kittu, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, Ali Shee, Technical university of Mombasa, Mombasa, Kenya, Joseph Kamau, Kenya Marine and Fisheries Research Institute, Mombasa, Kenya and Ocean Alkalinity Enhancement Pelagic Impact Intercomparison Project (OAEPIIP) Kenya team