Size-fractionated chlorophyll and physico-chemical variables at three coastal stations in Saudi waters of the Arabian Gulf between May 2016 and May 2018

Within the framework of the project “Sustaining Research Project, Marine Environmental Studies in the Arabian Gulf – Phase VI”, three coastal stations at Manifa, Khobar and Uqair were sampled monthly for size-fractionated chl a (micro-, nano- and picophytoplankton), as well as for total chl a, and for a range of physico-chemical variables. Sampling started in May 2016, this file includes the data from the first two years.