Dataset on microplastic concentrations, characteristics, and chemical composition in the marine surface waters of Latvia – the Eastern Gotland basin and the Gulf of Riga

This dataset provides information on composition and spatial distribution of spectroscopically verified microplastics of two Baltic Sea sub-basins – the semi-enclosed Gulf of Riga and the Eastern Gotland Basin – as well as meteorological conditions during sampling events for further studies and research activities. The data can be used e.g., for modelling spatial distribution or pinpointing sources and transport pathways of spectroscopically verified microplastics in marine environment and for the calibration of existing models.