Subsurface microplastics concentration in the Eurasian Arctic (Barents, Kara, Laptev and East-Siberian Seas) collected aboard R/V Akademik Mstislav Keldysh from 2019-09-18 to 2019-10-21 (NCEI Accession 0277532)

This study estimated the concentration of subsurface microplastics (i.e. plastics measuring less than 5mm, reported in unit of pieces/m3) in the Eurasian Arctic (Barents, Kara, Laptev and East-Siberian Seas) from 2019-09-18 to 2019-10-21. Microplastics data were collected aboard R/V Akademik Mstislav Keldysh using its underway pump-through system with an intake located at a depth of 3m. This dataset contains the results from all 60 subsurface water samples, in a spreadsheet format.