Microplastics, Sea Surface Salinity, partial pressure of water carbon dioxide, temperature, and others collected from platform VO65 / team AkzoNobel as part of the Ocean Race Tour in North Atlantic Ocean, Baltic Sea, and others from 2019-05-26 to 2019-09-25. (NCEI Accession 0225418)

This accession contains the in situ oceanographic observations collected from using the 5th generation OceanPack by SubCtech to measure fCO2(pCO2,xCO2), sea surface salinity, chlorophyll A, and sea surface temperature. Besides, frequent samples were analyzed for microplastic concentration per cubic meter. The sampled water was pumped from the VO65 hulls scoop inlet of an average depth of 1.5 m for continuous measurements. Zero-calibrations were set to every 24 h and autonomous span CO2 gas calibration was performed in every harbor after each leg. The observations in Europe were conducted from May to September 2019. The analysis for microplastic particle concentration was conducted according to Tanhua & Gutekunst et al. 2020, PLOS ONE (https://doi.org/10.1371/journal.pone.0243203, NCEI Accession 0170967).