10.1594/PANGAEA.995973Bracher, AstridAstridBracher0000-0003-3025-5517Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenHohe, ChristianChristianHoheAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenWiegmann, SonjaSonjaWiegmannAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenXi, HongyanHongyanXi0000-0003-2827-0603Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenPANGAEA2026HPLC analysisphytoplankton pigmentsSample IDEvent labelDEPTH, waterDATE/TIMELATITUDELONGITUDEChlorophyllide bChlorophyll c3Chlorophyll c1+c2Chlorophyllide aPeridininPheophorbide a19-ButanoyloxyfucoxanthinFucoxanthinNeoxanthin19-HexanoyloxyfucoxanthinPrasinoxanthinViolaxanthinDiadinoxanthinAntheraxanthinAlloxanthinDiatoxanthinZeaxanthinLuteinChlorophyll bChlorophyll aalpha-Carotenebeta-Carotene19'-Hexanoyloxy-4-ketofucoxanthinPheophytin aPyropheophytin aCTD/RosetteLight/OpticsUnderway cruise track measurementsHigh Performance Liquid Chromatography (HPLC)MSM93Maria S. MerianA Machine Learning based approach towards products of Phytoplankton functional Types in the Arctic Ocean (ML-PhyTAO)Arctic Amplification (AC3)FRontiers in Arctic marine Monitoring (FRAM)2020-06-28T07:02:00/2020-07-26T16:46:18Dataset10.1029/2022MS00312610.3354/meps16130310.5194/essd-2026-14410.5194/bg-8-3609-20115694 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalPhytoplankton pigments were determined in the water surface (from 0 to 11 m depth) of a transect from the North Sea to the Fram Strait in the Arctic Ocean and back during Maria S. Merian expedition MSM93 from 28 June to 26 July 2020. Water samples were collected from CTD Niskin bottles at five to six different depths from the upper 100 m at CTD stations and from underway sampling. Between 0.4 to 3.5 L of each seawater sample was filtered through Whatman GF/F filters. The sample filters were then shock‐frozen in liquid N2 and kept at −80 °C until analysis. High Pressure Liquid Chromatography (HPLC) was performed to quantify various phytoplankton pigments (see Table 1 in Taylor et al. 2011) following the method of Barlow et al. (1997) that was adjusted to our temperature‐controlled instruments as detailed in Álvarez et al. (2022). Data were used to analyse the Fram Strait phytoplankton community composition dynamics in Xi et al. (submitted to GBC) and contributing to an Panarctic Ocean pigment collection (Heidemann et al. 2026).-21.2264710.3245363.0403579.64939North Greenland SeaNorwegian SeaAtlanticEuropean Commissionhttps://doi.org/10.13039/50110000078023138L03D-COP-INNO SCI-9000Copernicus Marine – Innovation Service Evolution R&D Project ML-PhyTAOGerman Research Foundationhttps://doi.org/10.13039/501100001659268020496TRR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms