https://doi.pangaea.de/10.1594/PANGAEA.997293Fisher, Ben JBen JFisher0000-0001-7113-2818Heriot-Watt UniversitySeidel, MichaelMichaelSeidel0000-0003-0934-1939Carl von Ossietzky University of OldenburgWaite, NicoleNicoleWaite0000-0002-1107-4959Institute of Marine and Coastal Sciences, Rutgers UniversityManning, Miah LynneMiah LynneManningInstitute of Marine and Coastal Sciences, Rutgers UniversityCappola, MichaelMichaelCappolaUniversity of DelawareDittmar, ThorstenThorstenDittmar0000-0002-3462-0107Carl von Ossietzky University of OldenburgSchofield, OscarOscarSchofield0000-0003-2359-4131Institute of Marine and Coastal Sciences, Rutgers UniversityPoulton, Alex JAlex JPoulton0000-0002-5149-6961Heriot-Watt UniversityHenley, Sian FrancesSian FrancesHenley0000-0003-1221-1983Edinburgh Napier UniversityMolecular composition of dissolved organic matter (DOM) along the West Antarctic Peninsula in summer 2023 determined by FT-ICR-MSPANGAEA2026Dissolved Organic Matterfield observationsFT-ICR MSship-basedSouthern OceanEvent labelLATITUDELONGITUDEDEPTH, waterDATE/TIMEMolecular formulaMass of molecular formulasHydrogen/Carbon ratioOxygen/Carbon ratioPeak intensityCTD/RosetteCTD, Sea-Bird, SBE 911plusFourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS)LMG2301Laurence M. GouldPalmer Long-Term Ecological Research (Palmer-LTER)2023-01-04T10:11:30/2023-01-28T12:04:28Datasethttps://doi.pangaea.de/10.1594/PANGAEA.9973131673280 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalAs part of the Palmer LTER research program during a 24 day period across January 2023, we conducted oceanographic CTD sampling at 10 sites across the West Antarctic Peninsula (4 on the shelf, 6 on the coast), with a view to link different marine phytoplankton communities to distinct molecular signatures of solid phase extracted (SPE) dissolved organic matter. This dataset comprises ultrahigh resolution mass spectrometry (Fourier-transform ion cyclotron resonance mass spectrometer, FT-ICR-MS) data and molecular indicies calculated from these data (IPhoto, IDeg, IBio).Supported by the Antarctic Science International Bursary, "Is Southern Ocean dissolved organic matter export influenced by phytoplankton community composition?" https://www.antarcticsciencebursary.org.uk-78.48554-64.39954-69.82935-64.60813Southern OceanGerman Research Foundationhttps://doi.org/10.13039/501100001659390741603EXC 2077: The Ocean Floor – Earth's Uncharted InterfaceNational Science Foundationhttps://doi.org/10.13039/1000000010217282Palmer Long-Term Ecological ResearchNational Science Foundationhttps://doi.org/10.13039/1000000010823101Palmer Long-Term Ecological ResearchNational Science Foundationhttps://doi.org/10.13039/1000000011440435Palmer Long-Term Ecological ResearchNational Science Foundationhttps://doi.org/10.13039/1000000019011927Palmer Long-Term Ecological ResearchNational Science Foundationhttps://doi.org/10.13039/1000000019632763Palmer Long-Term Ecological ResearchNational Science Foundationhttps://doi.org/10.13039/100000001OPP-2026045ANT Integrated System SciencesNatural Environment Research Councilhttps://doi.org/10.13039/501100000270NE/S007407/1E4: Edinburgh Earth, Ecology and Environment Doctoral Training Partnership