10.1594/PANGAEA.969105Wei, BingbingBingbingWei0000-0001-5814-2421Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenMollenhauer, GesineGesineMollenhauer0000-0001-5138-564XAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenGrotheer, HendrikHendrikGrotheer0000-0003-0207-3767Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenHoltappels, MoritzMoritzHoltappels0000-0003-3682-1903Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenPANGAEA2024bottom waterFT-ICR-MSIrish shelfSPE-DOMEvent labelSample IDStation labelLATITUDELONGITUDEDATE/TIMEELEVATIONDEPTH, waterTypeNumber of compoundsMass of molecular formulasDouble bond equivalentAromaticity index, modifiedHydrogen/Carbon ratioOxygen/Carbon ratioHighly aromatic compoundsHighly unsaturated compoundsCarboxyl-rich alicyclic moleculesUnsaturated aliphatic and peptide-like compoundsSaturated compoundsDegradation indexTerrigenous indexProportionHighly aromatic compounds in dissolved organic carbonHighly unsaturated compounds in dissolved organic carbonCarboxyl-rich alicyclic molecules per dissolved organic carbonUnsatuared aliphatic and peptide-like compounds in dissolved organic carbonSaturated compounds in dissolved organic carbonCompounds with negative degradation index in dissolved organic carbonCompounds with positive degradation index in dissolved organic carbonTerrigenous compounds in dissolved organic carbonMarine compounds in dissolved organic carbonHighly aromatic compounds, carboxyl-rich alicyclic molecules normalizedUnsatuared aliphatic and peptide-like compounds, carboxyl-rich alicyclic molecules normalizedSaturated compounds, carboxyl-rich alicyclic molecules normalizedCompounds with negative degradation index, carboxyl-rich alicyclic molecules normalizedCompounds with positive degradation index, carboxyl-rich alicyclic molecules normalizedTerrigenous compounds, carboxyl-rich alicyclic molecules normalizedMarine compounds, carboxyl-rich alicyclic molecules normalizedCTD/RosetteFourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS)MSM107Maria S. Merian2022-05-21T00:00:00/2022-05-29T00:00:00Dataset10.1016/j.gca.2024.10.03710.1594/PANGAEA.969095333 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalIn May 2022, 2 surface water and 7 bottom water samples were collected with a Sea-Bird CTD rosette water sampler during the cruise MSM107 from the Northwest Irish Shelf. These water samples were first filtered through 0.4 μm glass fibre filters to remove particles on broad, from which dissolved organic matter (DOM) was extracted using solid-phase extraction (SPE). The SPE extracted DOM (SPE-DOM) were analyzed for 13C and 14C compositions using an isotope ratio mass spectrometer and a mini carbon dating system (MICADAS), respectively (doi:10.1594/PANGAEA.969095). The SPE-DOM were also analyzed for molecular composition using Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR-MS). Based on these analyses, we aim to understand the distribution pattern, dynamics, and transformation of DOM during its downslope transport, confirming the significance of DOC exported by lateral transport in the ocean's carbon cycle. Detailed dataset interpretation can be found in Wei et al. (2024).NEG-IDEG: peak magnitudes of 5 compounds strongly negatively correlated with SPE-DOC Δ14C
POS-IDEG: peak magnitudes of 5 compounds strongly positively correlated with SPE-DOC Δ14C-10.638433333333296-9.59165000000001654.946383333333355.7033North Atlantic OceanGerman Research Foundationhttps://doi.org/10.13039/501100001659390741603EXC 2077: The Ocean Floor – Earth's Uncharted Interface