PANGAEA_969105 Molecular composition of surface and bottom water solid-phase extraction extracted dissolved organic matter in the Irish Shelf of the North Atlantic during RV MARIA S. MERIAN cruise MSM107 Wei, Bingbing; Mollenhauer, Gesine; Grotheer, Hendrik; Holtappels, Moritz Molecular composition of surface and bottom water solid-phase extraction extracted dissolved organic matter in the Irish Shelf of the North Atlantic during RV MARIA S. MERIAN cruise MSM107 2024-10-30 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.969105 Investigator Bingbing Wei bbw0727@gmail.com Earth Science Event label Sample ID Station label LATITUDE LONGITUDE DATE/TIME ELEVATION DEPTH, water Type Number of compounds Mass of molecular formulas Double bond equivalent Aromaticity index, modified Hydrogen/Carbon ratio Oxygen/Carbon ratio Highly aromatic compounds Highly unsaturated compounds Carboxyl-rich alicyclic molecules Unsaturated aliphatic and peptide-like compounds Saturated compounds Degradation index Terrigenous index Proportion Highly aromatic compounds in dissolved organic carbon Highly unsaturated compounds in dissolved organic carbon Carboxyl-rich alicyclic molecules per dissolved organic carbon Unsatuared aliphatic and peptide-like compounds in dissolved organic carbon Saturated compounds in dissolved organic carbon Compounds with negative degradation index in dissolved organic carbon Compounds with positive degradation index in dissolved organic carbon Terrigenous compounds in dissolved organic carbon Marine compounds in dissolved organic carbon Highly aromatic compounds, carboxyl-rich alicyclic molecules normalized Unsatuared aliphatic and peptide-like compounds, carboxyl-rich alicyclic molecules normalized Saturated compounds, carboxyl-rich alicyclic molecules normalized Compounds with negative degradation index, carboxyl-rich alicyclic molecules normalized Compounds with positive degradation index, carboxyl-rich alicyclic molecules normalized Terrigenous compounds, carboxyl-rich alicyclic molecules normalized Marine compounds, carboxyl-rich alicyclic molecules normalized geoscientificInformation bottom water CTD/Rosette FT-ICR-MS GeoB24801-2 GeoB24803-1 GeoB24807-1 GeoB24817-1 GeoB24820-1 GeoB24821-3 GeoB24825-1 Irish shelf MSM107 MSM107_1-2 MSM107_17-1 MSM107_20-1 MSM107_21-3 MSM107_25-1 MSM107_3-1 MSM107_7-1 SPE-DOM Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) Maria S. Merian 2022-05-21 2022-05-29 Complete 54.9463833333333 55.7033 -10.638433333333296 -9.591650000000016 unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 333 data points text/tab-separated-values Wei, Bingbing; Kusch, Stephanie; Wu, Junjie; Shaari, Hasrizal Bin; Mollenhauer, Gesine; Jia, Guodong (2024): River mouths are hotspots for terrestrial organic carbon burial on the Sunda Shelf: Implications for tropical coastal carbon sequestration. Geochimica et Cosmochimica Acta, 387, 1-11, https://doi.org/10.1016/j.gca.2024.10.037 Wei, Bingbing; Mollenhauer, Gesine; Grotheer, Hendrik; Holtappels, Moritz (2024): Isotope composition of surface and bottom water solid-phase extraction extracted dissolved organic matter in the Irish Shelf of the North Atlantic during RV MARIA S. MERIAN cruise MSM107 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.969095

In 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). ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.969105"! ** 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

http://en.wikipedia.org/wiki/Elevation ELEVATION http://en.wikipedia.org/wiki/ISO_6709 LATITUDE http://en.wikipedia.org/wiki/ISO_6709 LONGITUDE http://en.wikipedia.org/wiki/ISO_8601 DATE/TIME https://doi.org/10.1002/rcm.2386 Aromaticity index, modified https://doi.org/10.1016/j.gca.2024.10.037 River mouths are hotspots for terrestrial organic carbon burial on the Sunda Shelf: Implications for tropical coastal carbon sequestration https://doi.pangaea.de/10.1594/PANGAEA.969095 Isotope composition of surface and bottom water solid-phase extraction extracted dissolved organic matter in the Irish Shelf of the North Atlantic during RV MARIA S. MERIAN cruise MSM107 https://en.wikipedia.org/wiki/Fourier_transform_ion_cyclotron_resonance Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) https://en.wikipedia.org/wiki/RV_Maria_S._Merian Maria S. Merian DIF 9.4 2024-10-30 2026-07-10