835ccb81-ab13-4aec-81ab-de60a4e65d3a ETT S.p.A. 2026-08-26T15:59:48 ISO 19115:2003/19139 1.0 WGS 1984 Trace gas measurements, basal glacial meltwater fractions, and water ages during RV POLARSTERN cruise PS124, Southern Weddell Sea http://localhost:8080/demodem/editioin This datset presents trace gas measurements and derived variables such as basal glacial meltwater (GMW) fractions and water mass ages from the RV POLARSTERN expedition PS124 in the southern Weddell Sea in austral summer 2021. The trace gases comprise the lighter noble gases, i.e., total helium (He) and the excess above solubility equilibrium ΔHe, the 3He/4He ratio reported as δ3He, total neon (Ne) and the excess ΔNe, and the deviation from the equilibrium He/Ne ratio Δ(He/Ne), as well as the transient anthropogenic trace gases chlorofluorocarbon (CFC-12) and sulphur hexafluoride (SF6) concentrations. From these noble gases (He and Ne) we derived glacial meltwater fractions. From the transient tracers we computed SF6-concentration ages, CFC-12/SF6 ratio ages and TTD (Transit Time Distribution) mean ages. Alfred-Wegener-Institut Helmholtz-Zentrum Fur Polar- Und Meeresforschung (AWI) https://catalog.s4oceanice.eu:/geonetwork/srv/api/records/835ccb81-ab13-4aec-81ab-de60a4e65d3a/attachments/cropped-o_ice_logo2-2-1.webp Southern Ocean World Antarctic freshwater bodies Antarctica Continents, countries, sea regions of the world. 2015-07-17 geonetwork.thesaurus.external.place.regions GLACIER MELT POTENTIAL TEMPERATURE SALINITY WATER PRESSURE CFC-12 NOBLE GAS Global Change Master Directory (GCMD) Keywords 2026-08-06 geonetwork.thesaurus.external.theme.ardc-curated_gcmd-sciencekeywords_19-4-2024-09-06 CC-BY 4.0 https://creativecommons.org/licenses/by/4.0 oceans 2021-02-08 2021-03-09 -36.5863 -25.7143 -77.1077 -70.4177 https://er1.s4oceanice.eu/erddap/tabledap/Weddell_Sea_water_mass_age_meltwater_fractions.html WWW:LINK-1.0-http--opendap Data Subset Form ERDDAP's version of the OPeNDAP .html web page for this dataset. Specify a subset of the dataset and download the data via OPeNDAP or in many different file types. https://zenodo.org/records/14193070 WWW:LINK-1.0-http--link OCEAN ICE Zenodo Community Related publication under the OCEAN ICE Zenodo Community https://zenodo.org/records/12581210 WWW:LINK-1.0-http--link OCEAN ICE Zenodo Community Related publication under the OCEAN ICE Zenodo Community https://doi.pangaea.de/10.1594/PANGAEA.971321 WWW:LINK-1.0-http--link Source Metadata Record Original metadata record from the source (Argo) https://www.soosmap.aq/ WWW:LINK-1.0-http--link View Data in SOOSmap SOOSmap is an interactive web portal for oceanographic data visualisation and dissemination developed and hosted for SOOS by the European Marine Observations and Data Network (EMODnet) Physics and supported by the Southern Ocean Carbon and Heat Impact on Climate (SO-CHIC) project.