CC021
Stable Isotopes in the marine environment – applications, modeling and best practices
Session ID#: 254191
Session Description:
The stable isotopic composition of oxygen (δ18O), hydrogen (δD), dissolved inorganic carbon (δ13CDIC) and nitrogen (δ15N) in seawater serve as tracers of modern ocean processes, both physical and biogeochemical. These isotopic ratios are also commonly used in paleoceanographic reconstructions. With the advancements in analytical capability and major monitoring programs (e.g., GEOTRACES, GO-SHIP) declaring some of these ratios as key parameters to analyze, stable isotope data of seawater and nutrients have experienced a major resurgence in recent years. The increase in data, the integration of such variables in ocean-climate models and the efforts to update databases make a review of the data, new insights, and emerging issues from intercomparison exercises particularly timely. Therefore, this session welcomes presentations on: new data on exchanges between the ocean, sea ice, ice sheets and the atmosphere or on anthropogenic carbon penetration; data quality assessments (e.g., intercomparison, best practices); or data coverage in space and depth range and related gaps. Modelling studies that utilize some or all of these four stable isotopes for present, past, and future ocean conditions are also encouraged, as are applications of stable isotope ratios in proxy calibration using paleo-archives such as bulk sediment, corals, giant clams, molluscs, or foraminifera.
Co-Sponsor(s):
Index Terms:
1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]
4271 Physical and chemical properties of seawater [OCEANOGRAPHY: GENERAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4870 Stable isotopes [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Student/Early Career Chair: Dharma Reyes Macaya, Heriot-Watt University, Paleobiogeochemistry working group, Edinburgh, United Kingdom; University of Concepcion, Biogeochemistry Laboratory (CR2/SECOS ANID), Chile
Primary Chair: Antje H L Voelker, Centro de Ciencias do Mar (CCMAR/ CIMAR LA), Universidade do Algarve, Faro, Portugal; Instituto Português do Mar e da Atmosfera (IPMA), Divisão de Geologia e Georecursos Marinhos, Alges, Portugal
Co-chairs: Dharma Reyes Macaya, Heriot-Watt University, Paleobiogeochemistry working group, Edinburgh, United Kingdom; University of Concepcion, Biogeochemistry Laboratory (CR2/SECOS ANID), Chile, Liping Zhou, Peking University, Department of Geography, Beijing, China and Gilles Reverdin, Sorbonne Université-CNRS-IRD-MNHN, LOCEAN – IPSL, Paris, France
Seawater and DIC Stable Isotope Data Evidence Anthropogenic and Hydrographic Changes in the Mid-Latitudinal Northeast Atlantic Ocean (2015701)
Antje H L Voelker1,2, Emilia Salgueiro3,4, Marcos Fontela5, Fatima F G Abrantes3,6 and Robert van Geldern7, (1)Instituto Português do Mar e da Atmosfera (IPMA), Divisão de Geologia e Georecursos Marinhos, Alges, Portugal, (2)Centro de Ciencias do Mar (CCMAR/ CIMAR LA), Universidade do Algarve, Faro, Portugal, (3)Instituto Português do Mar e da Atmosfera, Lisboa, Portugal, (4)Centro de Ciências do Mar do Algarve (CCMAR/CIMAR LA), Universidade do Algarve, Faro, Portugal, (5)Instituto de Investigaciones Marinas, CSIC, Eduardo Cabello 6, 36208, Vigo, Spain, (6)CCMAR - Centro de Ciências do Mar do Algarve, Universidade do Algarve, Faro, Portugal, (7)Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), GeoZentrum Nordbayern, Erlangen, Germany
Reconstructing Marine Carbon Cycling Dynamics from the δ¹³C of Dissolved Inorganic Carbon in the Northern California Current (2016886)
Brittany Nicole Hupp, George Mason University Fairfax, Fairfax, VA, United States and Jennifer S Fehrenbacher, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States
Stepwise Freshwater Forcing from the Fennoscandian Ice Sheet during the Last Deglaciation: Evidence from Benthic Foraminiferal Isotopes (2018424)
Helena L Filipsson1, Nadine B Quintana Krupinski2, Andreas Mackensen3, Yasmin Bokhari Friberg4, Jonas T Donnenfield5, Marit-Solveig Seidenkrantz6, Karen Luise Knudsen7, Jeroen Groeneveld8 and Anne-Sophie Fanget7, (1)Lund University, Department of Geology, Lund, Sweden, (2)Department of Geology, Lund University/Now at NIRAS Sweden AB, Lund, Sweden, (3)Alfred Wegener Institute, Bremerhaven, Germany, Bremerhaven, Germany, (4)Department of Geology, Lund University/Now at School of Natural Sciences, Macquarie University, Sydney, Australia, Lund, Sweden, (5)Carleton College, Northfield, United States, (6)Aarhus University, Department of Geoscience, Aarhus, Denmark, (7)Paleoceanography and Paleoclimate Group, Department of Geoscience, Aarhus University, Aarhus, Denmark, (8)Marum, University of Bremen/University of Hamburg/Institute of Oceanography, National Taiwan University, Taipai City, Taiwan
Oxygen-17 fingerprinting of glacier isotopic composition: Proof of concept (2026141)
Auguste Lugrin1, Mathieu Daëron2, Waelbroeck Claire1, Mathieu Ardyna3, Gilles Reverdin4, Jean-Baptiste Sallée5 and Justin Chaillot6, (1)LOCEAN/IPSL, Sorbonne Université-CNRS-IRD-MNHN, UMR7159, 75005 Paris, France., Paris, France, (2)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Paris, FRANCE, (3)Laval University, Quebec City, QC, Canada, (4)Sorbonne Université-CNRS-IRD-MNHN, LOCEAN – IPSL, Paris, France, (5)LOCEAN‐IPSL, Sorbonne Université, CNRS, IRD, MNHN, Paris, France, (6)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France
Seasonal variability of water isotopic composition in the surface ocean (2028843)
Gilles Reverdin, CNRS, Paris Cedex 16, France, Waelbroeck Claire, LOCEAN/IPSL, Sorbonne Université-CNRS-IRD-MNHN, UMR7159, 75005 Paris, France., Paris, France, Jean-Claude Dutay, CEA, LSCE, Saclay, France, Jérôme Demange, SOrbonne Université, LOCEAN, Paris, France and Lola Goémé, Sorbonne Université, LOCEAN, Paris, France
Assessing Morphotype Bias in the Stable Oxygen and Carbon Isotopic Signatures of Globigerinoides ruber: Insights from Individual Foraminiferal Analysis (2031911)
Ammoose K Jayan, Central University of Kerala, Department of Geology, Kasaragod, India, Kaustubh Thirumalai, University of Arizona, Department of Geosciences, Tucson, United States and Sijin Kumar A V, Department of Geology, Central University of Kerala, Kasaragod, India
Pteropods Are Excellent Recorders of Surface Temperatures in the Southern Ocean (2033463)
Jasper Ferber1, Lester Lembke-Jene2, Georgios Xydis1, Nils Andersen3 and Nina Keul1, (1)University of Kiel, Institute of Geosciences, Kiel, Germany, (2)AWI, Bremerhaven, Germany, (3)University of Kiel, Leibniz Laboratory for Radiometric Dating and Stable Isotope Research, Kiel, Germany
Sub-annual biogenic sulfate records from the Greenland ice cores using Sulfur isotopes (2038524)
Priyesh Prabhat1, Mohammad Nuruzzama1, Yang Yu1, Becky Alexander2, Jihong Cole-Dai3 and Andrea Burke1, (1)University of St Andrews, School of Earth and Environmental Sciences, St Andrews, United Kingdom, (2)University of Washington, Department of Atmospheric and Climate Science, Seattle, United States, (3)South Dakota State University, Department of Chemistry and Biochemistry, Brookings, SD, United States
High-Precision and Efficient Method for δ13C-DIC Analysis and Data Collection Along GO-SHIP Transect I09N (2025) in the Northern Indian Ocean (2047671)
Songying Tang1, Zhentao Sun2, Eliot A Atekwana3 and Wei-Jun Cai2, (1)University of Delaware, School of Marine Science and Policy, Newark, United States, (2)University of Delaware, School of Marine Science and Policy, Newark, DE, United States, (3)University of California Davis, Department of Earth and Planetary Sciences, Davis, United States
