CT14B:
Tracing Ocean Processes: From Organic Carbon Oxidation to Age Estimates by Transient Tracers II Posters


Session ID#: 37666

Session Description:
Transient tracers are a group of (chemical) compounds that are conservative in sea-water and have well-established source function over time at the ocean surface, or have well-defined decay-functions.Transient tracers can be used to investigate ocean ventilation, temporal changes of ventilation, time-scales of ocean circulation and processes such as oxygen utilization rates and the storage of anthropogenic carbon in the ocean interior. Heterotrophic transformation of organic matter drives elemental cycles in aquatic systems. A wide range of transformations affects the ability of microorganisms to assimilate this complex pool of organic matter, including physical aggregation/disaggregation, sorption/desorption, and encapsulation within minerals, photochemical reactions, processing or repackaging by protists and zooplankton, and hydrolysis by extracellular enzymes. These transformations can occur across various groups of microorganisms ranging from bacteria, phytoplankton, protists, to zooplankton. Furthermore, interactions of diverse compound classes within microorganisms can affect the metabolism of those compounds, resulting in phenomena including the priming effect or co-metabolism. This session will discuss methods to quantify transport and ventilation time-scales as well as organic carbon oxidation processes.
Primary Chair:  Andrew D Steen, University of Tennessee, Earth and Planetary Sciences, Knoxville, TN, United States
Co-chairs:  Toste S Tanhua1, Shuting Liu2 and Tim Stoeven1, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany(2)University of California Santa Barbara, Marine Science Institute, Santa Barbara, CA, United States
Moderators:  Shuting Liu, University of California Santa Barbara, Marine Science Institute, Santa Barbara, CA, United States and Toste S Tanhua, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Student Paper Review Liaison:  Shuting Liu, University of California Santa Barbara, Marine Science Institute, Santa Barbara, CA, United States
Index Terms:

4532 General circulation [OCEANOGRAPHY: PHYSICAL]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4808 Chemical tracers [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Cross-Topics:
  • BN - Biogeochemistry and Nutrients
  • MM - Microbiology and Molecular Ecology
  • PS - Physical Oceanography: Mesoscale and Smaller
  • PO - Physical Oceanography: Other

Abstracts Submitted to this Session:

Carboxyl-rich Alicyclic Molecules (CRAM) Proxy Compounds Select Bacteria for Oxidation of Recalcitrant DOM in the Mesopelagic Sargasso Sea (304438)
Shuting Liu1, Craig A Carlson1, Rachel Jane Parsons2, Keri Opalk1, Nicholas Huynh1, Stephen J Giovannoni3, Luis Manuel Bolanos3, Elizabeth B Kujawinski4, Yuehan Lu4,5, Krista Longnecker4, Zachary Landry3 and Chance English1, (1)University of California Santa Barbara, Marine Science Institute/Department of Ecology, Evolution and Marine Biology, Santa Barbara, CA, United States, (2)Bermuda Institute for Ocean Sciences, BIOS, St. George's, Bermuda, (3)Oregon State University, Department of Microbiology, Corvallis, OR, United States, (4)Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States, (5)University of Alabama, Department of Geological Sciences, Tuscaloosa, AL, United States
Oil and chemical dispersant alter microbial cycling of organic matter with consequences for carbon cycling in the ocean (324071)
Kai Ziervogel, University of New Hampshire, Ocean Process Analysis Laboratory, Durham, NH, United States, Samantha Benton Joye, Univ Georgia, Department of Marine Sciences, Athens, GA, United States and Carol Arnosti, The University of North Carolina at Chapel Hill, Department of Marine Sciences, Chapel Hill, NC, United States
Distribution of CFCs and SF6 Measured on the 2015 GEOTRACES and Repeat Hydrography cruises to the Arctic Ocean (306043)
William M Smethie Jr, Lamont -Doherty Earth Observatory, Palisades, NY, United States and James H Swift, Scripps Institution of Oceanography, La Jolla, CA, United States
Ventilation of the subtropical North Atlantic: Tracer-constrained water-mass distributions and ventilation times along trans-Atlantic GEOTRACES section GA03 (307905)
Mark Holzer, University of New South Wales, Sydney, NSW, Australia and William M Smethie Jr, Lamont -Doherty Earth Observatory, Palisades, NY, United States
λ-age: A Novel Approach for Determining Age in Ocean Models (309559)
Hannah M Zanowski1,2, Andrew E Shao3 and Robert Hallberg3, (1)Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, NJ, United States, (2)University of Washington, Joint Institute for the Study of the Atmosphere and Ocean, Seattle, WA, United States, (3)Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States
Decadal Changes In Southern Ocean Ventilation Inferred from Deconvolutions of Repeat Hydrographies (310663)
Yu-Heng Ting, University of New South Wales, Carlingford, NSW, Australia and Mark Holzer, University of New South Wales, Sydney, Australia
Evolution of 137Cs, 90Sr, and 129I derived from the Fukushima Dai-ichi nuclear accident and their potential as geochemical tracers (312604)
Jennifer An Kenyon1, Ken Buesseler2, Nuria Casacuberta3, Maxi Castrillejo4, Shigeyoshi Otosaka5, Pere Masque6,7, Jessica Drysdale2, Steven M Pike8 and Xenia Diaz9, (1)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States, (2)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (3)ETH Swiss Federal Institute of Technology Zurich, Laboratory of Ion Beam Physics, Zurich, Switzerland, (4)Universitat Autònoma de Barcelona, Department of Physics and Institut de Ciència i Tecnologia Ambientals, Barcelona, Spain, (5)JAEA, Tokai, Japan, (6)Autonomous University of Barcelona (UAB), Barcelona, Spain, (7)Edith Cowan University, School of Natural Sciences & Centre for Marine Ecosystems Research, Perth, Australia, (8)Woods Hole Oceanographic Institute, Woods Hole, MA, United States, (9)Universitat Autonoma de Barcelona, Spain
Decadal Variability of Anthropogenic Carbon in the Labrador Sea from 1992 to 2016 (313042)
Lorenza Raimondi1, Kumiko Azetsu-Scott2, Toste S Tanhua3, Arne Koertzinger3 and Douglas Wallace4, (1)Dalhousie University, Department of Oceanography, Halifax, NS, Canada, (2)Bedford Inst Oceanography, Dartmouth, NS, Canada, (3)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (4)Dalhousie University, Halifax, NS, Canada
Decadal Changes in Ventilation and Oxygen in the Eastern Tropical North Atlantic Oxygen Minimum Zone (316295)
Tim Stoeven, Toste S Tanhua and Arne Koertzinger, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
129I and 236U as Tracers of Water Mass Circulation in the Fram Strait (316442)
Anne-Marie Wefing1, Nuria Casacuberta1, Marcus Christl2, Christof Vockenhuber1 and Michael Rutgers van der Loeff3, (1)ETH Swiss Federal Institute of Technology Zurich, Laboratory of Ion Beam Physics, Zurich, Switzerland, (2)ETH Zurich, Laboratory of Ion Beam Physics, Zurich, Switzerland, (3)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
Biogenic Halocarbons in the Tropical East Pacific during different Seasons and ENSO-Conditions (319630)
Birgit Quack1, Sarah Gjermo2, Steffen Fuhlbruegge1, Alina Fiehn1, Irene Stemmler3, Elliot L Atlas4, Christa A Marandino5, Kirstin Krüger6, Toste S Tanhua7 and Helmke Hepach8, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)UIO, Oslo, Norway, (3)Max Planck Institute for Meteorology, Hamburg, Germany, (4)RSMAS, Miami, FL, United States, (5)GEOMAR, Kiel, Germany, (6)University of Oslo, Oslo, Norway, (7)Helmholtz Centre for Ocean Research Kiel, GEOMAR, Kiel, Germany, (8)GEOMAR Centre for Ocean Research Kiel, Kiel, Germany
Application of a Newton-Krylov Solver to Spin-up Biogeochemical Tracers (324199)
Keith T Lindsay, National Center for Atmospheric Research, Boulder, CO, United States
Inferring particle dynamics in the Mediterranean Sea from in-situ pump POC and pigment data using Bayesian statistics (324815)
Weilei Wang, University of California Irvine, Earth System Science, Irvine, CA, United States, Cindy Lee, Stony Brook Univ, Stony Brook, NY, United States and Francois Primeau, University of California Irvine, Irvine, CA, United States

See more of: Chemical Tracers, Organic Matter and Trace Elements