CT007:
Transient Tracers in the ocean: Age, Ventilation, Processes, Anthropogenic Carbon, Methods and Data


Session ID#: 28135

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. The high impact of transient tracer data and the medium feasibility of measurements have made transient tracers to be an Essential Ocean Variable in the Global Ocean Observing System (GOOS). A range of transient tracers has been used in the ocean, and new ones are being explored, to cover the different time-scales involved. Information by transient tracer depends on suitable methods which describe the tracer distributions in the ocean. Commonly used methods are the Transit Time Distribution (TTD) framework and the Maximum Entropy Method. However, there are regions in the ocean where different methods, or tracers, might be needed, especially at high latitudes.  

We call for contributions on transient tracer applications based on both field data and modelling, and for contributions on method evaluations and general contributions on transient tracer data management.

Primary Chair:  Toste S Tanhua, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Co-Chair:  Tim Stoeven, Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Index Terms:

4262 Ocean observing systems [OCEANOGRAPHY: GENERAL]
4532 General circulation [OCEANOGRAPHY: PHYSICAL]
4536 Hydrography and tracers [OCEANOGRAPHY: PHYSICAL]
4808 Chemical tracers [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Cross-Topics:
  • BN - Biogeochemistry and Nutrients
  • PO - Physical Oceanography: Other

Abstracts Submitted to this Session:

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
Mark Holzer, University of New South Wales, Sydney, NSW, Australia and William M Smethie Jr, Lamont -Doherty Earth Observatory, Palisades, NY, United States
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
Yu-Heng Ting, University of New South Wales, Carlingford, NSW, Australia and Mark Holzer, University of New South Wales, Sydney, Australia
Sven Ebser1, Arne Kersting2, Zhongyi Feng1, Lisa Ringena1, Maximilian Schmidt1, Stefan Beyersdorfer2, Emeline Mathouchanh2, Florian Ritterbusch2, Toste S Tanhua3, Tim Stoeven3, Werner Aeschbach2 and Markus Oberthaler1, (1)Heidelberg University, Kirchhoff-Institute for Physics, Heidelberg, Germany, (2)Heidelberg University, Institute of Environmental Physics, Heidelberg, Germany, (3)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Maxi Castrillejo1, Núria Casacuberta2,3, Marcus Christl2, Jordi Garcia-Orellana1, Christof Vockenhuber2, Hans-Arno Synal2 and Pere Masqué1,4, (1)Universitat Autònoma de Barcelona, Department of Physics and Institut de Ciència i Tecnologia Ambientals, Barcelona, Spain, (2)ETH-Zurich, Laboratory of Ion Beam Physics, Switzerland, (3)ETH-Zurich, Institute of Biogeochemistry and Pollutant Dynamics, Environmental Physics, Switzerland, (4)Edith Cowan University, School of Science, Centre for Marine Ecosystems Research, Australia
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
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
Ann M Bardin1, Keith T Lindsay2 and Francois Primeau1, (1)University of California Irvine, Irvine, CA, United States, (2)NCAR, Boulder, CO, United States
Tim Stoeven, Toste S Tanhua and Arne Koertzinger, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Anne-Marie Wefing1, Nuria Casacuberta1, Marcus Christl1, Christof Vockenhuber1 and Michael Rutgers van der Loeff2, (1)ETH Swiss Federal Institute of Technology Zurich, Laboratory of Ion Beam Physics, Zurich, Switzerland, (2)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
John Smith1, Nuria Casacuberta2, Marcus Christl3, Christof Vockenhuber2, R Jack Cornett4, Timothy C Kenna5 and Tom Guilderson6, (1)Bedford Institute of Oceanography, NS, Canada, (2)ETH Swiss Federal Institute of Technology Zurich, Laboratory of Ion Beam Physics, Zurich, Switzerland, (3)ETH-Zurich, Laboratory of Ion Beam Physics, Switzerland, (4)University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, ON, Canada, (5)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (6)University of California at Santa Clara, Santa Clara, CA, United States
Keith T Lindsay, National Center for Atmospheric Research, Boulder, CO, United States