PO13E:
Ocean Circulation and Biogeochemistry in a Water Mass Framework I
Session ID#: 9337
Session Description:
Water masses are the phenomenological expression of large-scale dynamical processes in the ocean, and for this reason have long been the foundation of our characterization and understanding of large-scale ocean circulation. Recent and ongoing advances have focused on dynamically-active tracers (e.g. density, temperature, salinity and potential vorticity), as these lend themselves most directly to characterizing the budgets of heat and freshwater and more generally the overturning circulation. In addition a water mass framework is general, and can provide insight into the dynamical and thermohaline controls on ocean biogeochemistry and the ocean carbon cycle.
Recently significant attention has been devoted to water mass modification processes (formation, erosion) occurring within the ocean interior, and connecting this to surface transformations and the large-scale overturning circulation. Additional efforts have begun to consider this for the case of ocean biogeochemistry as the concepts of interior ventilation and dynamical controls on preformed nutrients and carbon are intrinsically linked to water mass formation processes in the ocean’s surface boundary layer.
This session welcomes studies that exploit in-situ and integrated observations, theory, and numerical modeling-based analysis (both Eulerian and Lagrangian). Abstracts are welcomed that focus on physical processes, biogeochemical processes and/or the interplay between the two.
Primary Chair: Keith B Rodgers, IBS Center for Climate Physics, Busan, South Korea
Chairs: Daniele Iudicone, Stazione Zoologica Anton Dohrn, Naples, Italy, Jan David Zika, University of Southampton, Southampton, United Kingdom and Dafydd Gwyn Evans, University of Southampton, Southampton, SO14, United Kingdom
Moderators: Daniele Iudicone, Stazione Zoologica Anton Dohrn, Naples, Italy, Keith B Rodgers, IBS Center for Climate Physics, Busan, South Korea, Dafydd Gwyn Evans, University of Southampton, Southampton, SO14, United Kingdom and Jan David Zika, University of Southampton, Southampton, United Kingdom
Student Paper Review Liaisons: Keith B Rodgers, IBS Center for Climate Physics, Busan, South Korea and Jan David Zika, University of Southampton, Southampton, United Kingdom
Co-Sponsor(s):
Abstracts Submitted to this Session:
Decadal variability of Subtropical Mode Water subduction and its impact on biogeochemistry (88616)
Eitarou Oka1, Bo Qiu2, Yusuke Takatani3, Kazutaka Enyo3, Daisuke Sasano4, Naohiro Kosugi5, Masao Ishii5, Toshiya Nakano6 and Toshio Suga7,8, (1)The University of Tokyo, Atmosphere and Ocean Research Institute, Kashiwa, Japan, (2)University of Hawaii at Manoa, Department of Oceanography, Honolulu, HI, United States, (3)Global Environment and Marine Department, Japan Meteorological Agency, Tokyo, Japan, (4)Meteorological Research Institute, Oceanography and Geochemistry Research Department, Tsukuba, Japan, (5)Meteorological Research Institute, Japan Meteorological Agency, Tsukuba, Japan, (6)Japan Meteorological Agency, Global Environment and Marine Department, Tokyo, Japan, (7)Tohoku University, Graduate School of Science, Sendai, Japan, (8)Tohoku University, Yokosuka, Japan
A Better MOC Index: AMOC-θ/S in the North Atlantic Ocean: Spatial Circulation, Water-mass Transformation and Heat Transport on the Temperature/Salinity Plane (90412)
Peter B Rhines1, Xiaobiao Xu2, Eric Chassignet2 and William J Schmitz Jr3, (1)University of Washington, Seattle, WA, United States, (2)Florida State University, Center for Ocean-Atmospheric Prediction Studies, Tallahassee, FL, United States, (3)Board of Ocean Studies, Corpus Christi, TX, United States
Time of Emergence of Ocean Interior Acidification and De-oxygenation in a Water Mass Framework (93352)
Maricela Coronado, Princeton University, Department of Geosciences, Princeton, NJ, United States, Ivy Frenger, ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, Thomas L Froelicher, Universtity of Bern, Climate and Environmental Physics, Bern, Switzerland, Keith B Rodgers, IBS Center for Climate Physics, Busan, South Korea, Sarah Schlunegger, Princeton University, Princeton, NJ, United States, Daisuke Sasano, Meteorological Research Institute, Oceanography and Geochemistry Research Department, Tsukuba, Japan and Masao Ishii, Japan Meteorological Agency, Meteorological Research Institute, Tsukuba, Japan
Why Do Water Masses Successfully Describe a Spatially-Complex, Process-Rich Ocean? (91315)
Geoffrey Gebbie, Woods Hole Oceanographic Inst., Woods Hole, MA, United States
How do Biogeochemical Tracers Leave the Surface Mixed Layer? : Anthropogenic Carbon Subduction and Ocean De-oxygenation (91510)
Laurent Bopp, LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, Damien Couespel, LOCEAN, Paris, France, Laure Resplandy, Scripps Institution of Oceanography, UCSD, La Jolla, NJ, United States and Marina Levy, LOCEAN, Paris Cedex 05, France
Circulation and mixing in the subpolar North Atlantic diagnosed from climatology using a Regional Thermohaline Inverse Method (RTHIM) (91640)
Neill Sutherland Mackay1, Chris Wilson1 and Jan David Zika2, (1)National Oceanography Centre, Liverpool, United Kingdom, (2)University of Southampton, Southampton, United Kingdom
A Multi-Basin Residual-Mean Model for the Global Overturning Circulation (91679)
Andrew F Thompson1, Andrew Stewart2 and Tobias Bischoff1, (1)California Institute of Technology, Pasadena, CA, United States, (2)University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, CA, United States
The spatiotemporal structure of diabatic processes governing the evolution of Subantarctic Mode Water in the Southern Ocean (90441)
Ivana Cerovecki, UC San Diego, La Jolla, CA, United States and Matthew R Mazloff, Scripps Institution of Oceanography, La Jolla, CA, United States
