PC13A:
Physical and Biogeochemical Processes in the Southern Ocean: Observations, State Estimation, and Modeling III


Session ID#: 11508

Session Description:
The Southern Ocean, south of 30°S, occupies just under one-third of the surface ocean area, yet it accounts for a disproportionate share of the vertical exchange of heat, carbon and nutrients between the deep ocean, the surface ocean and the atmosphere. Understanding the physical and biogeochemical processes that determine the Southern Ocean’s mean state, variability, and response to external forcing is critical to our understanding of the climate system as a whole, and for reducing uncertainties in climate projections. Recent advances in data collection, state estimation and modeling capabilities have finally established the necessary infrastructure to permit a deeper understanding of the Southern Ocean’s processes that are relevant to climate. Working toward this goal, this session will present new results based on modeling and/or observational efforts that investigate biogeochemical processes, large-scale and mesoscale circulation, mixing, as well as ocean-atmosphere and ocean-ice interactions.
Primary Chair:  Igor V Kamenkovich, RSMAS, Miami, FL, United States
Chairs:  Joellen L Russell, University of Arizona, Tucson, AZ, United States, Stephen Riser, University of Washington, School of Oceanography, Seattle, WA, United States, Ariane Verdy, Scripps Institution of Oceanography, UC San Diego, La Jolla, CA, United States, Anna Cabre, Instituto de Ciencias del Mar, Barcelona, Spain, Kyle Armour, Massachusetts Institute of Technology, Cambridge, MA, United States, Torge Martin, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany and Irina Marinov, University of Pennsylvania, Department of Earth and Environmental Sciences, Philadelphia, PA, United States
Moderators:  Joellen L Russell, University of Arizona, Tucson, AZ, United States and Irina Marinov, University of Pennsylvania, Department of Earth and Environmental Sciences, Philadelphia, PA, United States
Student Paper Review Liaison:  Kyle Armour, Massachusetts Institute of Technology, Cambridge, MA, United States
Index Terms:

1635 Oceans [GLOBAL CHANGE]
4207 Arctic and Antarctic oceanography [OCEANOGRAPHY: GENERAL]
4532 General circulation [OCEANOGRAPHY: PHYSICAL]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Co-Sponsor(s):
  • B - Biogeochemistry and Nutrients
  • OD - Ocean Observing and Data Management
  • PO - Physical Oceanography/Ocean Circulation

Abstracts Submitted to this Session:

PC13A-01
The Seasonal Cycle of Carbon in the Southern Pacific Ocean Observed from Biogeochemical Profiling Floats (92151)
Jorge L Sarmiento1, Alison R Gray2, Kenneth S Johnson3, Brendan Carter4, Stephen Riser2, Lynne D Talley5 and Nancy L Williams6, (1)Princeton University, Princeton, NJ, United States, (2)University of Washington, School of Oceanography, Seattle, WA, United States, (3)Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States, (4)NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States, (5)University of California San Diego, La Jolla, CA, United States, (6)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States
PC13A-02
Contrasting views of the annual carbon cycle observed with SOCCOM profiling floats in the Pacific and the Atlantic sectors of the Southern Ocean: A glimpse of future views provided by global observing systems (93186)
Kenneth S Johnson1, Jorge L Sarmiento2, Stephen Riser3, Lynne D Talley4, Alison R Gray3, Nancy L Williams5, Hans W Jannasch1, Luke J Coletti1 and SOCCOM, (1)Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States, (2)Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, NJ, United States, (3)University of Washington, School of Oceanography, Seattle, WA, United States, (4)University of California San Diego, La Jolla, CA, United States, (5)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States
PC13A-03
Empirical Algorithms to Predict pH and Aragonite Saturation State on SOCCOM Biogeochemical Argo Floats in the Pacific Sector of the Southern Ocean (92852)
Nancy L Williams, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, Laurie W Juranek, Oregon State University, Corvallis, OR, United States, Richard A Feely, NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States, Kenneth S Johnson, Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States and Joellen L Russell, University of Arizona, Tucson, AZ, United States
PC13A-04
Observing System Simulation Experiments in the Southern Ocean for the SOCCOM Project. (89740)
Angelique C Haza, University of Miami, Ocean Sciences, Miami, FL, United States, Igor V Kamenkovich, RSMAS, Miami, FL, United States, Alison R Gray, University of Washington, School of Oceanography, Seattle, WA, United States and Carolina O. Dufour, Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, NJ, United States
PC13A-05
Estimating the Southern Ocean Air-Sea Carbon Exchanges (91884)
Matthew R Mazloff, UC San Diego, La Jolla, CA, United States, Ariane Verdy, Scripps Institution of Oceanography, UC San Diego, La Jolla, CA, United States and Bruce D Cornuelle, University of California San Diego, La Jolla, CA, United States
PC13A-06
Mediation of air-sea CO2 fluxes by mesoscale eddies in the Southern Ocean (88343)
Hajoon Song, John Marshall and Ute Hausmann, Massachusetts Institute of Technology, Cambridge, MA, United States
PC13A-07
Estimate chlorophyll a and POC concentrations in the Southern Ocean (88680)
Nils Haëntjens, University of Maine, Orono, ME, United States, Emmanuel Boss, University of Maine, School of Marine Science, Orono, ME, United States and Lynne D Talley, University of California San Diego, La Jolla, CA, United States
PC13A-08
Southern Ocean drivers of Equatorial Pacific O2 changes over the 21st century in a large ensemble suite with GFDL's ESM2M earth system model (92557)
Keith B Rodgers, IBS Center for Climate Physics, Busan, South Korea, Young Ro Yi, Princeton University, Geosciences, Princeton, NJ, United States, Thomas L Froelicher, Universtity of Bern, Climate and Environmental Physics, Bern, Switzerland, John P Dunne, Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States and Hannah M Zanowski, Princeton University, Princeton, NJ, United States
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