PC14E:
Physical and Biogeochemical Processes in the Southern Ocean: Observations, State Estimation, and Modeling V Posters


Session ID#: 11542

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:  Kyle Armour, Massachusetts Institute of Technology, Cambridge, MA, United States and Irina Marinov, University of Pennsylvania, Department of Earth and Environmental Sciences, Philadelphia, PA, United States
Student Paper Review Liaison:  Igor V Kamenkovich, RSMAS, Miami, FL, 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:

 
PC14E-2097
A Tale of Two Timescales: Weddell Polynya Pathways in the Global Abyssal Oceans (Invited) (88730)
Hannah M Zanowski1,2, Robert Hallberg3 and Jorge L Sarmiento1, (1)Princeton University, Princeton, NJ, United States, (2)Princeton University, Atmospheric and Oceanic Sciences, Princeton, NJ, United States, (3)Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States
 
PC14E-2098
How ocean lateral mixing changes Southern Ocean variability in coupled climate models (Invited) (88990)
Marie-Aude Sabine Pradal, Anand Gnanadesikan and Jordan L Thomas, Johns Hopkins University, Earth and Planetary Sciences, Baltimore, MD, United States
 
PC14E-2099
Regional Variations in Low Frequency Transport Variability of the Southern Ocean (90366)
Jessica Makowski, University of South Florida Tampa, Tampa, FL, United States and Don P Chambers, University of South Florida Tampa, College of Marine Science, Tampa, FL, United States
 
PC14E-2100
Temporal Variability in the Antarctic Polar Front (2002-2014) (88275)
Natalie M Freeman and Nicole S Lovenduski, University of Colorado, Boulder, CO, United States
 
PC14E-2102
Global decadal climate variability driven by Southern Ocean convection (90338)
Anna Cabre, Instituto de Ciencias del Mar, Barcelona, Spain and Irina Marinov, University of Pennsylvania, Department of Earth and Environmental Sciences, Philadelphia, PA, United States
 
PC14E-2103
CO2–Induced Ocean Climate Change around Antarctica in GFDL CM2.5 and CM2.6 (87385)
Paul Goddard1, Stephen Matthew Griffies2 and Jianjun Yin1, (1)University of Arizona, Tucson, AZ, United States, (2)NOAA/GFDL, NJ, United States
 
PC14E-2104
A Two-Timescale Response of the Southern Ocean to Ozone Depletion: Importance of the Background State (90249)
William Seviour, Darryn Waugh and Anand Gnanadesikan, Johns Hopkins University, Baltimore, MD, United States
 
PC14E-2105
The Equatorial Signatures of the Meridional Modes: Dependence on the Mean Climate State (91755)
Honghai Zhang1,2, Amy C Clement3, Clara Deser4, Brian Medeiros4 and Robert A Tomas5, (1)University of Miami, Miami, FL, United States, (2)Princeton University, AOS, Princeton, NJ, United States, (3)University of Miami, RSMAS, Miami, FL, United States, (4)National Center for Atmospheric Research, Boulder, CO, United States, (5)NCAR, Boulder, CO, United States
 
PC14E-2106
Modelled trends in Antarctic sea ice linked to underestimated changes in the westerly wind jet (89288)
Ariaan Purich1,2, Wenju Cai3, Matthew H England1 and Tim Cowan2,4, (1)Climate Change Research Centre UNSW and ARC Centre of Excellence for Climate System Science, Sydney, Australia, (2)CSIRO Oceans and Atmosphere, Aspendale, Australia, (3)Centre for Southern Hemisphere Oceans Research (CSHOR), CSIRO Oceans and Atmosphere, Hobart, Australia, (4)School of Geosciences, University of Edinburgh, Edinburgh, United Kingdom
 
PC14E-2107
Comparing changes in the SAM, westerly jet and Southern Ocean fronts (92755)
Neil C Swart, University of Victoria, Vancouver, BC, Canada
 
PC14E-2108
Rapid variability of Antarctic Bottom Water transport inferred from GRACE (92208)
Carmen Boening, NASA Jet Propulsion Laboratory, Pasadena, CA, United States and Matthew R Mazloff, UC San Diego, La Jolla, CA, United States
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