AI23A:
Southern Ocean Air-Sea Exchange and Mixed-Layer Processes I


Session ID#: 36640

Session Description:
The Southern Ocean exchanges freshwater, momentum, heat, carbon and other biogeochemical species between the high-latitude ocean and atmosphere. These air-sea fluxes play important roles in the Earth’s climate system. Many observational and modeling efforts seek to quantify these fluxes and their dependencies. Uncertainties in Southern Ocean air-sea exchange remain high and limit our ability to validate climate models. Circumpolar transport, exchange along the continental margins, and meso-scale variability modify mixed-layer budgets, air-sea fluxes, and freshwater transport. Antarctic scientific stations facilitate long oceanic time series while autonomous platforms increase the geographic density of in situ observations. Models and satellite observations extend and connect observations to reveal underlying dynamics. Developments in observing approaches, data interpretation and numerical simulations offer new possibilities for advancing understanding in ways not previously possible.

This session invites contributions that address surface flux estimates and mixed-layer processes in the Southern Ocean. Contributions addressing observing challenges, defining flux requirements, and/or presenting methodologies are welcome. We seek to bring together observers, modelers, and theorists.

Primary Chair:  Martin Smith Hoecker-Martinez, University of Michigan Ann Arbor, Climate and Space Sciences, Ann Arbor, MI, United States; University of Redlands, Physics, Redlands, CA, United States
Co-chairs:  Sarah T Gille, UCSD, La Jolla, CA, United States, Daniel B Whitt, National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States and Sebastiaan Swart, University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden
Moderators:  Sebastiaan Swart, University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden, Martin Smith Hoecker-Martinez, University of Michigan Ann Arbor, Climate and Space Sciences, Ann Arbor, MI, United States; University of Redlands, Physics, Redlands, CA, United States, Sarah T Gille, Scripps Institution of Oceanography, UC San Diego, La Jolla, CA, United States and Daniel B Whitt, National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States
Student Paper Review Liaisons:  Martin Smith Hoecker-Martinez, University of Michigan Ann Arbor, Climate and Space Sciences, Ann Arbor, MI, United States; University of Redlands, Physics, Redlands, CA, United States and Sarah T Gille, Scripps Institution of Oceanography, UC San Diego, La Jolla, CA, United States
Index Terms:

4207 Arctic and Antarctic oceanography [OCEANOGRAPHY: GENERAL]
4504 Air/sea interactions [OCEANOGRAPHY: PHYSICAL]
4572 Upper ocean and mixed layer processes [OCEANOGRAPHY: PHYSICAL]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Cross-Topics:
  • BN - Biogeochemistry and Nutrients
  • CT - Chemical Tracers, Organic Matter and Trace Elements
  • HE - High Latitude Environments

Abstracts Submitted to this Session:

Atmospheric Constraints on Southern Ocean Air-Sea CO2 Fluxes: Results from the ORCAS Campaign (313858)
Matthew C Long1, Britton B Stephens2, Kathryn McKain3, Colm Sweeney4, Eric A Kort5, Ralph F Keeling6, Andrew R Jacobson7, Eric James Morgan6 and Jonathan D Bent4, (1)National Center for Atmospheric Research, Climate and Global Dynamics, Boulder, CO, United States, (2)National Center for Atmospheric Research, Boulder, CO, United States, (3)Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, (4)Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States, (5)University of Michigan, Department of Climate and Space Sciences and Engineering, Ann Arbor, MI, United States, (6)Scripps Institution of Oceanography, La Jolla, CA, United States, (7)NOAA Boulder, Boulder, CO, United States
Wave Glider observations of air-sea exchange and the ocean mixed layer in the Drake Passage (306388)
James M Thomson, Applied Physics Laboratory University of Washington, Seattle, WA, United States and James B Girton, University of Washington, Applied Physics Laboratory, Seattle, WA, United States
How Many Biogeochemical Argo Floats Are Required to Constrain Air-Sea Exchanges of Carbon and Heat in the Southern Ocean? (309059)
Matthew R Mazloff1, Bruce D Cornuelle1, Sarah T Gille2 and Ariane Verdy3, (1)University of California San Diego, La Jolla, CA, United States, (2)Scripps Institution of Oceanography, La Jolla, CA, United States, (3)Scripps Institution of Oceanography, UC San Diego, La Jolla, CA, United States
Meso- and Submesoscale Motions Enhancing Ventilation at the Polar Front: Results from the ChinStrAP 2 Glider Campaign (307349)
Giuliana Viglione1, Andrew F Thompson1, Janet Sprintall2 and Sebastiaan Swart3, (1)California Institute of Technology, Pasadena, CA, United States, (2)Scripps Institution of Oceanography, La Jolla, CA, United States, (3)University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden
The Impact of Atmospheric Storminess on the Sensitivity of Southern Ocean Circulation to Wind Stress Changes. (308558)
David Roy Munday, British Antarctic Survey, Polar Oceans, Cambridge, United Kingdom and Xiaoming Zhai, University of East Anglia, Norwich, United Kingdom
The impact of subsurface salinity structure on deep mixed layer development in the Southern Ocean (318464)
Alice K DuVivier, University Corporation for Atmospheric Research, Boulder, CO, United States and William Large, NCAR, Boulder, CO, United States

See more of: Air-Sea Interactions