PO41B:
Lagrangian Perspectives on Ocean Circulation and Mixing I


Session ID#: 8440

Session Description:
Advances in Lagrangian and semi-Lagrangian instrumentation have made it easier to sample the ocean in two and three dimensions, and at scales down to a meter or less.  Analyses of the trajectories obtained from these instruments is leading to a deeper understanding of dispersion, turbulent and chaotic mixing, and coherent features. At the same time, advances in dynamical systems theory have made it possible to map out coherent Lagrangian structures, such as material boundaries of eddies, in ocean models, and to perform direct assimilation of Lagrangian trajectories into models, all in the presence of complex time dependence.  This session will bring together, and stimulate a lively discussion among, investigators from the various communities (instrument design, field programs, applied mathematics, and data assimilation) that have supported progress in these areas.
Primary Chair:  Lawrence J Pratt, WHOI, Woods Hole, MA, United States
Chairs:  Joseph H Lacasce, University of Oslo, Meteorology and Oceanography, Oslo, Norway and Laura Slivinski, WHOI, Woods Hole, MA, United States
Moderators:  Lawrence J Pratt, Woods Hole Oceanographic Institution, Woods Hole, MA, United States and Laura Slivinski, Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States
Student Paper Review Liaisons:  Joseph H Lacasce, University of Oslo, Meteorology and Oceanography, Oslo, Norway and Laura Slivinski, Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States
Index Terms:

4512 Currents [OCEANOGRAPHY: PHYSICAL]
4520 Eddies and mesoscale processes [OCEANOGRAPHY: PHYSICAL]
4568 Turbulence, diffusion, and mixing processes [OCEANOGRAPHY: PHYSICAL]
4594 Instruments and techniques [OCEANOGRAPHY: PHYSICAL]
Co-Sponsor(s):
  • A - Air-sea Interactions and Upper Ocean Processes
  • IS - Instrumentation & Sensing Technologies
  • OD - Ocean Observing and Data Management
  • TP - Turbulent Processes

Abstracts Submitted to this Session:

PO41B-01
Nonlocal dispersion in the Gulf of Mexico (87057)
Francisco J Beron-Vera, University of Miami, Miami, FL, United States and Joseph H Lacasce, University of Oslo, Meteorology and Oceanography, Oslo, Norway
PO41B-02
Material transport in a wind and buoyancy forced mixed layer (87733)
Jean A. Mensa1,2, Tamay Özgökmen1, Andrew C Poje3 and Jorg Imberger1, (1)University of Miami, Miami, FL, United States, (2)Yale University, Geology and Geophysics, New Haven, CT, United States, (3)College Staten Island, Department of Mathematics, Staten Island, NY, United States
PO41B-03
Disentangling Mesoscale Strain and Internal Waves Using Surface Drifters (91624)
Jeffrey J Early, NorthWest Research Associates Redmond, Redmond, WA, United States, Marie-Pascale Lelong, Northwest Research Associates, Redmond, WA, United States, K. Shafer Smith, New York University, New York, NY, United States, Miles A Sundermeyer, School Marine Sci. & Tech., New Bedford, MA, United States and Adam M Sykulski, University College London, Department of Statistical Science, London, United Kingdom
PO41B-04
Analysis of Inertial Oscillations in the Global Surface Drifter Dataset (92786)
Jonathan M Lilly1, Adam M Sykulski2, Jeffrey J Early3, Shane Elipot4, Rick Lumpkin5, Renellys C Perez6 and Sofia C Olhede2, (1)NorthWest Research Associates, Redmond, WA, United States, (2)University College London, Department of Statistical Science, London, United Kingdom, (3)NorthWest Research Associates Redmond, Redmond, WA, United States, (4)RSMAS, Miami, FL, United States, (5)NOAA Miami, Miami, FL, United States, (6)UM/CIMAS & NOAA/AOML, Miami, FL, United States
PO41B-05
Lagrangian clustering detection of internal wave boluses (89136)
Michael Allshouse1, G. Salvador Vieira1 and Harry L Swinney2, (1)Northeastern University, Department of Mechanical and Industrial Engineering, Boston, MA, United States, (2)Center for Nonlinear Dynamics, Department of Physics, University of Texas at Austin, Austin, TX, United States
PO41B-06
Deducing kinetic energy spectra from pair dispersion (89457)
Joseph H Lacasce, University of Oslo, Meteorology and Oceanography, Oslo, Norway
PO41B-07
3-D Export Pathways from the Southern Ocean (91409)
Ewa Karczewska1,2, Peter Haynes1, Andrew Meijers2, Emily Shuckburgh2, Dan Jones2 and Jean-baptiste Sallee3, (1)University of Cambridge, Department of Applied Mathematics and Theoretical Physics, Cambridge, United Kingdom, (2)NERC British Antarctic Survey, Cambridge, United Kingdom, (3)University Pierre and Marie Curie Paris VI, Paris, France
PO41B-08
Impacts of Non-Divergence-Free Flows on the Coalescence of Initially Distant Buoyant Scalars on a Turbulent Free Surface (92988)
Kenneth Pratt, University of Colorado, Boulder, Civil Engineering and John P Crimaldi, University of Colorado at Boulder, Civil, Environmental, and Architectural Engineering, Boulder, CO, United States
See more of: Physical Oceanography/Ocean Circulation