PO14B:
Multiscale Topographic Effects on Large-Scale Flow: From Wakes and Lee Waves to Small-Scale Turbulence and Mixing III Posters


Session ID#: 27719

Session Description:
There has been a resurgence in research on stratified flow over topography in the ocean, with recent evidence suggesting its importance on the large-scale ocean circulation through topographic form drag, turbulence and mixing. The interaction of large-scale, low-frequency geostrophic currents with steep topography produces a rich submesoscale and mesoscale vorticity field that initiates a cascade of energy down to small scales and turbulence. Over more gentle topography, lee waves arise and may break nearby or propagate and eventually break elsewhere, leading to local and remote turbulence and mixing. Together, wakes and lee waves significantly impact the topographic form drag and play an important role in energy and momentum budgets of the low-frequency flow. Despite extensive research on stratified flow over topography, our ability to predict and parameterize oceanic flow at spatial scales comparable to the topography is lacking. This session solicits abstracts employing modeling, observations, or theory to link basin-scale flows to topographic lee waves/wake effects, thereby advancing the state of knowledge of (a) the science of flow at topography, boundary layers, and downscaling and (b) models and forecasts of the relevant processes.
Primary Chair:  Oliver B Fringer, Stanford University, Civil and Environmental Engineering, Stanford, CA, United States
Co-chairs:  Ganesh Gopalakrishnan1, Ruth C Musgrave2 and Gunnar Voet1, (1)Scripps Institution of Oceanography, La Jolla, CA, United States(2)Massachusetts Institute of Technology, Department of Mechanical Engineering, Cambridge, MA, United States
Moderators:  Ruth C Musgrave1, Gunnar Voet2, Oliver B Fringer3 and Ganesh Gopalakrishnan2, (1)Woods Hole Oceanographic Institution, Woods Hole, MA, United States(2)Scripps Institution of Oceanography, La Jolla, CA, United States(3)Stanford University, Civil and Environmental Engineering, Stanford, CA, United States
Student Paper Review Liaisons:  Ganesh Gopalakrishnan, Scripps Institution of Oceanography, La Jolla, CA, United States and Oliver B Fringer, Stanford University, Civil and Environmental Engineering, Stanford, CA, United States
Index Terms:
Cross-Topics:
  • OM - Ocean Modeling
  • PS - Physical Oceanography: Mesoscale and Smaller

Abstracts Submitted to this Session:

Brad Perfect, University of Washington Seattle, Seattle, WA, United States, James J Riley, University of Washington Seattle Campus, Seattle, WA, United States and Nirnimesh Kumar, University of Washington, Civil and Environmental Engineering, Seattle, WA, United States
Thomas Peacock, MIT, Cambridge, MA, United States, Ruth C Musgrave, Massachusetts Institute of Technology, Department of Mechanical Engineering, Cambridge, MA, United States, Jae-Hun Park, Inha University, Department of Marine Science and Biological Engineering, Incheon, South Korea and Magdalena Andres, WHOI, Woods Hole, MA, United States
Masoud Jalali and Sutanu Sarkar, University of California San Diego, La Jolla, CA, United States
Gunnar Voet1, Matthew H Alford1, Jennifer A MacKinnon1, Ali Mashayek1 and Jonathan D Nash2, (1)Scripps Institution of Oceanography, La Jolla, CA, United States, (2)Oregon State Univ, Corvallis, OR, United States
Idalia Alicia Machuca, University of British Columbia, Department of Earth, Ocean and Atmospheric Sciences, Vancouver, BC, Canada and Susan Elizabeth Allen, Univ British Columbia, Earth, Ocean and Atmospheric Sciences, Vancouver, BC, Canada
Lena Schulze and Kevin G Speer, Florida State University, Tallahassee, FL, United States