AOSC Seminar by Dr. Hussein Aluie, 3/17/2022
AOSC Seminar
Dr. Hussein Aluie
University of Rochester
Title: Disentangling the Oceanic Circulation
Abstract:
Large-scale currents and mesoscale eddies pervade the ocean and play a central role in the general circulation and climate. The multi-scale nature of oceanic flow, with scales ranging from O(104) km down to O(1) mm, presents a major difficulty in understanding, modeling, and predicting circulation and mixing. I will discuss an coarse-graining approach we have been developing to unravel these complex flows, which is rooted in Renormalization Group in physics and Large Eddy Simulation in turbulence modeling. The approach is more versatile and powerful than the 'mean-eddy' decomposition traditionally used in physical oceanography, and more broadly applicable than spectral, or Fourier-based, analysis. It allows for understanding and quantifying the dynamics + processes at different scales at every geographic location on the globe. I will present examples on how this has enabled us to probe the cascade of energy across scales, baroclinic instability, wind forcing, and also to measure local power spectra in realistic settings using data from altimetry, scatterometry, reanalysis, and high-resolution models.
Bio:
Hussein is an Associate Professor of Mechanical Engineering at the University of Rochester (UofR) and Staff Scientist at the DOE Laboratory for Laser Energetics. Prior to UofR, he held a postdoctoral appointment in the Center for Nonlinear Studies at Los Alamos National Laboratory. He earned his PhD from Johns Hopkins University and his BSc from the American University of Beirut. His Complex Flow group’s research is inter-disciplinary, spanning oceanography, plasma physics, astrophysics, and applied mathematics. Hussein was born in Beirut, Lebanon and enjoys outdoor sports activities in their many forms, live music, and swing dancing.
Contact: Jacob Wenegrat
If you are not subscribed to seminar announcements and need a link to this online seminar please contact aosc-helper. You can also subscribe to weekly links and announcements below.
AOSC Seminar
Pre-seminar refreshment: N/A
Seminar: 3:30-4:30pm, Room: ATL 2400(only when in-person)
Meet-the-Speaker: 4:30-5:00pm, Room: ATL 3400(only when in-person) [For AOSC Students only]
[ Subscribe to receive seminar announcements | Email aosc-deptseminar@umd.edu to give a seminar ]