Boulder Fluid and Thermal Sciences Seminar Series

Tuesday, April 12, 2016

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3:30pm-4:30pm (refreshments at 3:15pm)
Bechtel Collaboratory in the Discovery Learning Center (DLC)
University of Colorado at Boulder

Add to Calendar 04/12/2016 3:30:00 PM 04/12/2016 4:30:00 PM 9 Boulder Fluid and Thermal Sciences Seminar Discovery Learning Center, University of Colorado, Boulder MM/DD/YYYY

Coherent structures in the ocean: manifestation, identification and applications

Cheryl Harrison National Center for Atmospheric Research

Following the visualization of the ocean surface by satellites in the 1970's, and the surprise that coherent vortices dominated the mesoscale circulation, great progress has been made in understanding both the dynamics and biogeochemical/ecosystem effects of mesoscale ocean eddies. However, the role of these eddies in the global carbon cycle and how they impact ecosystem dynamics is highly uncertain, and the subject of much current observational and modeling effort. Here I report on recent advances in identifying eddies and their associated transport structures from applied dynamical systems theory, the so-called Lagrangian coherent structure (LCS) approach. Applications of this methodology using observations and models of the California Current system, as well as the implications for ecosystem effects of coastal transport will be highlighted. For this group, I will also include some unpublished work on quantifying mixing efficiency, how this relates to LCS, and the phenomenology of “unmixing” events for buoyant particles in a coastal ocean model.


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Support from Herbert and Karen Vogel is gratefully acknowledged through a Vogel Faculty Fellowship at the University of Colorado, Boulder.



The seminar is held at the Discovery Learning Center (DLC) at the University of Colorado. Parking is free with a permit, which is provided at the seminar. The location for parking is shown in the map below.

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