[Eoas-seminar] This THURSDAY @3:30, gfdi student seminar: "North Atlantic Vorticity Budget and the Gulf Stream" - Joe Schoonover

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Tue May 19 10:12:27 EDT 2015


We will have a gfdi student seminar at 3:30pm on Thursday May 21, 2015 
in the Melvin Stern Seminar Room, 018 Keen Building 
<http://gfdi.fsu.edu/location>.  The gfdi student seminars discuss 
topics in fluid dynamics and its applications ranging from mathematics, 
meteorology, oceanography, the Earth sciences, engineering, and 
astrophysics.

Joe Schoonover - "*North Atlantic Vorticity Budget and the Gulf Stream*"
The Gulf Stream separation is a notoriously difficult feature to 
accurately simulate in general circulation models. The Community Earth 
System Model suffers from sea-surface temperature biases upwards of 7 
degC due to the unphysical northward separation of the modelled Gulf 
Stream. Results from an intermodel comparison study are presented which 
motivate the hypothesis that the Gulf Stream separation relies on local 
dynamics as opposed to global vorticity and mass balance constraints. 
Models which produce a more northerly separation are shown to exhibit 
more viscous local vorticity balances. Of the local mechanisms suggested 
in oceanographic literature, it is argued that the steepening of the 
continental shelf in the vicinity of Cape Hatteras plays a pivotal role 
in the Gulf Stream separation.

Facebook Event: https://www.facebook.com/events/838476176208231/
Join the gfd seminar mailing list here: 
https://lists.fsu.edu/mailman/listinfo/gfdiseminar
Past presentations and a preliminary schedule can be found here: 
http://gfdi.fsu.edu/Seminar/

Thanks,
The Organizers
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