2004 LOM Workshop

Tuesday 10:20 - 11:30 a.m. Poster Session

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Comparison of HYCOM with terrain-following ocean models in two idealized experiments

Valerie Garnier, Mohamed Iskandarani, Eric Chassignet, Alan Wallcraft
Rosenstiel School of Marine and Atmospheric Science, University of Miami
vgarnier@rsmas.miami.edu

ABSTRACT

HYCOM simulations are compared with those of terrain-following ocean models on simple idealized standardized tests. The emphasis is on characterizing the hybrid coordinates system in various oceanographic situations. Two tests are considered here: a gravity-adjustment and a downwelling-upwelling experiment. The gravity adjustment problem tests the tracer advections in the model while the other stresses the terrain-following aspects. For the gravity adjustment, good behavior is seen with different advection scheme although there are additional issues with conservation. The downwelling-upwelling experiment shows sensitivity to the choice of vertical coordinates.

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LOM Users' Workshop, February 9-11, 2004