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Comparisons of ROMS, HYCOM and POM on the Norwegian shelf: analysis of the CONMAN hindcast simlutations
Bertino L., J. H. LaCasce, L.P. Røed, P. Budgell, H. Engedahl, C. Hansen, J. Johannessen, E. Svendsen and B. Ådlandsvik.
NERSC, Bergen, Norway
(Abstract received 07/13/2007 for session X)
ABSTRACT
We compare the results from a three year simulation with the three eddy-permitting numerical ocean models MIPOM, ROMS and HYCOM, for a limited area of the northeastern Atlantic Ocean. The forcing, boundary conditions and model set ups were chosen to be as similar as possible. We validate the model velocities by comparing them to those derived from in situ data, from current meters and from satellite altimetry. We find that the MIPOM and HYCOM velocities are consistently too weak, and that their means deviate from the observed means in both path and direction, and MIPOM more so than HYCOM. The ROMS velocities are more energetic and compare more favorably with in situ observations, as do the ROMS-derived means. We believe that the success of ROMS is due its more sophisticated numerics.
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2007 LOM Workshop, Bergen, Norway, August 20-22, 2007