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Abstract:
This ocean model is operated at 4km resolution covering the Nordic Seas.
This specific dataset provides daily mean information at several levels
in the ocean. This is the second version of the Nordic4 setup.
A numerical model is applied to describe the dynamics of the oceans,
such as sea level variations (tides and storm surge), movements in the
water column (currents) and the salinity and temperature. To simulate
the ocean, a 3-D grid is applied with different sizes, i.e., small grids
for fine scale or detailed calculations, and larger or coarser grids to
cover larger areas (and depth). The model runs on a supercomputer, and
provides forecasts of sea level, currents, salinity and temperature for
a time-range between 66 (2.75 days) and 240 hours (10 days). The model
is run operationally, i.e, in a "24/7/365" environment to provide a
99.5% stability on a yearly basis. Currents from the model is further
applied in emergency-models that simulates pathways of oil slicks and
drifting objects (Search And Rescue).
The ocean model used is the Regional Ocean Modeling System (ROMS). This
is a three-dimensional, free-surface, terrain-following numerical model
that solve the Reynolds-averaged Navier-Stokes equations using the
hydrostatic and Boussinesq assumptions (Haidvogel et al., 2008).
Haidvogel, D. B., H. Arango, W. P. Budgell, B. D. Cornuelle, E.
Curchitser, E. Di Lorenzo, K. Fennel, W. R. Geyer, A. J. Hermann, L.
Lanerolle, J. Levin, J. C. McWilliams, A. J. Miller, A. M. Moore, T. M.
Powell, A. F. Shchepetkin, C. R. Sherwood, R. P. Signell, J. C. Warner,
and J. Wilkin, Ocean forecasting in terrain-following coordinates:
Formulation and skill assessment of the Regional Ocean Modeling System,
JOURNAL OF COMPUTATIONAL PHYSICS, 227, 3595–3624, 2008.