Date (Publication)

2012-05-04

Date (Creation)

0001-01-01

Date (Revision)

0001-01-01

Code

havvarsler_nordiske

Purpose

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. The model runs on a supercomputer, and provides forecasts of sea level, currents, salinity and temperature. 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 are further applied in emergency models that simulate pathways of oil slicks and drifting objects (Search And Rescue).

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Meteorologisk institutt		kristinlyng@met.no	Resource provider
Norwegian Meteorological Institute		promo@met.no	Owner
Norwegian Meteorological Institute		promo@met.no	Publisher

Maintenance and update frequency

Continual

GEMET - INSPIRE themes, version 1.0

• Oceanographic geographical features

Nasjonal inndeling i geografiske initiativ og SDI-er

• Inspire

• Norway Digital

• Geodata Act

• National public data catalog

Nasjonal tematisk inndeling (DOK-kategori)

• Marine activities

Place

• Arktis

• Nordsjøen

• Barentshavet

• Atlanterhavet

Theme

• sjøtemperatur

• saltholdighet

• strømfart

• strømhastighet

Spatial scope

• National

User contact info

Organisation name	Individual name	Electronic mail address	Role
			Owner

Use limitation

No conditions apply

Access constraints

Other restrictions

Other constraints

Åpne data

Use constraints

Other restrictions

Other constraints

Creative Commons BY 3.0 (CC BY 3.0)

Other constraints

kildehenvisning påkrevd

Classification

Unclassified

Spatial representation type

Grid

Denominator

20000

Language

Norwegian

Topic category

• Oceans

Begin date

0001-01-01

Supplemental Information

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). ROMS has a large selection of physical and numerical options that can be specified by the user. These options are activated trough a C-preprocessor, and gives the user a selection of different turbulence closure models to parametrize small-scale turbulent processes, various bottom boundary layer dynamics, ecosystem modules, and a sea ice module. The model uses a S-coordinate system for the vertical coordinates. This enables the user to adjust how the resolution is distributed in the vertical. The area for which we run the model is characterized by large depth fluctuations. Therefore it is advantageous to use a s-type coordinate system model compared to a more conventional z-coordinate model, since the s-coordinate model has a better simulation of the top and bottom mixed layers. The horizontal grid is staggered using the Arakawa C-grid, and the primitive equations for the prognostic variables u, v and rho are evaluated in different points. There is also a split-explicit time-stepping algorithm of the barotropic (fast) and baroclinic (slow) modes, where the barotropic modes has a much shorter time step than the baroclinic modes. This substantially reduces the computational time required by the model. A thorough description of the ROMS model is given by 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.

Unique resource identifier

EPSG:4326

Distribution format

Name	Version
NetCDF	4.0

OnLine resource

Protocol	Linkage	Name
WWW:DOWNLOAD-1.0-http--download	http://thredds.met.no/thredds/dodsC/sea/nordic4km/24h/aggregate_be

Hierarchy level

Dataset

Statement

No lineage available

Metadata

File identifier

0f2faf58-e1e8-4718-bb9b-b512c0f2520f XML

Metadata language

Norwegian

Hierarchy level

Dataset

Date stamp

2023-11-15

Metadata standard name

ISO19115

Metadata standard version

2003

Metadata author

Organisation name	Individual name	Electronic mail address	Role
Norwegian Meteorological Institute	Øyvind Sætra	oyvind.saetra@met.no	Point of contact

Other language

Language	Character encoding
English	UTF8