NorKyst-800 Average current speed and direction

The data set originates from 10 years' average values (2013-2022) of current direction and speed at the surface, respectively, in the water masses (intervals for 5m, 15m, 30m, 50m, 100m, 150m, 200m and 250m), as well as at the seabed. The distance from the seabed with the current model setup ranges from a few cm in shallow water and up to 1.5m when the total depth is 100m or more.

The dataset is available as WMS and WCS services, as well as for download via the Institute of Marine Research's Geoserver https://kart.hi.no/data - select Layer preview and search for the dataset for more download options.

The coastal model NorKyst-800 is a calculation model that simulates, among other things, current, salinity and temperature with 800 meter spatial resolution, in several vertical levels and with high resolution in time for the entire Norwegian coast, based on the model system ROMS (Regional Ocean Modeling System, http://myroms.org). NorKyst-800 has been developed by the Norwegian Institute of Marine Research in collaboration with the Meteorological Institute and Niva ( https://brage.bibsys.no/xmlui/handle/11250/116053).

Date (Creation): 2024-04-30

Date (Publication): 2024-04-30

Date (Revision): 2024-04-30

Purpose: Presentation of 10 years' average current direction and speed on the sea surface, in certain intervals in the water bodies (5m, 15m, 30m, 50m, 100m, 150m, 200m and 250m), and on the seabed.

Status: Completed

Publisher

Institute of Marine Research - Marte L. Strømme

Owner

Institute of Marine Research - Jon Albretsen

Maintenance and update frequency: As needed

GEMET - INSPIRE themes, version 1.0

Oseanografiske geografiske forhold
Hydrografi

Nasjonal tematisk inndeling (DOK-kategori)

Natur

Place

Kysten og norske kystnære havområder

Theme

NorKyst-800
ROMS
havstrøm
modellert
Oseanografi
10 års midlede verdier

Spatial scope

National

Specific usage: Presentation of 10 years' average current direction and speed on the sea surface, in certain intervals in the water bodies (5m, 15m, 30m, 50m, 100m, 150m, 200m and 250m), and on the seabed.

Owner

Access constraints: Other restrictions

Other constraints: Åpne data

Use constraints: Other restrictions

Other constraints: Creative Commons BY 4.0 (CC BY 4.0)

Classification: Unclassified

Spatial representation type: Vector

Distance: 800 m

Metadata language: Norwegian

Topic category

Oceans

Begin date: 0001-01-01

Supplemental Information: Research and management

Unique resource identifier: EPSG:32633

Distribution format

CSV ()

Distributor

Distributor
Havforskningsinstituttet

Units of distribution

Hele landet

OnLine resource

https://kart.hi.no/data/ ( WWW:DOWNLOAD-1.0-http--download )
Shape ()

Distributor

Distributor
Havforskningsinstituttet

Units of distribution

Hele landet

OnLine resource

https://kart.hi.no/data/ ( WWW:DOWNLOAD-1.0-http--download )

Units of distribution: Hele landet

OnLine resource: https://kart.hi.no/data/ ( WWW:DOWNLOAD-1.0-http--download )

Hierarchy level: Dataset

Statement: Havstrøm retning og hastighet er hentet ut fra en ti år lang simulering med ROMS, en tredimensjonal, hydrodynamisk strømmodell. Simuleringsperioden er en dekade fra 2013-2022. Basert på timesverdier er det beregnet middelverdi.

Datasettet er basert på strømvektorer (u_eastward og v_northward), reformatert fra NetCDF med rotasjon til en standard WGS84 UTM33 GeoTIFF-fil ved NMD på HI. Deretter er det beregnet punkter per pixel (ca. 800x800 m), og for hver av disse strømhastighet (wspd = sqrt( u^2 + v ^2) ) og strømretning (wdir = atand(v/(u+0.0001)). Deretter:

if u >= 0.

wdir = 90. - wdir;

else

wdir = 270. - wdir;

end

Dette gir følgende definisjon av strømretning: Strøm mot: N:wdir=0/360, NE:wdir=45, E:wdir=90, SE:wdir=135, S:wdir=180, SW:wdir=225, W:wdir=270, NW:wdir=315).

Script og nærmere beskrivelse er tilgjengelig ved henvendelse til datahjelp@hi.no. datahjelp@hi.no Script og nærmere beskrivelse er tilgjengelig ved henvendelse til datahjelp@hi.no.