Ocean models

Ocean models simulate ocean currents, sea temperature and salinity. meteoblue offers data from the following sources:

  • WW3 (NOAA / NCEP)
  • RTOFS (NOAA / NCEP)

WW3 (NOAA / NCEP)

Field Metadata
Title Wavewatch III
Short Title WW3
Version v5.16, 2017
Theme Sea, ocean, wave, swell, wind wave direction, height of swell waves
Period of Time  
Frequency Daily
Update timelag < 24 hours
Time-resolution hourly
Spatial Type Plate carrée grid (rectangular projection)
Spatial extend global
Spatial resolution 40 km
Coordinate system WGS-84
Earth model WGS-84
Spatial reference system  
Publisher NOAA / NCEP
Date First Published 2017 (first version 1997)
Date Obsolete  
Description For the entire domain of the regional models and for several views of the global model, maps of the significant wave heights (Hs), peak wave periods (Tp) and wind speeds (U10) are available. The peak wave period is estimated as the period corresponding to the highest peak in the one dimensional frequency spectrum of the wave field. Some of the maps also depict wind barbs and peak wave directions. The peak direction is defined as the mean direction in the frequency bin corresponding to Tp. The run date and cycle are shown at the top of each map. The originating model (global, regional) is identified at the top left corner of the plot, the valid time at the top right corner. 00z equals midnight GMT, 12z equals noon GMT, etc. The maps are presented as .gif files. The output locations are marked with yellow squares with red borders wherever the map resolution allows for identification of individual points. Dark green identifies land, grey identifies ice.
Detailed specification http://polar.ncep.noaa.gov/waves/wavewatch/
Homepage URL http://polar.ncep.noaa.gov/waves/index2.shtml?
Security Classification public
Access Level https://www.usa.gov/government-works
License public

RTOFS (NOAA / NCEP)

Field Metadata
Title Real time ocean forecast system
Short Title RTOFS
Version v1.1.2
Theme Sea, ocean, salinity, currents, temperature
Period of Time 2018 to present
Frequency Daily
Update timelag < 24 hours
Time-resolution hourly
Spatial Type Mercator grid and arctic, bipolar patch
Spatial extend global
Spatial resolution 18 km
Coordinate system WGS-84
Earth model WGS-84
Spatial reference system  
Publisher NOAA / NCEP
Date First Published 2017
Date Obsolete  
Description Based on the successful design of the existing operational Atlantic RTOFS model (Mehra and Rivin, 2010), the global ocean forecast system runs once a day and produces 2 days of nowcasts and up to 8 days of forecasts using the daily initialization fields produced at NAVOCEANO using NCODA, a 3D multi-variate data assimilation methodology (Cummings, 2005). The data types assimilated include in situ profiles of temperature and salinity from a variety of sources and remotely sensed SST, SSH and sea-ice concentrations. The operational ocean model configuration has 32 hybrid layers and a horizontal grid size of (4500 x 3298) . The grid has an Arctic bi-polar patch north of 47°N and a Mercator projection south of 47°N through 78.6°S (Figure 1 below). The coastline is fixed at 10 m isobath with open Bering Straits. The potential temperature is referenced to 2000 m depth (sigma-2) and the first level is fixed at 1 m depth. The dynamic ocean model is coupled to a thermodynamic energy loan ice model and uses the KPP mixed layer formulation (Large et al., 1994). The forecast system is forced with 3-hourly momentum, radiation and precipitation fluxes from the operational Global Forecast System (GFS) fields.
Detailed specification Bleck, R., 2002: An oceanic general circulation model framed in hybrid isopycnic-cartesian coordinates. Ocean Modeling, 4, 55-88.
Homepage URL http://polar.ncep.noaa.gov/global/about/
Security Classification public
Access Level https://www.usa.gov/government-works
License public