Global Ocean Waves Analysis and Forecast

Dataset Availability

2022-06-01T00:00:00Z–2025-10-23T00:00:00Z

Dataset Provider

Copernicus Marine Service Global Ocean Waves and Forecasts

Earth Engine Snippet

ee.ImageCollection("COPERNICUS/MARINE/WAV/ANFC_0_083DEG_PT3H")

Cadence

3 Hours

Tags

copernicus forecast hourly marine oceans

Description

The operational global ocean analysis and forecast system of Meteo-France with a resolution of 1/12 degree is providing daily analyses and 10 days forecasts for the global ocean sea surface waves. This product includes 3-hourly instantaneous fields of integrated wave parameters from the total spectrum (significant height, period, direction, Stokes drift,...etc), as well as the following partitions: the wind wave, the primary and secondary swell waves.

The global wave system of Meteo-France is based on the wave model MFWAM which is a third generation wave model. MFWAM uses the computing code ECWAM-IFS-38R2 with dissipation terms developed by Ardhuin et al. (2010). The model MFWAM was upgraded on November 2014 thanks to improvements obtained from the European research project 'my wave' ,(Janssen et al. 2014). The model mean bathymetry is generated by using 2-minute gridded global topography data ETOPO2/NOAA. Native model grid is irregular with decreasing distance in the latitudinal direction close to the poles. At the equator the distance in the latitudinal direction is more or less fixed with grid size 1/10 degrees. The operational model MFWAM is driven by 6-hourly analysis and 3-hourly forecasted winds from the IFS-ECMWF atmospheric system. The wave spectrum is discretized in 24 directions and 30 frequencies starting from 0.035 Hz to 0.58 Hz. The model MFWAM uses the assimilation of altimeters with a time step of 6 hours. The global wave system provides analysis 4 times a day, and a forecast of 10 days at 0:00 UTC. The wave model MFWAM uses the partitioning to split the swell spectrum in primary and secondary swells.

GLOBAL_ANALYSISFORECAST_WAV_001_027, implemented by Mercator Ocean International. It provides a comprehensive overview of the global ocean wave analysis and forecasting system produced by Meteo-France. The system delivers aggregated analyses and a 10-day forecast, updated twice-daily, including various integrated wave parameters such as significant wave height, period, direction, and Stokes drift for both the total wave spectrum and partitioned waves (wind wave, primary and secondary swell).

Bands

Pixel Size
9276.62 meters

Bands

Name	Units	Pixel Size	Description
VHM0	m	meters	Spectral significant wave height
VHM0_WW	m	meters	Significant wave height of wind sea
VTM01_SW1	seconds	meters	Spectral moments (0,1) wave period of primary swell
VTM01_SW2	seconds	meters	Spectral moments (0,1) wave period of secondary swell
VTM10	seconds	meters	Spectral moments (-1,0) wave period
VHM0_SW1	m	meters	Significant wave height of primary swell
VHM0_SW2	m	meters	Significant wave height of secondary swell
VTPK	seconds	meters	Wave period at spectral peak
VSDX	m/s	meters	Stokes drift U component
VSDY	m/s	meters	Stokes drift V component
VCMX	m	meters	Maximum crest trough wave height
VTM02	seconds	meters	Spectral moments (0,2) wave period
VTM01_WW	seconds	meters	Spectral moments (0,1) wave period of wind sea
VMDR_WW	deg	meters	Mean wave direction of wind sea
VMDR_SW1	deg	meters	Mean wave direction of primary swell
VMDR_SW2	deg	meters	Mean wave direction of secondary swell
VMDR	deg	meters	Mean wave direction
VPED	deg	meters	Peak wave direction
VMXL	m	meters	Height of the highest crest

Image Properties

Image Properties

Name	Type	Description
forecast_hours	DOUBLE	For observations in the future, the number of hours between the observation and run times.
observation_time	DOUBLE	The valid time of the observation, in milliseconds.
observation_type	STRING	Observation type: forecast: Future model prediction (includes same day forecasts as well) hindcast: Past model reconstruction
run_time	DOUBLE	The time the observation was produced, in milliseconds.

Terms of Use

Terms of Use

This dataset is released for use under Service Level Agreement (SLA), using the acronym "CMEMS" or the shortened name "Copernicus Marine Service" both denote the E.U. Copernicus Marine Environment Monitoring Service. Highlights and key features of the licence are provided in this document License

Citations

Citations:

• E.U. Copernicus Marine Service Information (2024). Global Ocean Waves Analysis and Forecast. doi.org/10.48670/moi-00017

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Code Editor (JavaScript)

var dataset = ee.ImageCollection("COPERNICUS/MARINE/WAV/ANFC_0_083DEG_PT3H")
                  .filter(ee.Filter.date('2024-07-01', '2024-07-15'));
var significantWaveHeight = dataset.select('VHM0');
var significantWaveHeightVis = {
  min: 0,
  max: 10,
  palette: ['0000ff', '00ffff', 'ffff00', 'ff0000', 'ffffff'],
};
Map.setCenter(-140.5, 52.2, 1);
Map.addLayer(significantWaveHeight, significantWaveHeightVis, 'Significant Wave Height');

Open in Code Editor

Global Ocean Waves Analysis and Forecast

The operational global ocean analysis and forecast system of Meteo-France with a resolution of 1/12 degree is providing daily analyses and 10 days forecasts for the global ocean sea surface waves. This product includes 3-hourly instantaneous fields of integrated wave parameters from the total spectrum (significant height, period, direction, Stokes …

COPERNICUS/MARINE/WAV/ANFC_0_083DEG_PT3H, copernicus,forecast,hourly,marine,oceans

2022-06-01T00:00:00Z/2025-10-23T00:00:00Z

-90 -180 90 180

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