Set II: Products from the Deterministic Ocean Wave Model

The following sub-sets are available from the Deterministic Ocean Wave Model:

• II-i: Global ocean wave model
• II-ii: European waters ocean wave model

For a description, see Meteorological Bulletin M3.2 User Guide to ECMWF Products.

II-i: Global ocean wave model

The products are provided in GRIB code or in plotted form. The plots are derived from the GRIB code without further processing.

1.1 Parameters

• Forecast and Analysis fields
  
  • 2D wave spectra (2DFD)
  • Mean direction of total swell (MDTS)
  • Mean direction of wind waves (MDWW)
  • Mean period of total swell (MPTS)
  • Mean period of wind waves (MPWW)
  • Mean wave direction (MWD)
  • Mean wave period (MWP)
  • Mean wave period based on second moment (MP2)
  • Mean wave period based on second moment for swell (P2PS)
  • Mean wave period based on second moment for wind waves (P2WW)
  • Peak period of 1D-spectra (PP1D)
  • Significant height of total swell (SHTS)
  • Significant height of wind waves (SHWW)
  • Significant wave height (SWH)

Due to constraints imposed by GRIB the 2D wave spectra (2DFD) is coded in 36 frequencies and 36 directions, resulting in a total of 1296 fields.

1.2 Product resolution

1.3 Forecast

1.3.1 Forecast time-steps

T+3h to T+144h at 3-hour intervals and T+150h to T+240h at 6-hour intervals T+6h to T+120h at 6-hour intervals for 2D wave spectra (2DFD)

1.3.2 Base times

• 00 UTC, 12 UTC

1.4 Analysis

1.4.1 Analysis times

• 00 UTC, 06 UTC, 12 UTC, 18 UTC

II-ii: European waters ocean wave model

The products are provided in GRIB code or in plotted form. The plots are derived from the GRIB code without further processing.

2.1 Parameters

• Forecast and Analysis fields
  
  • 2D wave spectra (2DFD)
  • Maximum individual wave height (HMAX)
  • Mean direction of total swell (MDTS)
  • Mean direction of wind waves (MDWW)
  • Mean period of total swell (MPTS)
  • Mean period of wind waves (MPWW)
  • Mean wave direction (MWD)
  • Mean wave period (MWP)
  • Mean wave period based on second moment (MP2)
  • Mean wave period based on second moment for swell (P2PS)
  • Mean wave period based on second moment for wind waves (P2WW)
  • Peak period of 1D-spectra (PP1D)
  • Period corresponding to maximum individual wave height (TMAX)
  • Significant height of total swell (SHTS)
  • Significant height of wind waves (SHWW)
  • Significant wave height (SWH)

Due to constraints imposed by GRIB the 2D wave spectra (2DFD) is coded in 36 frequencies and 36 directions, resulting in a total of 1296 fields.

2.2 Product resolution

2.3 Forecast

2.3.1 Forecast time-steps

T+3h to T+72h at 3-hour intervals and T+78h to T+120h at 6-hour intervals T+6h to T+120h at 6-hour intervals for 2D wave spectra (2DFD)

2.3.2 Base times

• 00 UTC, 12 UTC

2.4 Analysis

2.4.1 Analysis times

• 00 UTC, 06 UTC, 12 UTC, 18 UTC