43r1: Significant wave height of all waves with periods within the inclusive range from 10 to 12 seconds, Significant wave height of all waves with periods within the inclusive range from12 to 14 seconds, Significant wave height of all waves with periods within the inclusive range from 14 to 17 seconds, Significant wave height of all waves with periods within the inclusive range from 17 to 21 seconds, Significant wave height of all waves with periods within the inclusive range from 21 to 25 seconds, Significant wave height of all waves with periods within the inclusive range from 25 to 30 seconds, Wave energy flux mean direction, Wave energy flux magnitude

HRES-WAM (High RESolution WAve Model) is coupled to the atmospheric model (HRES) while HRES-SAW (High RESolution Stand Alone Wave model) is run as a standalone model.

HRES-WAM and HRES-SAW offer the same parameters globally. However, the resolution and the dissemination schedule are different.

## Domain

**HRES-WAM:**Global**HRES-SAW**: Between latitudes -78 and 90

Both HRES-WAM and HRES-SAW models computes between the latitudes -78 and 90. For HRES-WAM, the output grid is artificially extended to -90.

## Product resolution

**HRES-WAM:**0.125° x 0.125° lat/long grid or any multiple thereof (global or sub-area)**HRES-SAW**: 0.1° x 0.1° lat/long grid or any multiple thereof (global or sub-area)

## Dissemination schedule times

**HRES-WAM**

Analysis 06/12 - 12 UTC based Forecast time | Time available | Analysis 18/00 - 00 UTC based forecast time | Time available |
---|---|---|---|

Analysis 06:00 | 17:35 | Analysis 18:00 | 05:35 |

Analysis 12:00 | 17:40 | Analysis 00:00 | 05:40 |

Forecast day 1 | 17:52 | Forecast day 1 | 05:52 |

Forecast day 10 | 18:55 | Forecast day 10 | 06:55 |

**HRES-SAW**

Analysis 06/12 - 12 UTC based Forecast time | Time available | Analysis 18/00 00 UTC based forecast time | Time available |
---|---|---|---|

Analysis 06:00 | 19:20 | Analysis 18:00 | 07:20 |

Analysis 12:00 | 19:21 | Analysis 00:00 | 07:21 |

Forecast day 1 | 19:23 | Forecast day 1 | 07:23 |

Forecast day 5 | 19:35 | Forecast day 5 | 07:35 |

Forecast day 10 | 19:45 | Forecast day 10 | 07:45 |

## Forecasts steps and base time (unless otherwise specified in the list)

Forecast time step | Base time | |
---|---|---|

Analysis | 00 UTC, 06 UTC, 12 UTC, 18 UTC | |

T+0 to T+144 | 3-hourly | 00 UTC and 12 UTC |

T+150h to T+240h | 6-hourly | 00 UTC and 12 UTC |

## Parameters

Short Name | Long name | Description | Unit | ID | Additional information |
---|---|---|---|---|---|

2DFD | 2D wave spectra | Wave variance spectrum archived as a field for each discretized frequency and directional bin (what is actually encoded is log10 of the variance spectrum) | m2 s radian-1 | 140251 |
Coded in 36 frequencies and 36 directions Not for step 0 |

BFI | Benjamin-Feir index | Benjamin-Feir index | dimensionless | 140253 | |

CDWW | Coefficient of drag with waves | Atmospheric drag coefficient influenced by the presence of waves for all wave model sea points | dimensionless | 140233 | |

DWI | 10 metre wind direction | Neutral 10m wind direction for all wave model sea points | degrees | 140249 | |

DWPS | Wave spectral directional width for swell | Spectral width of the total swell spectrum | dimensionless | 140228 | |

DWWW | Wave spectral directional width for wind waves | Spectral width of the wind sea spectrum | dimensionless | 140225 | |

H1012 | Significant wave height of all waves with periods within the inclusive range from 10 to 12 seconds | Significant wave height of all waves with periods within the inclusive range from 10 to 12 seconds, where the significant wave height is defined as 4 times the square root of the integral over all directions and all frequencies between 1/12 and 1/10 Hz of the two-dimension wave spectrum | m | 140114 |
43r1 |

H1214 | Significant wave height of all waves with periods within the inclusive range from12 to 14 seconds | Significant wave height of all waves with periods within the inclusive range from 12 to 14 seconds, where the significant wave height is defined as 4 times the square root of the integral over all directions and all frequencies between 1/14 and 1/12 Hz of the two-dimension wave spectrum | m | 140115 |
43r1 |

H1417 | Significant wave height of all waves with periods within the inclusive range from 14 to 17 seconds | Significant wave height of all waves with periods within the inclusive range from 14 to 17 seconds, where the significant wave height is defined as 4 times the square root of the integral over all directions and all frequencies between 1/17 and 1/14 Hz of the two-dimension wave spectrum | m | 140116 |
43r1 |

H1721 | Significant wave height of all waves with periods within the inclusive range from 17 to 21 seconds | Significant wave height of all waves with periods within the inclusive range from 17 to 21 seconds, where the significant wave height is defined as 4 times the square root of the integral over all directions and all frequencies between 1/21 and 1/17 Hz of the two-dimension wave spectrum | m | 140117 |
43r1 |

H2125 | Significant wave height of all waves with periods within the inclusive range from 21 to 25 seconds | Significant wave height of all waves with periods within the inclusive range from 21 to 25 seconds, where the significant wave height is defined as 4 times the square root of the integral over all directions and all frequencies between 1/25 and 1/21 Hz of the two-dimension wave spectrum | m | 140118 |
43r1 |

H2530 | Significant wave height of all waves with periods within the inclusive range from 25 to 30 seconds | Significant wave height of all waves with periods within the inclusive range from 25 to 30 seconds, where the significant wave height is defined as 4 times the square root of the integral over all directions and all frequencies between 1/30 and 1/25 Hz of the two-dimension wave spectrum | m | 140119 |
43r1 |

HMAX | Maximum individual weight | Estimation value of the maximum individual wave height | m | 140218 | |

MDTS | Mean direction of total swell | Mean direction computed from the total swell spectrum | degrees | 140238 | |

MDWW | Mean direction of wind waves | Mean direction computed from the windsea spectrum | degrees | 140235 | |

MP1 | Mean wave period based on first moment | Mean wave period computed using the first frequency moment of the spectrum | s | 140220 | |

MP2 | Mean wave period based on second moment | Mean wave period computed using the second frequency moment of the spectrum | s | 140221 | |

MPTS | Mean period of total swell | Mean wave period computed using the reciprocal frequency moment of the total swell spectrum | s | 140239 | |

MPWW | Mean period of wind waves | Mean wave period computed using the reciprocal frequency moment of the windsea spectrum | s | 140236 | |

MSQS | Mean square slope of waves | Mean square slope computed from the full wave spectrum | dimensionless | 140244 | |

MWD | Mean wave direction | Mean wave direction computed using the full spectrum | degrees | 140230 | |

MWD1 | Mean wave direction of first swell partition | Mean wave direction computed using the first most energetic partition of the swell spectrum | degrees | 140122 | |

MWD2 | Mean wave direction of second swell partition | Mean wave direction computed using the second most energetic partition of the swell spectrum | degrees | 140125 | |

MWD3 | Mean wave direction of third swell partition | Mean wave direction computed using the third most energetic partition of the swell spectrum | degrees | 140128 | |

MWP | Mean wave period | Mean wave period computed using the reciprocal frequency moment of the full spectrum | s | 140232 | |

MWP1 | Mean wave period of first swell partition | Mean wave period computed using the reciprocal frequency moment of the first most energetic partition of the swell spectrum | s | 140123 | |

MWP2 | Mean wave period of second swell partition | Mean wave period computed using the reciprocal frequency moment of the second most energetic partition of the swell spectrum | s | 140126 | |

MWP3 | Mean wave period of third swell partition | Mean wave period computed using the reciprocal frequency moment of the third most energetic partition of the swell spectrum | s | 140129 | |

P1PS | Mean wave period based on first moment for swell | Mean wave period computed using first frequency moment of the total swell spectrum | s | 140226 | |

P1WW | Mean wave period based on first moment for wind waves | Mean wave period computed using first frequency moment of the windsea spectrum | s | 140223 | |

P2PS | Mean wave period based on second moment for swell | Spectral mean wave period computed using second frequency moment of the total swell spectrum | s | 140227 | |

P2WW | Mean wave period based on second moment for wind waves | Mean wave period computed using second frequency moment of the windsea spectrum | s | 140224 | |

PHIAW | Normalized energy flux into waves | dimensionless | 140211 | ||

PHIOC | Normalized energy flux into ocean | dimensionless | 140212 | ||

PP1D | Peak period of 1D-spectra | Period corresponding to the peak of the one-dimensional wave spectrum | s | 140231 | |

RHOAO | Air density over the oceans | air density over the oceans as derived from the lowest model temperature, specific humidity and pressure of the atmospheric model over all wave model sea points NOTE: because it is produced as a wave model output, it is only defined over the ocean |
kg m**-3 | 140209 | |

SHTS | Significant height of total swell | Period corresponding to the peak of the one-dimensional wave spectrum | m | 140237 | |

SHWW | Significant height of wind waves | Significant wave height for the windsea wave spectrum | m | 140234 | |

SH10 | Significant wave height of all waves with period larger than 10s | - | m | 140120 | |

SWH | Significant wave height of combined wind waves and swell | Significant wave height for the full wave spectrum | m | 140229 | |

SWH1 | Significant wave height of first swell partition | Significant wave height for the first most energetic partition of the swell spectrum | m | 140121 | |

SWH2 | Significant wave height of second swell partition | Significant wave height for the second most energetic partition of the swell spectrum | m | 140124 | |

SWH3 | Significant wave height of third swell partition | Significant wave height for the third most energetic partition of the swell spectrum | m | 140127 | |

TAUOC | Normalized stress into ocean | dimensionless | 140214 | ||

TMAX | Period corresponding to maximum individual wave height | Period corresponding to maximum individual wave height | s | 140217 | |

UST | U-Component stokes drift | U-component stokes drift | m s-1 | 140215 | |

VST | V-Component stokes drift | V-component stokes drift | m s-1 | 140216 | |

WDW | Wave spectral directional width | Directional width of the full wave spectrum | dimensionless | 140222 | |

WEFXD | Wave energy flux mean direction | Spectral mean direction over all frequencies and direction of the product of the group velocity vector and the two-dimensional energy wave spectrum. | Degree true | 140113 |
43r1 |

WEFXM | Wave energy flux magnitude | Integral over all frequencies and directions of the product of the group speed and the two-dimensional energy wave spectrum. | W/m | 140112 |
43r1 |

WIND | 10 metre wind speed | Neutral 10m wind speed for all wave model sea points | m s**-1 | 140245 | |

WMB (inv) | Model Bathymetry | Water depth used by the wave model | m | 140219 | Analysis only If requested, provided free of charge |

WSK | Wave spectral kurtosis | Kurtosis of the sea surface elevation due to waves | dimensionless | 140252 | |

WSP | Wave spectral peakedness | Peakedness factor of the full wave spectrum | dimensionless | 140254 | |

WSS | Wave Spectral Skewness | Skewness of the sea surface elevation due to waves | dimensionless | 140207 | |

WSTAR | Free convective velocity over the oceans | This parameter is used to prescribe the level of wind gustiness which influence wave growth. It is calculated using parameters from the atmospheric model: w* = u* {1/kappa (Zi/(-L))} ^1/3 where u* is the friction velocity kappa is the von Karman constant Zi is the height of the lowest inversion L is the Monin-Obukhov length NOTE: because it is produced as a wave model output, it is only defined over the ocean |
m s**-1 | 140208 |

*Page last updated: Dec 2016*