ecCodes definition
| Name: | Mean zero-crossing wave period | Abbreviation: | mp2 | Unit: | s | paramId: | 140221 |
Other details
| Definition | Spectral mean wave period obtained using the second integral moment of the frequency wave spectrum. The integration is performed over all frequencies up to infinity. The frequency wave spectrum is obtained by integrating the two-dimensional wave spectrum over all directions |
| Validity | instantaneous |
| Comment | Missing values should be encoded as bitmap. |
WMO GRIB2 definition
| Parameter | ||
|---|---|---|
| Discipline | 10 | oceanographic products |
| Parameter category | 0 | waves |
| Parameter number | 28 | Mean zero-crossing wave period |
| Level | ||
|---|---|---|
| Type of first fixed surface | 1 | ground or water surface |
| Scale factor of first fixed surface | all bits to 1 | missing |
| Scaled value of first fixed surface | all bits to 1 | missing |
| Type of second fixed surface | all bits to 1 | missing |
| Scale factor of second fixed surface | all bits to 1 | missing |
| Scaled value of second fixed surface | all bits to 1 | missing |