GRIB-API ecCodes definition
| Name: | Peak wave period of 1D spectra | Abbreviation: | pp1d | Unit: | s | paramId: | 140231 |
UERRA Other details
| Definition | Reciprocal of the frequency corresponding to the largest value (peak) of the frequency wave spectumspectrum. 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 | 34 | Peak 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 | |