Land-sea mask
| Name: | land_sea_mask | Abbreviation: | lsm | Unit: | Proportion |
| Definition | The land-sea mask is a field that contains, for every grid point, the proportion of land in the grid box. The values are between 0 (sea) and 1 (land). |
| Validity | Fixed |
| Comment | Archived for control forecast and re-forecast, only once a day at 00Z Please note the typo in the GRIB2 manual: 0=land and 1=sea. The ET-DRC agreed that this is a typo and the correct usage is: 1 indicates land and 0 indicates sea. |
| Parameter | ||
|---|---|---|
| Discipline | = 2 | Land surface products |
| Parameter Category | = 0 | Vegetation/biomass |
| Parameter Number | = 0 | Land cover (proportion) |
| 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 |