Grib file containing constant field related to the 30-km QBOLAM model (operational at the Italian Environment Agency, Rome, Italy). The file contains the following fields:
- longitude, degrees E
- latitude, degrees N
- Geometrical height of earth surface amsl (m)
- Geopotential of earth surface (m**2/s**2)
- Land-sea mask.
It does not include the height of the pressure levels since this is not a fixed field (QBOLAM is a sigma-vertical coordinate, hydrostatic model, so that geopotential is a predicted 3D field).