The fixed fields are computet at the first time step of each model run (analysis as well as forecast) and stay constant for the time of model run. This data set contains the following fields: Longitude Latitude Geometrical height of surface amsl (m) Geometrical height of surface amsl of model levels (m) Geopotential of earth surface (m^2/s^2) Land-Sea-Mask Plant coverage (%) Root depth (m) Leaf Area Index Soil type