THE VERTICAL GRID

Three-dimensional output is provided about 25 constant pressure surfaces spanning from 1000 mb to 25 mb, at intervals of 50 mb, with 25 mb intervals added in lowest 2.0 km and at the tropopause jet level. (Also, atmospheric fields near the surface, i.e. within or near the boundary layer, are provided on alternative levels described later in the detailed description of the output fields.)