A hybrid of pressure and terrain-following vertical co-ordinates is used in which the upper levels tend towards the pressure coordinate and near-surface layers tend towards the terrain-following coordinate

• 垂直坐标是混合了气压坐标和依随地形变化的坐标,上层倾向气压坐标,接近地面的层次则倾向依随地形变化的坐标