Vertical coordinate system
From Glossary of Meteorology
vertical coordinate system
The system used to define the finite-difference approximation applied in the direction roughly perpendicular to the earth's surface in a numerical model.
The most obvious example is the use of geometric height; however, there are numerical or physical advantages to many other vertical coordinate systems. For example, a "terrain following" vertical coordinate system is one with a lowest coordinate surface that follows the terrain.
See sigma vertical coordinate, eta vertical coordinate, hybrid vertical coordinate, isentropic vertical coordinate, pressure vertical coordinates.
See sigma vertical coordinate, eta vertical coordinate, hybrid vertical coordinate, isentropic vertical coordinate, pressure vertical coordinates.