A spatial gradient is a gradient whose components are spatial derivatives, i.e., rate of change of a given scalar physical quantity with respect to the position coordinates. Homogeneous regions have spatial gradient vector norm equal to zero. When evaluated over altitude or depth, it is called vertical gradient.
- Concentration gradient, the ratio of solute concentration between two adjoining regions
- Potential gradient, the difference in electric charge between two adjoining regions
- Fluid dynamics and earth science