spatial gradient
in mathematics, a gradient whose components are spatial derivatives with respect to the position coordinates
concentration gradient
spatial gradient with the concentration of a compound in a mixture as variable
density gradient
spatial variation in density over an area
potential gradient
local rate of change in potential with respect to displacement
lapse rate
Vertical rate of change of temperature in atmosphere
pressure gradient
a transition in the amount of pressure between two spatial locations
Sound speed gradient
Rate of change of speed of sound with distance
temperature gradient
temperature difference per length