Gradients - Temporal vs Spatial

I have a transient CDF model showing the temperature evolution for a component.

I would like to plot the temporal and spatial temperature gradients for each time step. Then from these plots create images of the maximum and minimum spatial and temporal gradients for each cell (using temporal statistics filter).

a) Am I correct in believing that the “gradients of unstructured dataset” filter is calculating the spatial temperature gradient?

B) is there a way to calculate the temporal gradient in temperature for each cell (i.e cooling/heating rate)?