(Integrated) autocorrelation time

@Sleort I want to clarity it further, and repeat that variogram and autocorrelation are basically the same thing (one is minus the other). You can compute variogram with time series exactly as you do with autocorrelation.

The main difference from a modeling perspective is that we have variograms for which there is no covariance, correlation, correlogram… counterpart. Other than that, they can be seen as equivalent.