metpy.calc.get_perturbation(ts, axis=-1)[source]

Compute the perturbation from the mean of a time series.

Parameters:ts (array_like) – The time series from which you wish to find the perturbation time series (perturbation from the mean).
Returns:array_like – The perturbation time series.
Other Parameters:
 axis (int) – The index of the time axis. Default is -1


The perturbation time series produced by this function is defined as the perturbations about the mean:

\[x(t)^{\prime} = x(t) - \overline{x(t)}\]