climpred.stats.decorrelation_time¶

climpred.stats.decorrelation_time(da, r=20, dim='time')[source]¶

Calculate the decorrelaton time of a time series.

$\tau_{d} = 1 + 2 * \sum_{k=1}^{r}(\alpha_{k})^{k}$

Parameters:	da (xarray object) – Time series. r (optional int) – Number of iterations to run the above formula. dim (optional str) – Time dimension for xarray object.
Returns:	Decorrelation time of time series.

Reference:

Storch, H. v, and Francis W. Zwiers. Statistical Analysis in Climate Research. Cambridge ; New York: Cambridge University Press, 1999., p.373