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climpred.stats.decorrelation_time

climpred.stats.decorrelation_time#

climpred.stats.decorrelation_time(da: Dataset | DataArray, iterations: int = 20, dim: str = 'time') → Dataset | DataArray[source]#

Calculate the decorrelaton time of a time series.

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

Parameters:

  • da – input.

  • iterations – Number of iterations to run the above formula.

  • dim – 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

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