climpred.stats.decorrelation_time¶

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