Description Usage Arguments Details Value See Also Examples

Several pooling procedures can be applied to reduce the number of dependent droughts.

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`x` |
an object of class |

`tmin` |
numeric vector of length one interpreted as the number of days between two droughts to be considered independent events. Two droughts are pooled if their inter-event time is less than |

`ratio` |
numeric vector of length. Specifies the minimum ratio of inter-event volume and precedent drought volume. Two droughts are pooled if the critical |

`n` |
numeric vector of length one determining the width of the smoothing window |

The inter-event criterion (`pool_ic`

) pools subsequent drought events if the inter-event time is less than `tmin`

and the ratio of the drought volume and the inter-event volume is less than a given `ratio`

. The function `pool_it`

is simply a wrapper around `pool_ic(..., ratio = Inf)`

.

Pooling by a moving average (`pool_ma`

) simply smooths the time series before finding drought events.

Using the Sequent Peak algorithm (`pool_sp`

), a drought lasts until its cumulative deficit volume is zero again.

an object of class `deficit`

(inherited from `xts`

), with an
additional column `event.orig`

.

`find_droughts`

, `summary.deficit`

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