d
<code>intensity_cumulative_abs</code> are as above except as absolute magnitudes
rather than relative to the seasonal climatology or threshold.</p>
<p>Note that <code>rate_onset</code> and <code>rate_decline</code> will return <code>NA</code>
when the event begins/ends on the first/last day of the time series. This
may be particularly evident when the function is applied to large gridded
data sets. Although the other metrics do not contain any errors and
provide sensible values, please take this into acco