Table 1 Overview of time series indices in GSDR-I.
From: An Observation-Based Dataset of Global Sub-Daily Precipitation Indices (GSDR-I)
Group | Name | Equation | Description | Units |
|---|---|---|---|---|
Intensity | RxHhr | 9 | Simple monthly, seasonal or annual maxima of H-hour (1-, 3-, 6-, 12- or 24-hour) precipitation series (using a sliding window to identify maxima when H > 1) | mm |
General | Rx1hrP | 10 | Percentage contribution of Rx1hr (1-hour maximum) to the total precipitation of the corresponding calendar day (00:00-00:00 local time) | % |
General | RQpwHhrP | 8 | Percentage contribution to monthly, seasonal or annual totals from H-hour intervals exceeding the Qth (95th or 99th) wet-hour (w) percentiles (see RQpwHhr in Table 2) | % |
Frequency | RHhrTmm | 6 | Count of hours (or multi-hour intervals if H is greater than 1) greater than 10, 20, 30 or 50 mm thresholds (T) | count |
Duration | NWH | 1 | Total number of wet hours | hours |
Duration | MeLWS | 5 | Mean length of wet spell | hours |
Duration | MxLWS | 4 | Maximum length of wet spell | hours |
Intensity | SPIIHhr | 7 | Simple precipitation intensity index, defined as mean precipitation in wet hours (or multi-hour intervals if H is greater than 1) | mm |
General | RTot | 3 | Total precipitation | mm |
