Table 1 Extreme precipitation indices used in this study.
Extreme precipitation index | Description | Definition | Units |
|---|---|---|---|
R95p | Precipitation due to very wet days | Seasonal total precipitation at each grid points when daily precipitation exceeds the extreme 95th percentile threshold \(R95p = \mathop \sum \limits_{i - 1980}^{2014} R95p_{i}\) \(R95p_{i} = \sum R_{wi} \;when\; R_{wi} > 1\;mm\; and\; R_{wi} > R95\) R95 is the 95th percentile threshold, and Rw is daily rainfall | mm |
R95d | Number of very wet days | Seasonal total number of days at each grid point when daily precipitation exceeds the extreme 95th percentile threshold \(R95d = \mathop \sum \limits_{i - 1980}^{2014} R95d_{i}\) \(R95d_{i} = \sum R_{di} \;when\; R_{wi} > 1\;mm \;and \;R_{wi} > R95\) Rd is rainy day when Rwi > 1 mm | days |
AEPI | Extreme precipitation intensity | The absolute intensity of extreme precipitation defined as the ratio of extreme precipitation to extreme precipitation days, i.e., R95p/R95d | mm/day |
R95pT | Ratio of extreme precipitation | Ratio of seasonal extreme precipitation to seasonal rainfall from rainy days \(R95pT = \frac{R95p}{{R_{t} }}\) \(R_{t} = \sum R_{wi} , R_{wi} > 1\;mm\) | No units |
