Regional Assessment of Sub-Hourly Annual Rainfall Maxima

The assessment of rainfall extremes at sub-hourly scales is generally hindered by a lack data small timescale resolutions. This study proposes methodology for assessing mean annual maximum the scale blending historical time series maxima recorded mechanical stations (operating hourly scales) up to end past century with newer higher resolutions automatic installed over twenty years. A linear correlation was found regional between shape parameter controlling dependency duration longer than one hour and durations shorter hour. Thanks this correlation, could be exploited assess maxima. proposed hybrid procedure verified provide estimates an accuracy close those obtained high-resolution data, i.e., our best estimates. Moreover, outperforms what achieved spatially interpolating locations where only are available.