Articles | Volume 27, issue 20
https://doi.org/10.5194/hess-27-3719-2023
https://doi.org/10.5194/hess-27-3719-2023
Research article
 | 
20 Oct 2023
Research article |  | 20 Oct 2023

A principal-component-based strategy for regionalisation of precipitation intensity–duration–frequency (IDF) statistics

Kajsa Maria Parding, Rasmus Emil Benestad, Anita Verpe Dyrrdal, and Julia Lutz

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Short summary
Intensity–duration–frequency (IDF) curves describe the likelihood of extreme rainfall and are used in hydrology and engineering, for example, for flood forecasting and water management. We develop a model to estimate IDF curves from daily meteorological observations, which are more widely available than the observations on finer timescales (minutes to hours) that are needed for IDF calculations. The method is applied to all data at once, making it efficient and robust to individual errors.