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- W4385207907 abstract "Intensity-Duration-Area-Frequency (IDAF) models provide the mathematical link between precipitation intensities (I), durations (D), areas (A), and frequency of occurrence (F). They play a critical role in hydrological design, areal rainfall hazard quantification, storm characterization, and early warning system development. IDAF models extend the conventional Intensity-Duration-Frequency (IDF) models by accounting for the spatial extent of precipitation({it i.e.}, the area). In this study, we develop IDAF models using the entire non-zero precipitation intensities, not only the extremes. We use the extended generalized Pareto distribution (EGPD) to model the precipitation intensities. To build the IDAF models, we adopt a data-driven approach that allows the linkage of EGPD parameters with duration and area, based on empirically determined parametric relationships. The inference of model parameters is done using a global maximum likelihood estimation, and uncertainties are assessed by the bootstrap method. The study area is Switzerland, a topographically complex region of 42,000 km$^2$ with regional precipitation variability and clear seasonality. The study utilizes 17-years of data from texttt{CombiPrecip}, a radar-reanalysis product developed by geostatistically merging radar and rain gauge data in an operational setting. We build the IDAF models for the spatiotemporal range of 1 to 72 hours and 1 to 1,089 km$^2$ at each pixel in the study area. To the best of our knowledge, our study is the first attempt to use the EGPD in IDAF curve modeling. It discusses the use and limitations of texttt{CombiPrecip} in extreme value analysis and highlights the challenges of modeling areal precipitation in a complex topographical environment." @default.
- W4385207907 created "2023-07-25" @default.
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- W4385207907 date "2023-08-04" @default.
- W4385207907 modified "2023-09-27" @default.
- W4385207907 title "Modeling Areal Precipitation Hazard: A Data-driven Approach to Model Intensity-Duration-Area-Frequency Relationships using the Full Range of Non-Zero Precipitation in Switzerland" @default.
- W4385207907 doi "https://doi.org/10.22541/essoar.169111775.53035997/v1" @default.
- W4385207907 hasPublicationYear "2023" @default.
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