The legacy of STAHY
Milestones, achievements, challenges, and open problems in statistical hydrology
Elena Volpi (University of Roma Tre)
Salvatore Grimaldi (Universita degli Studi della Tuscia Viterbo)
Amir Aghakouchak (University of California)
Attilio Castellarin (University of Bologna)
Fateh Chebana ( Institut national de la recherche scientifique)
Simon Michael Papalexiou (University of Calgary)
Hafzullah Aksoy (Istanbul Technical University)
András Bárdossy (University of Stuttgart)
Elisa Ragno (TU Delft - Civil Engineering & Geosciences)
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Abstract
Statistical tools are crucial for a variety of hydrological applications, whether to model processes and enhance understanding and knowledge or to design infrastructure systems. Given the rapid evolution of statistical methods and the need for a solid theoretical foundation for their correct application, a multidisciplinary community STAtistics in HYdrology Working Group (STAHY-WG) aggregated under the International Association of Hydrological Sciences (IAHS) umbrella to contribute to this research field. Now, more than 15 years since its inception, this paper summarizes the main achievements of this productive community collaboration in four (of many) branches of statistical hydrology: extreme value analysis, multivariate analysis, time series analysis, and regionalization. The aim is to provide an overview of recent developments, offer practical suggestions (e.g. software packages), and outline future challenges to support scientists and practitioners in their endeavours within the realm of statistical hydrology studies.