case-studies – HEPEX

ZOOMing into the Age of Digital Collaborations

January 19, 2023 Ilias Pechlivanidis Comments 0 Comment

Contributed by Bart van Osnabrugge, Antara Dasgupta, Louise Arnal, Rebecca Emerton and Shaun Harrigan Are physical meetings strictly necessary to foster effective collaborations? The Context Hearing the laments about online conferences, limited interactions and zoom fatigue, it seems easy to go with the answer “yes they are”. Yes, meeting in person is fun and makes connecting a lot easier. There is no rivalling going out for dinner or partying after a full day of presentations. However, the virtual world also offers…

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How can we verify the predictive performance of ensemble hydroclimatic forecasts?

February 17, 2022 Ilias Pechlivanidis Comments 0 Comment

Contributed by Zeqing Huang and Tongtiegang Zhao This blog aims to contribute to the large scientific discussion on the performance assessment of ensemble hydroclimatic forecasts. We are particularly driven by the valuable global precipitation and temperature forecasts generated by global climate models (GCMs) (Pappenberger and Buizza, 2009; Kirtman et al., 2014; Bauer et al., 2015; Becker et al., 2020; Crochemore et al., 2021). Their forecasts have been widely used in hydrological modeling and water resources management, including flood warning (Alfieri…

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What is the value of seasonal forecasts for water resources management?

February 19, 2021 Ilias Pechlivanidis Comments 0 Comment

Contributed by Andres Peñuela, Christopher Hutton and Francesca Pianosi Improved skill of predictions for the North Atlantic circulation and Northern Europe have motivated an increasing effort to improve seasonal weather forecasting systems. Seasonal weather forecasts are expected to be useful for a range of purposes, including to improve the management of water resource systems. To contribute to the assessment of seasonal forecasts value for water managers, we ran a simulation exercise investigating how they could integrate seasonal forecast products in…

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Can we achieve seasonally coherent forecasts given limited NWP DATA – across a continental domain?

June 24, 2020 Rebecca Emerton Comments 0 Comment

Contributed by Kirsti Hakala1, QJ Wang1, Qichun Yang1 and David Robertson2. Reliable weather forecasts are critical for the planning and management of a variety of social and economic activities, such as water management. To make such forecasts, numerical weather prediction (NWP) models have been developed. However, NWP models are limited in their ability to represent certain physical processes and initial conditions, and thus include inaccuracies, which can be improved through calibration. Effective calibration should aim to provide forecasts that are…

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Assimilation of in-situ and satellite data in hydrological predictions – Can we add value?

June 3, 2020 Rebecca Emerton Comments 0 Comment

Contributed by Jude Musuuza (SMHI). The increased focus on satellite missions in recent years has resulted in a rich source of valuable Earth Observations (EO), in terms of spatial coverage and temporal frequencies that are impossible to achieve with direct measurements. Such observations have been used in various disciplines, including also hydrological modelling, for instance to improve process understanding through tailored model parameterisation and performance assessment. In addition EOs have been used to (better) initialise the model states which further…

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