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Category: activities

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

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

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?

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

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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Can seasonal hydroclimate services be a success story for local applications? Some answers based on a French case study!

Can seasonal hydroclimate services be a success story for local applications? Some answers based on a French case study!

Contributed by Louise Crochemore (SMHI), Ilias Pechlivanidis (SMHI) and Maria-Helena Ramos (INRAE). Hydroclimate services are increasingly available… An increasing number of hydroclimate services provide readily available water predictions to users at the catchment scale. For example, in Europe: Local to global services based on products from the Copernicus Climate Change Service (C3S) have been developed for the hydropower, water resources, flood risk prevention and agriculture sectors within the H2020 CLARA project. The H2020 S2S4E project has co-developed a decision support…

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Hydrological Forecasting at EGU 2020: (5+1) things not to miss

Hydrological Forecasting at EGU 2020: (5+1) things not to miss

The EGU 2020 Annual General Assembly will take place from 4–8 May 2020; however this time we will not be able to physically meet in Vienna and the event will instead take place remotely. Nevertheless there are ways to get updated on the recent scientific insights and developments and also to virtually socialize with friends and colleagues. To make EGU 2020 and the hydrological forecasting subdivision a big success this year too, here are 5+1 HEPEX activities we initiated that…

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A Month of Storms: Ciara, Dennis and Atmospheric Rivers

A Month of Storms: Ciara, Dennis and Atmospheric Rivers

Contributed by Helen Griffith, Dept of Geography & Environmental Science, University of Reading, UK. February 2020 has been announced as the wettest February on record for most of the UK[1]. The arrival of Storms Ciara and Dennis led to widespread flooding and the recovery is expected to cost the insurance industry over £225m[2]. Saturated soils combined with additional rainfall mean that, at the time of writing, over 100 flood warnings are still in place across England and Wales and the…

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