Marie-Amélie Boucher

In memoriam Ad de Roo

September 30, 2022 Marie-Amélie Boucher Comments 1 comment

Contributed by Jutta Thielen, Maria-Helena Ramos and the HEPEX co-chairs It is with great sadness that we share the news that Ad de Roo passed away on 26 September 2022 after having lost his month-long battle against serious illness. Ad studied physical geography, environmental science and tropical soil science and obtained a PhD from the University of Utrecht in 1993. He has developed much of his professional career at the European Commission Joint Research Centre where he started in 1997…

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If you had to build a probabilistic streamflow forecasting chain from scratch, what components would you pick up?

March 23, 2022 Marie-Amélie Boucher Comments 0 Comment

Contributed by Joseph Bellier Take a meteorological ensemble, use it as input of a hydrological model, but then what? There are many ways to improve a forecasting chain, but which upgrade is going to be the most beneficial? We recently published a paper in which we “play” with a modular forecasting chain, by adding/removing various components and verifying how skillful the streamflow forecasts are. Here are some outputs. The ensemble approach, in its wider definition (not only meteorological ensemble forecasting),…

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Representative Direct Ensemble Uncertainty Visualizations: Conveying Uncertainty Using A Small Portion of The Data

November 18, 2020 Marie-Amélie Boucher Comments 0 Comment

Contributed by Le Liu, PhD., School of Computer Science Northwestern Polytechnical University. As we know, ensemble approaches are widely adopted to estimate forecasts uncertainty. In atmospheric sciences, these approaches are specifically categorized into two types: multi-model ensembles and perturbed parameter ensembles. The former runs multiple numerical prediction models with the same initial parameters to estimate the atmospheric evolution, while the latter runs a single model multiple times with slightly perturbed initial conditions. They are usually combined to form the final forecast….

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Where did the scientific method go?

July 28, 2020 Marie-Amélie Boucher Comments 0 Comment

… And can we please bring it back? Contributed by Marie-Amélie Boucher (Université de Sherbrooke, Canada) I like the scientific method. I like it because it makes us focus on the acquisition of new knowledge following a rigorous path and does not devalue results that go against initial expectations. However, it seems to me that in hydrology, like in many applied sciences we focus mostly on reaching research objectives, or goals. Objective-centered research: what is the problem with research objectives?…

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IAHS conference: live feed

July 8, 2019 Marie-Amélie Boucher Comments 0 Comment

Contributed by Marie-Amélie Boucher (Université de Sherbrooke) and Maria-Helena Ramos (Irstea) Cannot attend IAHS conference in Montreal this week? Follow us then! During this week, from Monday 8 to Saturday 13, we will be posting some lines and photos every day in the HEPEX blog, directly from the 27th IUGG General Assembly, at the Palais des Congrès in Montréal, Canada. You can post comments day by day too, and we will try to answer them all. Just remember: we will…

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