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2. HYMEX-SOPI : The Field Campaign Dedicated to Heavy Precipitation and Flash Flooding in the Northwestern Mediterranean

Author

Ducrocq, Véronique, Braud, Isabelle, Davolio, Silvio, Ferretti, Rossella, Flamant, Cyrille, Jansa, Agustin, Kalthoff, Norbert, Richard, Evelyne, Taupier-Letage, Isabelle, Ayral, Pierre-Alain, Belamari, Sophie, Berne, Alexis, Borga, Marco, Boudevillain, Brice, Bock, Olivier, Boichard, Jean-Luc, Bouin, Marie-Noëlle, Bousquet, Olivier, Bouvier, Christophe, Chiggiato, Jacopo, Cimini, Domenico, Corsmeier, Ulrich, Coppola, Laurent, Cocquerez, Philippe, Defer, Eric, Delanoë, Julien, Di Girolamo, Paolo, Doerenbecher, Alexis, Drobinski, Philippe, Dufournet, Yann, Fourrié, Nadia, Gourley, Jonathan J., Labatut, Laurent, Lambert, Dominique, Le Coz, Jérôme, Marzano, Frank S., Molinié, Gilles, Montani, Andrea, Nord, Guillaume, Nuret, Mathieu, Ramage, Karim, Rison, William, Roussot, Odile, Said, Frédérique, Schwarzenboeck, Alfons, Testor, Pierre, Van Baelen, Joël, Vincendon, Béatrice, Aran, Montserrat, and Tamayo, Jorge

Published
2014

3. SUPPLEMENT : HYMEX-SOPI The Field Campaign Dedicated to Heavy Precipitation and Flash Flooding in the Northwestern Mediterranean

Author

Ducrocq, Véronique, Braud, Isabelle, Davolio, Silvio, Ferretti, Rossella, Flamant, Cyrille, Jansa, Agustin, Kalthoff, Norbert, Richard, Evelyne, Taupier-Letage, Isabelle, Ayral, Pierre-Alain, Belamari, Sophie, Berne, Alexis, Borga, Marco, Boudevillain, Brice, Bock, Olivier, Boichard, Jean-Luc, Bouin, Marie-Noëlle, Bousquet, Olivier, Bouvier, Christophe, Chiggiato, Jacopo, Cimini, Domenico, Corsmeier, Ulrich, Coppola, Laurent, Cocquerez, Philippe, Defer, Eric, Delanoë, Julien, Di Girolamo, Paolo, Doerenbecher, Alexis, Drobinski, Philippe, Dufournet, Yann, Fourrié, Nadia, Gourley, Jonathan J., Labatut, Laurent, Lambert, Dominique, Le Coz, Jérôme, Marzano, Frank S., Molinié, Gilles, Montani, Andrea, Nord, Guillaume, Nuret, Mathieu, Ramage, Karim, Rison, William, Roussot, Odile, Said, Frédérique, Schwarzenboeck, Alfons, Testor, Pierre, Van Baelen, Joël, Vincendon, Béatrice, Aran, Montserrat, and Tamayo, Jorge

Published
2014

8. A high space–time resolution dataset linking meteorological forcing and hydro-sedimentary response in a mesoscale Mediterranean catchment (Auzon) of the Ardèche region, France

Author

Nord, Guillaume, primary, Boudevillain, Brice, additional, Berne, Alexis, additional, Branger, Flora, additional, Braud, Isabelle, additional, Dramais, Guillaume, additional, Gérard, Simon, additional, Le Coz, Jérôme, additional, Legoût, Cédric, additional, Molinié, Gilles, additional, Van Baelen, Joel, additional, Vandervaere, Jean-Pierre, additional, Andrieu, Julien, additional, Aubert, Coralie, additional, Calianno, Martin, additional, Delrieu, Guy, additional, Grazioli, Jacopo, additional, Hachani, Sahar, additional, Horner, Ivan, additional, Huza, Jessica, additional, Le Boursicaud, Raphaël, additional, Raupach, Timothy H., additional, Teuling, Adriaan J., additional, Uber, Magdalena, additional, Vincendon, Béatrice, additional, and Wijbrans, Annette, additional

Published
2017
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9. Flash-flood forecasting in two Spanish Mediterranean catchments: a comparison of distinct hydrometeorological ensemble prediction strategies.

Author

Vincendon, Béatrice and Amengual, Arnau

Subjects
FLOOD forecasting, HYDROMETEOROLOGY, RISK assessment
Abstract

Hydrological Ensemble Prediction Systems (HEPSs) are becoming more and more popular methods to deal with the meteorological and hydrological uncertainties that affect discharge forecasts. These uncertainties are particularly difficult to handle when dealing with Mediterranean flash-flood forecasting as many hydrological and meteorological factors take place and precipitation comes from small scale convective systems. In this work, the performances of distinct HEPS are compared for two heavy precipitation events that affected two different semi-arid Spanish Mediterranean catchments: the cases of the 03 November 2011 on the Llobregat River in Catalonia, and the 28 September 2012 on the Guadalentín River near in Murcia. The latter case corresponds to the eighth Intense Observing Period (IOP8) of HYMEX field campaign. The uncertainty on quantitative precipitation forecasting is sampled by using two different convection-permitting meteorological ensemble generation strategies. The first EPS strategy consists in dynamically downscaling the ECMWF-EPS directly by means of the WRF model, whereas the second is based on the AROME-WMED model. Its deterministic QPFs are perturbed based on a previous rainfall forecast error climatology and by using the probability density functions of the errors, in term of total amounts and location of the heaviest rainfalls. The population of both ensembles is of 50 members, which are used to drive the semi-distributed and conceptual HEC-HMS and the fully distributed and physically-based ISBA-TOP hydrological models. For each HEPS, the performance is assessed in term of the quantitative discharge forecasts. The results point out the benefits of using (i) a hydrological model when evaluating highly-variable and convective-driven precipitation fields and (ii) an EPS to better encompass these uncertainties arising from the different elements of the HEPS. Issues about the optimal number of ensemble members and impact of the ensemble forecasting lead time are addressed for optimal flash-flood forecasting purposes as well. [ABSTRACT FROM AUTHOR]

Published
2017
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10. Apport des modèles météorologiques de résolution kilométrique pour la prévision des crues rapides méditerranéennes : vers une prévision d'ensemble des débits en région Cévennes-Vivarais

Author

Audard-Vincendon, Béatrice and Audard-Vincendon, Béatrice

Abstract

Les régions méditerranéennes sont soumises au risque de crue-éclair à l'automne. Le premier volet de cette thèse a permis d'évaluer l'apport du système couplé ISBA-TOPMODEL pour la simulation de ce type de crues sur trois bassins versants cévenols. Le potentiel des prévisions déterministes à fine échelle (telles que celles fournies par le modèle AROME) pour la prévision des débits est examiné dans le deuxième volet de la thèse. On montre que les erreurs de localisation de la prévision de pluie se propagent dans le modèle hydrologique en s'amplifiant. Finalement, pour quantifier ces incertitudes, une méthode de perturbation des pluies prévues par AROME est développée et utilisée pour générer des ensembles de débits prévus. La prévision d'ensemble des débits s'est montrée meilleure qu'une prévision de débits partant de la prévision déterministe de pluie., The northwestern Mediterranean is prone to heavy rainfall events that lead to flash-floods over the small to medium basins of the region. The first part of the thesis is to assess the benefit of using the ISBA-TOPMODEL coupled system to simulate this type of flooding on three watersheds of the Cévennes-Vivarais region. mediterranean flash-floods. The potential of convective-scale deterministic forecasts (such as those provided by the French AROME model) for flow forecasting is discussed in the second part of the Ph.D work. It is shown that location errors in the rainfall forecast propagate into the hydrologic model to grow. In the last part, to quantify these uncertainties, a perturbation method of the AROME precipitation forecast is is developed. The rainfall scenarios are then igested into ISBA-TOPMODEL to generate an ensemble of dicharge forecasts. The resulting discharge ensembles are found better than the discharge simulation driven by the single deterministic operational AROME forecast.

Published
2010

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