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Benjamin Grelier

9
Documents
Affiliations actuelles
  • 527641

Présentation

University degrees: ------------------- Doctoral degree in Geography of University of Lorraine (France) and in Sciences and Technologie of University of Liège (Belgium). Master degree in Geography of University of Lorraine (France), in the field of Water resources - Management and Planning. Engineering degree in International Agro-Development of ISTOM (France). Research: --------- My doctoral works set up at the interface of areas of climatology, hydrology and hydraulic. The objective of my PhD thesis was to carry up a climate change impact study on hydrological hazards (low and high flows) in the transnational Meuse basin (France, Belgium). It was co-directed by [Gilles DROGUE](http://loterr.univ-lorraine.fr/content/drogue-gilles) of the LOTERR laboratory (Univ. Lorraine) and [Michel PIROTTON](http://www.hach.ulg.ac.be/cms/en/node/936) of the HECE laboratory (Univ. Liège). Following my objectives, research axes are as following: \- statistical study of links between meso-scale atmospheric circulation and surface hydrological/climatological variables; \- statistical regionalization of IPCC/CMIP-5 outputs and reconstitution of historical series; \- rainfall-runoff empirical global modelling and frequency analysis; \- use of hydraulic modelling for river-overflow analysis (Discharge-duration-Frequency analysis). Current research projects involvements/interests: \- Meuse model intercomparison study: transnational (NL, B, D, L, F) volontary effort on comparing hydrological models and symposiums on the Meuse basin. \- RECRET: Reconstitution of historical high and low flows in the french Moselle basin (leader: LOTERR, Univ. Lorraine), Other professional experiences: ------------------------------- I recently conducted a monitoring & evaluation study as part of an agriculture development program in Malawi (2 catchment areas), aiming at assessing the rate of adoption by beneficiary farmers, of agricultural practices promoted by the project. As a result, recommendations are proposed according to the agricultural and projects contexts (4 months - 2019). My Master 2 works consisted in carrying on a hydromorphological diagnosis on two small rivers in the north of Alsace (France) and propose a plan of renaturation measures (6 months - 2014). For my final engineering study works, I carried on a diagnosis on soil degradation in a small catchment mainly used for vetiver and subsitence crops in Haïti, based on a coupled physical and agro-socio-economic approach, and proposed a set of agro-environmental measures for ravine and fields planning (5.5 months - 2012). Teaching: --------- I was in charge of a 64 h/year teaching commitment (2015/2016, 2016/2017) during my PhD contract. Teaching fields: \- basis notions and concepts in physical geography: géology and biogeography (Bachelor 1), \- tutorials in urban heat island (Bachelor 1), \- tutorials in flood risk study and management (Bachelor 1), \- tutorials in basic computer and desktop tools (Bachelor 1), \- tutorials in hydrologic analysis programming, Scilab (Master 2). Responsabilities: courses and teaching preparation, short field trip accompagnying and management, student assessment preparation and marking, participation to semestrial department jury. Skills and tools ---------------- \- statistical methods and analysis: multivariate regressions, classification, frequency analyisis, \- modelling: regionalisation, hydrological modelling (GR4J), use of hydraulic modelling (WOLD 1D), \- computing programmation: formatting, processing and data analysis and graphic representation (Matlab, Scilab, R), \- GIS: database, spatial processing, cartography (Qgis), \- Field survey & interviews: structured and semi-structured interviews, questionnaire elaboration, construction of a linked entering collected data-database program (LibreOffice Base), \- desktop: LibreOffice, MSOffice, LaTeX, \- computer environment: Windows, Linux (Ubuntu), \- oral presentation, scientific/popularization and report writing, \- study team management & supervision. Languages \- french: mother tong, \- english: operationnal (understanding, speaking, writing), \- spanish: basis (understanding, speaking, writing).

Publications

claire-delus
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L'étiage 2022 dans les bassins français de la Meuse et du Rhin

Didier Francois , Hajar El Khalfi , Benjamin Grelier , Claire Delus , Gilles Drogue
Sécheresse et étiages 2022, Société Hydrotechnique de France, Mar 2023, Chatou/Paris, France. pp.175-180
Communication dans un congrès hal-04030463v1
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Amélioration de la modélisation hydrologique en climat réchauffé. Application au bassin versant de la Moselle

Hajar El Khalfi , Claire Delus , Gilles Drogue , Sébastien Lebaut , Luc Manceau
36ème Colloque de l’Association Internationale de Climatologie - Climat, eau et société : changements et défis, Association Internationale de Climatologie (AIC), Jul 2023, Bucarest, Roumanie
Communication dans un congrès hal-04102697v1
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Chaine intégrée pour la prévision hydrométéorologique des étiages et des sécheresses (CIPRHES) en France

François Tilmant , Vazken Andréassian , Pierre Bernard , François Bourgin , Olivier Delaigue
Sécheresse et étiages 2022, SHF, Mar 2023, Paris, France
Communication dans un congrès hal-04257352v1
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Utilisation d'une base de données de jaugeages à une échelle régionale pour réaliser un référentiel d'étiage

Benjamin Grelier , Hajar El Khalfi , Claire Delus , Gilles Drogue , Sébastien Lebaut
Sécheresse et étiages 2022, Société Hydrotechnique de France, Mar 2023, Chatou/Paris, France. pp.126-131
Communication dans un congrès hal-04045081v1
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Integrated chain for the hydrometeorological forecasting of low flows and droughts in France. The CIPRHES project

Charles Perrin , Vazken Andréassian , Pierre Bernard , François Bourgin , Olivier Delaigue
IAHS-2022 Scientific Assembly, May 2022, Montpellier, France
Communication dans un congrès hal-03702637v1

Comparaison de séries climatiques historiques dans les bassins versants de la Meuse et de la Moselle

C. Delus , B. Grelier , D. Francois , G. Drogue , Jean-Philippe Vidal
Bases de données et modèles climatiques. Séminaire de la commission "Changements climatiques et territoires" du CNFG, CRC, Mar 2019, Dijon, France. pp.23
Communication dans un congrès hal-02609259v1
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Low flow characterization and forecasting in a non-stationary context

Hajar El Khalfi , Claire Lang-Delus , Gilles Drogue , Sébastien Lebaut , Luc Manceau
The XIth Scientific Assembly of the international Association of Hydrological Sciences, May 2022, Montpellier, France
Poster de conférence hal-03705434v1