Towards a database on societal impact of Mediterranean  floods within the framework of the HYMEX project

Llasat, M. C.; Llasat-Botija, Montserrat; Petrucci, Olga; Pasqua, Angela Aurora; Rosselló, Joan; Vinet, Freddy; Boissier, Laurent

doi:10.5194/nhess-13-1337-2013

Cited by 153 publications

(135 citation statements)

References 23 publications

(22 reference statements)

Supporting

Mentioning

127

Contrasting

Unclassified

Order By: Relevance

“…In the early 1990s a comprehensive re-evaluation of the HBV model routines was carried out (Lindstrom et al, 1997), which resulted in the HBV-96 version. In this study the WFLOW-HBV model is used for modelling the Genoa flash flood.…”

Section: Hbvmentioning

confidence: 99%

Hydrometeorological multi-model ensemble simulations of the 4 November 2011 flash flood event in Genoa, Italy, in the framework of the DRIHM project

Hally

Caumont

Garrote

et al. 2015

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. The e-Science environment developed in the framework of the EU-funded DRIHM project was used to demonstrate its ability to provide relevant, meaningful hydrometeorological forecasts. This was illustrated for the tragic case of 4 November 2011, when Genoa, Italy, was flooded as the result of heavy, convective precipitation that inundated the Bisagno catchment. The Meteorological Model Bridge (MMB), an innovative software component developed within the DRIHM project for the interoperability of meteorological and hydrological models, is a key component of the DRIHM e-Science environment. The MMB allowed three different rainfall-discharge models (DRiFt, RIBS and HBV) to be driven by four mesoscale limited-area atmospheric models (WRF-NMM, WRF-ARW, Meso-NH and AROME) and a downscaling algorithm (Rain-FARM) in a seamless fashion. In addition to this multi-model configuration, some of the models were run in probabilistic mode, thus giving a comprehensive account of modelling errors and a very large amount of likely hydrometeorological scenarios ( > 1500). The multi-model approach proved to be necessary because, whilst various aspects of the event were successfully simulated by different models, none of the models reproduced all of these aspects correctly. It was shown that the resulting set of simulations helped identify key atmospheric processes responsible for the large rainfall accumulations over the Bisagno basin. The DRIHM e-Science environment facilitated an evaluation of the sensitivity to atmospheric and hydrological modelling errors. This showed that both had a significant impact on predicted discharges, the former being larger than the latter. Finally, the usefulness of the set of hydrometeorological simulations was assessed from a flash flood early-warning perspective.

show abstract

Section: Hbvmentioning

confidence: 99%

Hydrometeorological multi-model ensemble simulations of the 4 November 2011 flash flood event in Genoa, Italy, in the framework of the DRIHM project

Hally

Caumont

Garrote

et al. 2015

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…The resulting flash floods can lead to economic damage and even fatalities (see Llasat et al, 2013 for a list of such events over the northwestern Mediterranean). Clearly these high-impact weather events need to be accurately forecast, leading to the development of dedicated international research projects.…”

Section: Introductionmentioning

confidence: 99%

An ensemble study of HyMeX IOP6 and IOP7a: sensitivity to physical and initial and boundary condition uncertainties

Hally

Richard

Ducrocq³

2014

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. The first Special Observation Period of the HyMeX campaign took place in the Mediterranean betweenSeptember and November 2012 with the aim of better understanding the mechanisms which lead to heavy precipitation events (HPEs) in the region during the autumn months. Two such events, referred to as Intensive Observation Period 6 (IOP6) and Intensive Observation Period 7a (IOP7a), occurred respectively on 24 and 26 September over southeastern France. IOP6 was characterised by moderate to weak low-level flow which led to heavy and concentrated convective rainfall over the plains near the coast, while IOP7a had strong low-level flow and consisted of a convective line over the mountainous regions further north and a band of stratiform rainfall further east. Firstly, an ensemble was constructed for each IOP using analyses from the AROME, AROME-WMED, ARPEGE and ECMWF operational models as initial (IC) and boundary (BC) conditions for the research model Meso-NH at a resolution of 2.5 km. A high level of model skill was seen for IOP7a, with a lower level of agreement with the observations for IOP6. Using the most accurate member of this ensemble as a CTRL simulation, three further ensembles were constructed in order to study uncertainties related to cloud physics and surface turbulence parameterisations. Perturbations were introduced by perturbing the time tendencies of the warm and cold microphysical and turbulence processes. An ensemble where all three sources of uncertainty were perturbed gave the greatest degree of dispersion in the surface rainfall for both IOPs. Comparing the level of dispersion to that of the ICBC ensemble demonstrated that when model skill is low (high) and lowlevel flow is weak to moderate (strong), the level of dispersion of the ICBC and physical perturbation ensembles is (is not) comparable. The level of sensitivity to these perturbations is thus concluded to be case dependent.

show abstract

“…However, information on the type of damage is still lacking. At the European scale, the HyMeX project has led to the creation of a database recording the societal impact of Mediterranean floods (Llasat et al, 2013). This database has gathered 385 flood events which occurred between 1981 and 2010.…”

Section: Damage Data Collectionmentioning

confidence: 99%

“…This enables the potential users to cross DamaGIS with any other data sources such as the research "FloodHymex database" (http://mistrals.sedoo. fr/HyMeX/?project_name=HyMeX) (Llasat et al, 2013).…”

Section: Structure Of the Databasementioning

confidence: 99%

DamaGIS: a multisource geodatabase for collection of flood-related damage data

Saint-Martin

Javelle

Vinet

2018

Earth Syst. Sci. Data

View full text Add to dashboard Cite

Abstract. Every year in France, recurring flood events result in several million euros of damage, and reducing the heavy consequences of floods has become a high priority. However, actions to reduce the impact of floods are often hindered by the lack of damage data on past flood events. The present paper introduces a new database for collection and assessment of flood-related damage. The DamaGIS database offers an innovative bottom-up approach to gather and identify damage data from multiple sources, including new media. The study area has been defined as the south of France considering the high frequency of floods over the past years. This paper presents the structure and contents of the database. It also presents operating instructions in order to keep collecting damage data within the database. This paper also describes an easily reproducible method to assess the severity of flood damage regardless of the location or date of occurrence. A first analysis of the damage contents is also provided in order to assess data quality and the relevance of the database. According to this analysis, despite its lack of comprehensiveness, the DamaGIS database presents many advantages. Indeed, DamaGIS provides a high accuracy of data as well as simplicity of use. It also has the additional benefit of being accessible in multiple formats and is open access. The DamaGIS database is available at https://doi.org/10.5281/zenodo.1241089.

show abstract

Towards a database on societal impact of Mediterranean floods within the framework of the HYMEX project

Cited by 153 publications

References 23 publications

Hydrometeorological multi-model ensemble simulations of the 4 November 2011 flash flood event in Genoa, Italy, in the framework of the DRIHM project

Hydrometeorological multi-model ensemble simulations of the 4 November 2011 flash flood event in Genoa, Italy, in the framework of the DRIHM project

An ensemble study of HyMeX IOP6 and IOP7a: sensitivity to physical and initial and boundary condition uncertainties

DamaGIS: a multisource geodatabase for collection of flood-related damage data

Contact Info

Product

Resources

About