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Ara es mostren els items 19-38 de 59

    • Comparison of TRMM Radar Rainfall Estimates with NOAA Next Generation QPE 

      Amitai, Eyal; Llort Pavon, Xavier; Sempere Torres, Daniel (2009-01)
      Article
      Accés restringit per política de l'editorial
      Rainfall rate fields based on TRMM spaceborne radar observations are compared to those based on the new NOAA Next-Generation Quantitative Precipitation Estimation (QPE) high-resolution national mosaic product (Q2). These ...

    • Comparison of two early warning systems for regional flash flood hazard forecasting 

      Corral Alexandri, Carles; Berenguer Ferrer, Marc; Sempere Torres, Daniel; Poletti, Laura; Silvestro, Francesco; Rebora, Nicola (Elsevier, 2019-05)
      Article
      Accés obert
      The anticipation of flash flood events is crucial to issue warnings to mitigate their impact. This work presents a comparison of two early warning systems for real-time flash flood hazard forecasting at regional scale. The ...

    • Compound flood impact forecasting: integrating fluvial and flash flood impact assessments into a unified system 

      Ritter, Josias Manuel Gisbert; Berenguer Ferrer, Marc; Dottori, Francesco; Kalas, Milan; Sempere Torres, Daniel (2022-02)
      Article
      Accés obert
      Floods can arise from a variety of physical processes. Although numerous risk assessment approaches stress the importance of taking into account the possible combinations of flood types (i.e. compound floods), this awareness ...

    • Consecuencias hidrológicas de los incendios forestales 

      Sempere Torres, Daniel; Urbano-Ispiuza, Álvaro; Lavabre, Jacques; Dolz Ripollès, Josep (1994)
      Article
      Accés obert
      La alteración del terreno y la destrucción de la vegetación debida a los incendios provoca cambios importantes en las características hidrológicas de las cuencas afectadas. El presente estudio aborda una cuantificación ...

    • Debris flow warning through radar nowcasting and critical rainfall thresholds: a case study in the Glarus catchment (Switzerland) 

      Mitidieri, Francesco; Papa, Maria Nicolina; Ciervo, Fabio; Berenguer Ferrer, Marc; Sempere Torres, Daniel; Medina Iglesias, Vicente César de; Bateman Pinzón, Allen (Springer, 2015)
      Capítol de llibre
      Accés restringit per política de l'editorial
      The mitigation of debris flow (DF) risk can be achieved by the means of reliable warning systems. At present time, operational warning systems are mostly based on critical rainfall thresholds (CRT) derived through the ...

    • Debris-flow early warning system at regional scale using weather radar and susceptibility mapping 

      Palau Berastegui, Rosa Maria; Hurlimann Ziegler, Marcel; Berenguer Ferrer, Marc; Sempere Torres, Daniel (Association of Environmental & Engineering Geologists (AEG), 2019)
      Comunicació de congrés
      Accés obert
      Risk mitigation for debris flows at regional scale is a challenge. Early warning systems are helpful in depicting the time and the location of future debris flows so that emergency responders can act in advance before the ...

    • Debris-flow forecasting at regional scale by combining susceptibility mapping and radar rainfall 

      Berenguer Ferrer, Marc; Sempere Torres, Daniel; Hurlimann Ziegler, Marcel (2015-03-13)
      Article
      Accés obert
      This work presents a technique for debris-flow (DF) forecasting able to be used in the framework of DF early warning systems at regional scale. The developed system is applied at subbasin scale and is based on the concepts ...

    • Design and evaluation of a community and impact-based site-specific early warning system (SS-EWS): the SS-EWS framework 

      Meléndez Landaverde, Erika Roxana; Sempere Torres, Daniel (2022-10)
      Article
      Accés obert
      The recent extreme rainfall events in Spain such as the storm Gloria have highlighted the gaps in emergency communication, particularly the disconnect between the available impact-based early warning systems (IBEWSs) and ...

    • Edge effect causes apparent fractal correlation dimension of uniform spatial raindrop distribution 

      Uijlenhoet, Remko; Porra, J. M.; Sempere Torres, Daniel; Creutin, Jean-Dominique (University of Thechnology and Agriculture Nicholas Copernicus University, 2009-04)
      Article
      Accés obert
      Lovejoy and Schertzer (1990a) presented a statistical analysis of blotting paper observations of the (twodimensional) spatial distribution of raindrop stains. They found empirical evidence for the fractal scaling behavior ...

    • El episodio pluviométrico del 10 de junio en Cataluña. Un primer estudio hidrometeorológico 

      Sempere Torres, Daniel; Corral Alexandri, Carles; Berenguer, Marc; Sánchez-Diezma Guijarro, Rafael; Dolz Ripollès, Josep (Fundación para el Fomento de la Ingeniería del Agua, 2000-06)
      Article
      Accés obert
      En este artículo se estudia el episodio pluviométrico registrado el día 10 de junio de 2000 en Cataluña. En particular se analiza la lluvia caída en la cuenca de 97 km2 correspondiente a la riera de Magarola en su cruce ...

    • El episodio pluviométrico del 10 de junio en Cataluña: un primer estudio hidrometeorológico 

      Sempere Torres, Daniel; Corral Alexandri, Carles; Berenguer Ferrer, Marc; Sánchez-Diezma Guijarro, Rafael; Dolz Ripollès, Josep (2000-06)
      Article
      Accés obert
      En este artículo se estudia el episodio pluviométrico registrado el día 10 de junio de 2000 en Cataluña. En particular se analiza la lluvia caída en la cuenca de 97 km2 correspondiente a la riera de Magarola en su cruce ...

    • Ensemble radar precipitation estimation for nowcasting and hydrology in the Alps 

      Germann, Urs; Hering, Alessandro; Berenguer Ferrer, Marc; Sempere Torres, Daniel; Salvadè, Georges (2006)
      Text en actes de congrés
      Accés obert
      This paper explores the novel idea of generating ensables of radar precipitation estimates.

    • Flash flood forecasting based on rainfall thresholds 

      Alfieri, Lorenzo; Berenguer Ferrer, Marc; Knechtl, Valentin; Liechti, Katharina; Sempere Torres, Daniel; Zappa, M (Springer, 2017)
      Capítol de llibre
      Accés restringit per política de l'editorial

    • FloodAlert: a simplified radar-based EWS for urban flood warning 

      Llort Pavon, Xavier; Sánchez-Diezma Guijarro, Rafael; Rodríguez, Álvaro; Sancho, David; Berenguer Ferrer, Marc; Sempere Torres, Daniel (2014)
      Text en actes de congrés
      Accés obert
      In this work we present FloodAlert, a simplified flood Early Warning System [EWS] based on the use of radar observations and radar nowcasting to issue local flood warnings. It is a web-based platform and it is complemented ...

    • Geostatistical radar-raingauge combination with nonparametric correlograms: methodological considerations and application in Switzerland 

      Schiemann, Reinhard; Erdin, Rebecca; Willi, Marco; Frei, Christoph; Berenguer Ferrer, Marc; Sempere Torres, Daniel (2011-05-19)
      Article
      Accés obert
      Modelling spatial covariance is an essential part of all geostatistical methods. Traditionally, parametric semivariogram models are fit from available data. More recently, it has been suggested to use nonparametric ...

    • Gestió de riscos torrencials: el projecte IMPRINTS 

      Berenguer Ferrer, Marc; Sempere Torres, Daniel (2013)
      Text en actes de congrés
      Accés obert
      En aquest article s’hi presenten els elements necessaris per la generació d’alertes d’inundacions torrencials en temps real, prenent com a exemple l’eina desenvolupada en el Projecte del 7è Programa Marc “IMproving ...

    • Hydrological evaluation of a nowcasting technique applied to flood forecasting 

      Berenguer Ferrer, Marc; Dàvila, J.; Corral Alexandri, Carles; Sempere Torres, Daniel; Seed, Alan (American Meteorological Society, 2003)
      Text en actes de congrés
      Accés obert

    • Hydrological validation of a radar-based nowcasting technique 

      Berenguer Ferrer, Marc; Corral Alexandri, Carles; Sánchez-Diezma Guijarro, Rafael; Sempere Torres, Daniel (2005-08)
      Article
      Accés obert
      Nowcasting precipitation is a key element in the anticipation of floods in warning systems. In this framework, weather radars are very useful because of the high resolution of their measurements both in time and space. ...

    • Identification of clutter echoes using a fuzzy logic technique 

      Berenguer Ferrer, Marc; Sempere Torres, Daniel; Sánchez-Diezma Guijarro, Rafael; Pascual Berghaenel, Ramon (2005)
      Comunicació de congrés
      Accés obert

    • Implementation of hydrometeorological thresholds for regional landslide warning in Catalonia (NE Spain) 

      Palau Berastegui, Rosa Maria; Berenguer Ferrer, Marc; Hurlimann Ziegler, Marcel; Sempere Torres, Daniel (Springer, 2023-10)
      Article
      Accés obert
      Soil moisture plays a vital role in slope stability. As water infiltrates into the soil, shear strength decreases eventually leading to failure. However, most of the existing regional-scale landslide early warning systems ...