Ara es mostren els items 1-20 de 44

  • 3D downscaling model for radar-based precipitation fields 

    Llort Pavon, Xavier; Berenguer Ferrer, Marc; Franco Lanao, Maria; Sánchez-Diezma Guijarro, Rafael; Sempere Torres, Daniel (2006-10)
    Article
    Accés obert
  • Adding value to the measurements of an X-band radar on Catalonian coast 

    Berenguer Ferrer, Marc; Sempere Torres, Daniel (2012-08)
    Article
    Accés obert
    Rainscanner@Barcelona is an experiment assessing the hydrological value of a small X-band radar in urban areas.
  • A fuzzy logic technique for identifying nonprecipitating echoes in radar scans 

    Berenguer Ferrer, Marc; Sempere Torres, Daniel; Corral Alexandri, Carles; Sánchez-Diezma Guijarro, Rafael (American Meteorological Society, 2006-09)
    Article
    Accés obert
    Because echoes caused by nonmeteorological targets significantly affect radar scans, contaminated bins must be identified and eliminated before precipitation can be quantitatively estimated from radar measurements. Under ...
  • A methodology for attenuation correction based on the minimization of a cost function 

    Berenguer Ferrer, Marc; Lee, G.; Sempere Torres, Daniel; Zawadzki, Isztar (American Meteorological Society, 2003)
    Text en actes de congrés
    Accés obert
  • Analysis of the radar distance error structure through a simulation approach 

    Llort Pavon, Xavier; Berenguer Ferrer, Marc; Sánchez-Diezma Guijarro, Rafael; Sempere Torres, Daniel (2006)
    Text en actes de congrés
    Accés obert
  • An inverse method to retrieve 3D radar reflectivity composites 

    Roca Sancho, Jordi; Berenguer Ferrer, Marc; Sempere Torres, Daniel (Elsevier, 2014-11)
    Article
    Accés obert
    Dense radar networks offer the possibility of getting better Quantitative Precipitation Estimates (QPE) than those obtained with individual radars, as they allow increasing the coverage and improving quality of rainfall ...
  • An operational flood warning system for poorly gauged basins: demonstration in the Guadalhorce basin (Spain) 

    Versini, Pierre Antonie; Berenguer Ferrer, Marc; Corral Alexandri, Carles; Sempere Torres, Daniel (2013-11-01)
    Article
    Accés restringit per política de l'editorial
    This paper deals with the presentation of a flood warning system (GFWS) developed for the specific characteristics of the Guadalhorce basin (3,200 km2, SE of Spain), which is poorly gauged and often affected by flash and ...
  • A radar-based flash flood forecasting for the Llobregat river basin in the Catalonia region (Spain) 

    Quintero Duque, Felipe; Versini, Pierre Antonie; Baltas, Evangelos; Berenguer Ferrer, Marc; Sempere Torres, Daniel (American Meteorological Society, 2011)
    Comunicació de congrés
    Accés obert
    In this research paper, a flash flood modeling system implemented in a Mediterranean river basin is presented. Radar precipitation estimation along with hydrological modeling techniques are implemented within the system ...
  • A scenario-incorporating analysis of the propagation of uncertainty to flash flood simulations 

    Quintero Duque, Felipe; Sempere Torres, Daniel; Berenguer Ferrer, Marc; Baltas, Evangelos (Elsevier, 2012-08)
    Article
    Accés restringit per política de l'editorial
    This study proposes a methodology to analyze the propagation of uncertainty arising from radar rainfall and model parameter estimation to the flow simulations obtained from flash flood modeling. For this purpose an ensemble ...
  • A semi-distributed hydrological model using rainfall estimates by radar. Application to Mediterranean basins 

    Corral Alexandri, Carles; Sempere Torres, Daniel; Revilla Queraltó, Mercè; Berenguer Ferrer, Marc (Elsevier, 2000-09)
    Article
    Accés restringit per política de l'editorial
  • A variational approach to retrieve 3D radar reflectivity composites 

    Roca Sancho, Jordi; Berenguer Ferrer, Marc; Sempere Torres, Daniel (American Meteorological Society, 2011)
    Comunicació de congrés
    Accés obert
    This study proposes an alternative methodology to obtain high-resolution radar reflectivity composites based on a variational approach considering different error sources in an explicit manner. The methodology retrieves ...
  • A water availability prediction system for water management 

    Llort Pavon, Xavier; Rodríguez, Álvaro; Sancho, David; Sánchez-Diezma Guijarro, Rafael; Cangròs Alonso, Arnau; Muñoz Morillo, Esteban; Berenguer Ferrer, Marc; Sempere Torres, Daniel (2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this work we present a Water Availability Prediction System [WAPS] developed and implemented within two EU-FP7 projects: UrbanWater and WatERP. The aim of the WAPS is to provide information for management purposes, and ...
  • Bias-corrected nonparametric correlograms for geostatistical radar-raingauge combination 

    Schiemann, Reinhard; Erdin, Rebekka; Willi, Marco; Frei, Christoph; Berenguer Ferrer, Marc; Sempere Torres, Daniel (2010)
    Comunicació de congrés
    Accés obert
    Geostatistical methods have been widely used for quantitative precipitation estimation (QPE) based on the combination of radar and raingauge observations. They are flexible and accurate and allow for radar-raingauge ...
  • Blending of radar and gauge rainfall measurements: a preliminary analysis of the impact of radar errors 

    Sempere Torres, Daniel; Berenguer Ferrer, Marc; Velasco Forero, Carlos Alfonso (International Association of Hydrological Sciences (IAHS), 2011)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Several methodologies have been proposed to combine radar and raingauge measurements with the aim of generating improved quantitative precipitation estimates (QPEs). These methods are based on interpolating point raingauge ...
  • Blending of radar and gauge rainfall measurements: a preliminary analysis of the impact of radar errors 

    Sempere Torres, Daniel; Berenguer Ferrer, Marc; Velasco Forero, Carlos Alfonso (International Association of Hydrological Sciences (IAHS), 2012-08)
    Capítol de llibre
    Accés restringit per política de l'editorial
    Several methodologies have been proposed to combine radar and raingauge measurements with the aim of generating improved quantitative precipitation estimates (QPEs). These methods are based on interpolating point raingauge ...
  • 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 ...
  • 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 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 ...
  • 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; de Medina Iglesias, Vicente César; 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 ...
  • 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 ...