El principal objectiu del CRAHI és desenvolupar metodologies i sistemes per donar resposta científica i tècnica a les necessitats en el camp de la previsió hidrometeorològica, la gestió dels recursos i els riscos hídrometeorològics, incloent l’impacte dels efectes del canvi climàtic. Per això es combinen les observacions i el processat de dades de teledetecció amb la modelització dels processos i el disseny d'aplicacions informàtiques operacionals de previsió i alerta en temps real pel suport a la presa de decisions i la gestió de recursos i emergències.

El CRAHI orienta su actividad a dar respuesta científica y tecnológica a las necesidades en el campo de la gestión y la previsión hidrometeorológica. En particular al desarrollo de algoritmos y modelos de previsión de los procesos que controlan el ciclo del agua superficial.

The CRAHI focuses its activity on providing scientific and technological support in the area of hydrometeorological management and forecasting, particularly on developing models of the processes that drive the cycle of surface waters.

The CRAHI focuses its activity on providing scientific and technological support in the area of hydrometeorological management and forecasting, particularly on developing models of the processes that drive the cycle of surface waters.

Recent Submissions

  • Long-term analysis of gauge-adjusted radar rainfall accumulations at European scale 

    Park, Shinju; Berenguer Ferrer, Marc; Sempere Torres, Daniel (Elsevier, 2019-06)
    Article
    Restricted access - publisher's policy
    Monitoring continental precipitation over Europe with high resolution (2 km, 15 min) has been possible since the operational production of the OPERA composites from the European weather radar networks. The OPERA data are ...
  • Anticipating cascading effects of extreme precipitation with pathway schemes: three case studies from Europe 

    Schauwecker, Simone; Gascón, Estíbaliz; Park, Shinju; Sempere Torres, Daniel (Elsevier, 2019-06)
    Article
    Open Access
    Extreme precipitation events with high local precipitation intensities, heavy snowfall or extensive freezing rain can have devastating impacts on society and economy. Not only is the quantitative forecast of such events ...
  • 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
    Restricted access - publisher's policy
    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 ...
  • Validation of a new multiclass mesoscopic simulator based on individual vehicles for dynamic network loading 

    Linares Herreros, María Paz; Carmona Bautista, Carlos; Barceló Bugeda, Jaime; Montañola Sales, Cristina (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    The dynamic network loading problem is crucial for performing dynamic traffic assignment. It must reproduce the network flow propagation, while taking into account the time and a variable traffic demand on each path of the ...
  • Intercomparison of attenuation correction algorithms for single-polarized X-band radars 

    Lengfeld, Katharina; Berenguer Ferrer, Marc; Sempere Torres, Daniel (2018-03)
    Article
    Restricted access - publisher's policy
    Attenuation due to liquid water is one of the largest uncertainties in radar observations. The effects of attenuation are generally inversely proportional to the wavelength, i.e. observations from X-band radars are more ...
  • Scale characterization and correction of diurnal cycle errors in MAPLE 

    Atencia, Aitor; Zawadzki, Isztar; Berenguer Ferrer, Marc (2017-09)
    Article
    Open Access
    The most widely used technique for nowcasting of quantitative precipitation in operational and research centers is the Lagrangian extrapolation of the latest radar observations. However, this technique has a limited forecast ...
  • Comparison of TRMM Radar Rainfall Estimates with NOAA Next Generation QPE 

    Amitai, Eyal; Llort Pavon, Xavier; Sempere Torres, Daniel (2009-01)
    Article
    Restricted access - publisher's policy
    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 ...
  • Sistema de alerta para procesos torrenciales a escala regional combinando mapas de susceptibilidad y datos del radar meteorológico 

    Hurlimann Ziegler, Marcel; Berenguer Ferrer, Marc; Palau, Rosa M.; Sempere Torres, Daniel (International Centre for Numerical Methods in Engineering (CIMNE), 2017)
    Conference report
    Open Access
    Los procesos torrenciales como las corrientes de derrubios o flujos hiperconcentrados causan frecuentemente daños importantes e incluso muertos en zonas montañosas. Para afrontar este peligro, los sistemas de alerta son ...
  • Flash flood forecasting based on rainfall thresholds 

    Alfieri, Lorenzo; Berenguer Ferrer, Marc; Knechtl, Valentin; Liechti, Katharina; Sempere Torres, Daniel; Zappa, M (Springer, 2017)
    Part of book or chapter of book
    Restricted access - publisher's policy
  • Critical rainfall conditions for the initiation of torrential flows: results from the Rebaixader catchment (Central Pyrenees) 

    Abanco Martínez de Arenzana, Claudia; Hurlimann Ziegler, Marcel; Moya Sánchez, José; Berenguer Ferrer, Marc (Elsevier, 2016-10)
    Article
    Open Access
    Torrential flows like debris flows or debris floods are fast movements formed by a mix of water and different amounts of unsorted solid material. They generally occur in steep torrents and pose high risk in mountainous ...
  • Debris-flow monitoring for the set-up of a warning and alarm system: experiences from the pyrenees 

    Hurlimann Ziegler, Marcel; Abanco Martínez de Arenzana, Claudia; Moya Sánchez, José; Berenguer Ferrer, Marc; Vilajosana, Ignasi (2016-08)
    Article
    Restricted access - publisher's policy
    Debris-flow monitoring sites provide many important inputs on their mechanics and strongly improved the understanding on this hazardous process. Monitoring data are the basis for future early warning systems (EWS) and alarm ...
  • The great Colorado flood of September 2013 

    Gochis, David; Rutledge, Steven A.; Sempere Torres, Daniel; Steiner, Matthias; Chandrasekar, V. (2015-09-01)
    Article
    Open Access
    During the second week of September 2013, a seasonally uncharacteristic weather pattern stalled over the Rocky Mountain Front Range region of northern Colorado bringing with it copious amounts of moisture from the Gulf of ...

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