Now showing items 1-20 of 76

    • A mediterranean nocturnal heavy rainfall and tornadic event. Part I: overview, damage survey and radar analysis 

      Van der Velde, Oscar Arnoud; Bech, Joan; Pineda Rüegg, Nicolau; Rigo, Tomeu; Aran, Montserrat; Amaró, Jésica; Gayà, M; Arús, J; Montañá Puig, Juan (2011-01-03)
      Article
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      This study presents an analysis of a severe weather case that took place during the early morning of the 2nd of November 2008, when intense convective activity associated with a rapidly evolving low pressure system affected ...
    • A propagative model for simulations of electric fields produced by downward leaders 

      Hermoso Costa, Juan Ramón; Montañá Puig, Juan; March Nomen, Víctor; Van der Velde, Oscar Arnoud; Solà de las Fuentes, Glòria; Romero Durán, David; Hermoso Alameda, Blas; Pineda Rüegg, Nicolau (2012-07-13)
      Article
      Open Access
      Comparisons of simulated downward negative leaders with experimental measurements are presented in this paper. In order to simplify, the leaders are considered to progress vertically and charge distributions and leader ...
    • A propagative model for simulations of electric fields produced by downward leaders 

      Hermoso Costa, Juan Ramón; Montañá Puig, Juan; March Nomen, Víctor; Romero Durán, David; Solà de las Fuentes, Glòria; Van der Velde, Oscar Arnoud (2010)
      Conference lecture
      Restricted access - author's decision
      This paper presents simulations of a downward negative leaders performed by means of 3D finite element method (FEM). The leaders are considered do progress vertically leaders in which different charge distributions and ...
    • An observational description of a tornadic severe weather event 

      Bech, Joan; Pineda Rüegg, Nicolau; Aran, M; Amaro, J; Gayà, M; Arús, J; Montañá Puig, Juan; Van der Velde, Oscar Arnoud (2009)
      Conference lecture
      Restricted access - author's decision
      This study presents an analysis of a severe weather case study that took place during the early morning of the 2nd of November 2008, when intense convective activity associated to a rapidly evolving low pressure system ...
    • Analysis of energetic radiation associated with thunderstorms in the Ebro delta region in Spain 

      Fabró Tàpia, Ferran; Montañá Puig, Juan; Pineda Rüegg, Nicolau; Argemí Ribera, Oriol; Van der Velde, Oscar Arnoud; Romero Durán, David; Soula, Serge (2016-08-25)
      Article
      Open Access
      The analysis of high-energy background radiation (0.1 – 2 MeV) enhancements during eight winter thunderstorms and ¿ve summer storms in the Ebro delta region in the northeast of Spain is presented. For the ¿rst time, ...
    • Analysis of five Gigantic Jets observed near Réunion Island with video and photographic cameras 

      Soula, Serge; Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Huet, Patrice; Barthe, Christelle; Bor, Jozsef (Elsevier, 2011)
      Conference report
      Open Access
      Five gigantic jets (GJ) have been recorded by a camera on March 7th 2010, at a very closedistance above an isolated tropical storm east of Réunion Island. Three of them were produced within about 4 minutes before the storm ...
    • Analysis of global Terrestrial Gamma Ray Flashes distribution and special focus on AGILE detections over South America 

      Fabró Tàpia, Ferran; Montañá Puig, Juan; Marisaldi, Martino; Van der Velde, Oscar Arnoud; Fuschino, Fabio (2015-03-01)
      Article
      Open Access
      Global distribution of the Terrestrial Gamma-ray Flashes (TGFs) detected by AGILE and RHESSI for the period from March 2009 to July 2012 has been analysed. A fourth TGF production region has been distinguished over the ...
    • Analysis of lightning activity and electromagnetic radiations associated with large TLEs 

      Soula, Serge; Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Fargues, Thomas; Bor, Jozsef; Waysand, Georges (2010)
      Conference lecture
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    • Analysis of lightning associated with a sprite displaced from its parent positive cloud to ground lightning flash 

      Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Soula, Serge; Neubert, Torsten; Bech, Joan; Mika, Agnes (2007)
      Conference lecture
      Restricted access - author's decision
    • Analysis of the first gigantic jet recorded over continental North America 

      Van der Velde, Oscar Arnoud; Lyons, Walter A.; Nelson, Thomas E.; Cummer, Steven A.; Li, Jingbo; Bunnell, James (2007-10-17)
      Article
      Open Access
      [1] Two low-light cameras near Marfa, Texas, recorded a gigantic jet over northern Mexico on 13 May 2005 at approximately 0423:50 UTC. Assuming that the farthest of two candidate storm systems was its source, the bright ...
    • Analysis of the lightning production of convective cells 

      Figueras i Ventura, Jordi; Pineda Rüegg, Nicolau; Besic, Nikola; Grazioli, Jacopo; Hering, Alessandro; Van der Velde, Oscar Arnoud; Romero Durán, David; Sunjerga, A.; Mostajabi, A.; Azadifar, M.; Rubinstein, M.; Montanya, Joan; Germann, Urs; Rachidi-Haeri, Farhad (2019-10-22)
      Article
      Open Access
      This paper presents an analysis of the lightning production of convective cells. The cells were detected by the MeteoSwiss Thunderstorms Radar Tracking (TRT) algorithm in the course of a lightning measurement campaign that ...
    • Analysis of thunderstorm systems and lightning activity associated with sprites 

      Soula, Serge; Van der Velde, Oscar Arnoud; Montañá Puig, Juan (2006)
      Conference lecture
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    • Analysis of thunderstorms and lightning activity associated with sprites observed during the Eurosprite campaigns: two case studies 

      Soula, Serge; Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Mika, Agnes; Haldoupis, Christos; Neubert, Torsten; Ganot, Michael; Labbouz, Laurent (2007)
      Conference lecture
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    • Automated analysis and statistics of lightning leader speed, local flash rates and electric charge structure in thunderstorms 

      Van der Velde, Oscar Arnoud; Montanya, Joan; López Trujillo, Jesús Alberto (2018)
      Conference lecture
      Open Access
      We introduce new methods for the analysis of complex three-dimensional lightning data produced by Lightning Mapping Arrays and illustrate them by cases of a mid-latitude severe weather producing thunderstorm and a tropical ...
    • Basic lightning flash properties derived from lightning mapping array data 

      Montañá Puig, Juan; Pineda Ruegg, Nicolau; Van der Velde, Oscar Arnoud; Solà de las Fuentes, Glòria; Argemí Ribera, Oriol; Fabró Tàpia, Ferran; Romero Durán, David; Aranguren Fino, Daniel (2016)
      Conference report
      Open Access
      The size and duration of lightning flashes are examined. Data from the Ebro Valley Laboratory Lightning Mapping Array is used as reference. Additional data from the VLF/LF LINET network is included. In the analysis, each ...
    • Characteristics and conditions of production of TLEs observed over a maritime storm 

      Soula, Serge; Van der Velde, Oscar Arnoud; Palmiéri, J.; Chanrion, Olivier; Montañá Puig, Juan; Lefeuvre, F. (2009)
      Conference lecture
      Restricted access - author's decision
      The coordinated European campaign of TLE observation in 2007 involved several cameras in southern France and northern Spain and lasted several months of summer, fall, and winter. Thanks to good conditions of observation ...
    • Characteristics and conditions of production of transient luminous events observed over a maritime storm 

      Lointier, G.; Lefeuvre, F.; Soula, Serge; Van der Velde, Oscar Arnoud; Palmiéri, J.; Chanrion, Olivier; Neubert, Torsten; Montañá Puig, Juan; Gangneron, F.; Meyerfeld, Y. (2010-07-08)
      Article
      Restricted access - publisher's policy
      On the night of 15/16 November 2007, cameras in southern France detected 30 transient luminous events (TLEs) over a storm located in the Corsican region (France). Among these TLEs, 19 were sprites, 6 were halos, and 5 were ...
    • Characteristics of lightning flashes generating dancing sprites above thunderstorms 

      Soula, Serge; Mlynarczyk, Janusz; Fullekrug, Martin; Georgis, Jean-Francois; Pineda Rüegg, Nicolau; Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Fabró Tàpia, Ferran (2017)
      Conference lecture
      Open Access
      During the night of October 29-30, 2013, a low-light video camera at Pic du Midi (2877 m) in the French Pyrénées, recorded TLEs above a very active storm over the Mediterranean Sea. The minimum cloud top temperature reached ...
    • Characteristics of lightning flashes generating sprites above storms (i-DUST) 

      Soula, Serge; Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Fullekrug, Martin; Mezentsev, Andrew; Mlynarczyk, Janusz (EDP Sciences, 2016)
      Conference report
      Open Access
      Sprites are Transient Luminous Events (TLEs) that can extend vertically from 40 to 90 km and horizontally over several tens of km to form clusters of individual or multiple column or/and carrot-shaped luminous elements. ...
    • Characteristics of lightning related to wildfire ignitions in Catalonia 

      Pineda Rüegg, Nicolau; Montañá Puig, Juan; Van der Velde, Oscar Arnoud (2012-07-21)
      Article
      Restricted access - publisher's policy
      What are the characteristics of lightning that influence the probability that an individual stroke will ignite a wildfire? It is generally accepted that long continuing current following some return strokes is the cause ...