Ara es mostren els items 20-32 de 32

  • Observation and properties of a sub-cloud bidirectional leader 

    Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Williams, Earle R.; Pineda Ruegg, Nicolau; Romero Durán, David (2014)
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    In this paper we present the evolution of a bidirectional leader which appeared in ‘virgin’ air. In the observations we did not find any delay between the onsets of the two leader ends. The positive leader end presented a ...
  • Observations of Western Mediterranean TLE: LS8000 intracloud lightning and high-speed video 

    Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Romero Durán, David; Soula, Serge; Pineda Ruegg, Nicolau; Bech, Joan; Reglero, V. (2009)
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    Transient luminous events (TLE) are electrical phenomena occurring between the ionosphere and the tops of thunderstorms. First discovered in 1989, the family of TLE now consists of different members: sprites, sprite ...
  • Registration of X-rays at 2500 m altitude in association with lightning flashes and thunderstorms 

    Montañá Puig, Juan; Fabró Tàpia, Ferran; Van der Velde, Oscar Arnoud; Romero Durán, David; Solà de Las Fuentes, Gloria; Hermoso Costa, Juan Ramón; Soula, Serge; Williams, Earle; Pineda Ruegg, Nicolau (2014)
    Article
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    Electric fields and high-energy radiation of natural lightning measured at close range from a mountaintop tower are discussed. In none of the 12 negative cloud-to-ground upward flashes were X-rays observed. Also no energetic ...
  • Study of the total lightning activity in a hailstorm 

    Montañá Puig, Juan; Soula, Serge; Pineda Ruegg, Nicolau; Van der Velde, Oscar Arnoud; Clapers, Pere; Solà de Las Fuentes, Gloria; Bech, Joan; Romero Durán, David (2007)
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    A thunderstorm which developed in North-Eastern region of Spain on 16th June, 2006 is analyzed. This thunderstorm could be severe because it produced hailstones larger than 19 mm. The cell life time was 3h 30 minutes. ...
  • Temporal and spatial evolution of intracloud lightning associated ith sprite-producing positive cloud-to-ground flashes in Northeastern Spain 

    Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Soula, Serge; Pineda Ruegg, Nicolau; Chanrion, Olivier (2009)
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  • Total lightning activity and electrostatic field in a hail-bearing thunderstorm in Catalonia 

    Montañá Puig, Juan; Pineda Ruegg, Nicolau; Soula, Serge; March Nomen, Víctor (2006)
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    This paper presents the analysis of a hailstorm episode occurred in the city of Terrassa (Barcelona) Spain on the 10th July of 2005 (Figure 1.a)
  • Total lightning analysis of a tornadic severe weather event 

    Pineda Ruegg, Nicolau; Bech, Joan; Rigo, Tomeu; Montañá Puig, Juan; Van der Velde, Oscar Arnoud (2009)
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    This study presents an analysis of total lightning and radar data of a severe weather event that took place in the early morning of 2nd November 2008 in Catalonia (NE Spain). A general overview of the synoptic framework ...
  • Total lightning detections of lightning flashes recorded by means of high-speed videos 

    Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Romero Durán, David; March Nomen, Víctor; Solà de Las Fuentes, Gloria; Pineda Ruegg, Nicolau (2011)
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    A detailed analysis of two lightning flashes is presented. High speed video, total lightning detections and electric field measurements are the basis of the study. In general, the observed negative cloud-to-ground ...
  • Total lightning in a TLE-bearing Winter thunderstorm over the Western Mediterranean 

    Pineda Ruegg, Nicolau; Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Soula, Serge (2008)
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    In this paper we present the analysis of one specific thunderstorm, which occurred during the night of 17th to 18th December 2007 in the western Mediterranean Sea, in the coastal area of Catalonia (NE Spain) (Fig.1).
  • Total lightning observations to wind turbines 

    Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Romero Durán, David; March Nomen, Víctor; Solà de Las Fuentes, Gloria; Pineda Ruegg, Nicolau; Hermoso Alameda, Blas; Senosiáin Miquélez, Vicente (2012)
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    In summer 2011 a new VHF Lightning Mapping Array was installed at the northeast of Spain. In that area a VHF interferometer and a VLFILF lightning detection networks are also operative. The close presence of wind farms in ...
  • Total lightning, electrostatic field and meteorological radar applied to lightning hazard warning 

    Montañá Puig, Juan; Aranguren Fino, Daniel; Pineda Ruegg, Nicolau; Solà de Las Fuentes, Gloria; Romero Durán, David; March Nomen, Víctor (2008)
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    This paper presents the analysis of various combinations of data sets with the purpose of evaluation of lightning warning methods. The data sets include CG flashes, IC sources, radar reflectivity and, for some specific ...
  • Two upward lightning at the Eagle Nest tower 

    Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Romero Durán, David; March Nomen, Víctor; Solà de Las Fuentes, Gloria; Pineda Ruegg, Nicolau; Soula, Serge; Hermoso Alameda, Blas (Institute of Electrical and Electronics Engineers (IEEE), 2012)
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    A new instrument composed by a high speed camera, two high energy detectors, a E-field antenna and a VHF antenna were installed at the Eagle Nest tower (northeast of Spain) during summer 2011. With this equipment several ...
  • Two-years (2004-2005) of Safir evaluation in Catalonia 

    Montañá Puig, Juan; Pineda Ruegg, Nicolau; March Nomen, Víctor; Illa Arnau, Àngel; Romero Durán, David; Solà de Las Fuentes, Gloria (2006)
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