Now showing items 1-12 of 49

    • Optical signatures associated with streamers and leaders of laboratory discharges 

      Sousa Arcanjo, Marcelo Augusto; Montañá Puig, Juan; Urbani, Michele; Lorenzo, Victor (2021-10-28)
      Article
      Open Access
      This work investigates the strongest optical emissions associated with long laboratory sparks (at the wavelengths of 337 nm and 777 nm) with the aim to understand similar emissions in lightning. The processes of the ...
    • A simultaneous observation of lightning by ASIM, Colombia-Lightning Mapping Array, GLM, and ISS-LIS 

      Montañá Puig, Juan; López Trujillo, Jesús Alberto; Morales Rodríguez, Carlos Augusto; Van der Velde, Oscar Arnoud; Fabró Tàpia, Ferran; Pineda, Nicolau; Navarro González, Javier; Reglero, Víctor; Neubert, Torsten; Chanrion, Olivier; Goodman, Steven J.; Østgaard, Nikolai; Ladino Rincón, Alfonso; Romero Durán, David; Solà de las Fuentes, Glòria; Horta Bernús, Ricard; Freijo Álvarez, Modesto (2021-02-17)
      Article
      Open Access
      The Atmosphere-Space Interactions Monitor (ASIM) on the International Space Station (ISS) provides optical radiances and images of lightning flashes in several spectral bands. This work presents a lightning flash simultaneously ...
    • Thunderstorm charge structures favouring cloud-to-ground lightning 

      Salvador Yuste, Albert; Pineda Rüegg, Nicolau; Montañá Puig, Juan; Solà de las Fuentes, Glòria (2021-08)
      Article
      Restricted access - publisher's policy
      Thunderstorm electrical structures favouring cloud-to-ground lightning were investigated through a Lightning Mapping Array (LMA), an accurate three-dimensional lightning location system that allows inferring the heights ...
    • High-energy radiation from natural lightning observed in coincidence with a VHF broadband interferometer 

      Urbani, Michele; Montañá Puig, Juan; Van der Velde, Oscar Arnoud; López Trujillo, Jesús Alberto; Sousa Arcanjo, Marcelo Augusto; Fontanes Molina, Pol; Romero Durán, David; Roncancio Guzmán, José Andrés (2021-04-16)
      Article
      Open Access
      This work presents the first simultaneous X-ray measurements from natural lightning in coincidence with a very high frequency (VHF) broadband interferometer. During an observational campaign in north-central Colombia, five ...
    • Comparison of high-speed optical observations of a lightning flash from space and the ground 

      Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Neubert, Torsten; Chanrion, Olivier; Ostgaard, N.; López Trujillo, Jesús Alberto; Fabró Tàpia, Ferran; Reglero Velasco, Victor (2020-10)
      Article
      Open Access
      We analyze a nighttime negative cloud-to-ground lightning flash in Colombia observed from the ground with a high-speed camera at 5,000 images per second and from space by the Atmosphere-Space Interactions Monitor (ASIM) ...
    • Seasonal variations on the conditions required for the lightning production 

      Salvador Yuste, Albert; Pineda Rüegg, Nicolau; Montañá Puig, Juan; Solà de las Fuentes, Glòria (2020-10-01)
      Article
      Restricted access - publisher's policy
      Given the growing concern on lightning threats outside the main warm-season, the objective of this study is to get further insight on the seasonal variations of the necessary conditions required for the production of ...
    • Evaluación de riesgos ocupacionales de los trabajadores de la minería española (2018) 

      Freijo Álvarez, Modesto; Sanmiquel Pera, Lluís; Montañá Puig, Juan; Romero Durán, David; Bergas Jané, Joan Gabriel (2020-10-01)
      Article
      Open Access
      El sector minero español puede clasificarse en dos tipos, minería energética y no energética. La actividad minera implica riesgos para la salud y seguridad en el trabajo.En este estudio se ha evaluado los ...
    • Climatology of transient luminous events and lightning observed above Europe and the Mediterranean Sea 

      Arnone, E.; Bór, József; Chanrion, Olivier; Van der Velde, Oscar Arnoud (2019-11-04)
      Article
      Open Access
      In 1999, the first sprites were observed above European thunderstorms using sensitive cameras. Since then, Eurosprite campaigns have been conducted to observe sprites and other transient luminous events (TLEs), expanding ...
    • 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.; Montañá Puig, Juan; 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 ...
    • Wakefield acceleration in planetary atmospheres: a possible source of MeV electrons : the collisionless case 

      Arrayas Chazeta, Manuel; Cubero Gómez, David; Montañá Puig, Juan; Seviour, Rebecca; Trueba Santander, Jose Luis (2018-07-01)
      Article
      Open Access
      Intense electromagnetic pulses interacting with a plasma can create a wake of plasma oscillations. Electrons trapped in such oscillations can be accelerated under certain conditions to very high energies. We study the ...
    • Meteorological aspects of self-initiated upward lightning at the Säntis Tower (Switzerland) 

      Pineda, Nicolau; Figueras i Ventura, Jordi; Romero Durán, David; Mostajabi, A.; Azadifar, M.; Sunjerga, A.; Rachidi-Haeri, Farhad; Rubinstein, M.; Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Altube Vázquez, Patricia; Besic, Nikola; Grazioli, Jacopo; Germann, Urs; Williams, Earle R. (2019-12-26)
      Article
      Open Access
      Interest in exploring the meteorological conditions favoring upward lightning from tall man-made structures has grown in recent years, largely due to the worldwide expansion of wind energy. To this end, instrumented towers ...
    • LMA observations of upward lightning flashes at the Säntis Tower initiated by nearby lightning activity 

      Sunjerga, A.; Rubinstein, M.; Pineda, Nicolau; Mostajabi, A.; Azadifar, M.; Romero Durán, David; Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Figueras i Ventura, Jordi; Besic, Nikola; Grazioli, Jacopo; Hering, Alessandro; Germann, Urs; Diendorfer, Gerhard; Rachidi-Haeri, Farhad (2020-04)
      Article
      Restricted access - publisher's policy
      We present in this paper lightning current measurements, LMA (Lightning Mapping Array) data and fast antenna electric fields associated with upward flashes observed at the Säntis Tower during summer of 2017. The LMA network ...