Browsing by Author "López Trujillo, Jesús Alberto"Més informació

Now showing items 1-20 of 21

    • 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 ...

    • 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 ...

    • Charge structure of two tropical thunderstorms in Colombia 

      López Trujillo, Jesús Alberto; Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Pineda Rüegg, Nicolau; Salvador Yuste, Albert; Romero Durán, David; Aranguren Fino, Harby Daniel; Taborda, John (2019-04-23)
      Article
      Open Access
      Charge structure derived from lightning leader development of tropical thunderstorms comprising equatorial latitudes of < ±10° has not been investigated yet. In this work, using a Lightning Mapping Array (LMA) installed ...

    • 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) ...

    • Evolution of gigantic jets at high temporal and spatial resolution 

      Van der Velde, Oscar Arnoud; Montanya, Joan; López Trujillo, Jesús Alberto (2018)
      Conference lecture
      Open Access
      Gigantic Jets (GJ) are lightning discharges between the cloud and the lower ionosphere, which manifest as leaders at low altitude and transition to streamers as they rise in altitude. The evolution has never been imaged ...

    • Fair weather induced charges and currents on tall wind turbines and experiments with kites 

      López Trujillo, Jesús Alberto; Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Fabró Tàpia, Ferran; Romero Durán, David (Zakon Group, 2016)
      Conference report
      Open Access
      Earth’s atmospheric potential rapidly increases up to few tens of kilovolts below 200 m altitude. This potential drop will induce charge to tall objects at ground by virtue of electrostatic induction. In this work we ...

    • First data of the Colombia Lightning Mapping Array - COLMA 

      López Trujillo, Jesús Alberto; Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Romero Durán, David; Aranguren Fino, Harby Daniel; Torres Sanchez, Horacio; Taborda, John; Martínez, Joaquin (Zakon Group, 2016)
      Conference report
      Open Access
      The first data set of VHF lightning mapping using a Lightning Mapping Array system - LMA in a tropical region is presented in this paper. Six sensors were installed at the north of Colombia near Santa Marta city. Since ...

    • Gigantic jet discharges evolve stepwise through the middle atmosphere 

      Van der Velde, Oscar Arnoud; Montanya, Joan; López Trujillo, Jesús Alberto; Cummer, Steven A. (2019-09-25)
      Article
      Open Access
      In 2002 it was discovered that a lightning discharge can rise out of the top of tropical thunderstorms and branch out spectacularly to the base of the ionosphere at 90¿km altitude. Several dozens of such gigantic jets have ...

    • High altitude leaders mapped by the Colombia lightning mapping array 

      Montañá Puig, Juan; López Trujillo, Jesús Alberto; Van der Velde, Oscar Arnoud; Romero Durán, David; Fabró Tàpia, Ferran (2016)
      Conference report
      Open Access
      On April 2015 a Lightning Mapping Array network (COL-LMA) was installed at the north of Colombia. This network provides 3D mapping of the development of lightning leaders. For the first time such network has been setup in ...

    • 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 ...

    • Initiation of lightning flashes simultaneously observed from space and the ground: Narrow bipolar events 

      López Trujillo, Jesús Alberto; Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Romero Durán, David; Gordillo Vázquez, Francisco; Pérez Invernón, Francisco José; Luque Estepa, Alejandro; Morales Rodríguez, Carlos Augusto; Neubert, Torsten; Rison, William; Krehbiel, P.; Navarro González, Javier; Østgaard, Nikolai; Reglero, Víctor (2022-04-15)
      Article
      Open Access
      We investigate the initiation of four lightning flashes detected from ground by means of the Colombia Lightning Mapping Array (Colombia-LMA) and simultaneously observed from space by the optical sensors of the Atmosphere-Space ...

    • Investigación de las estructuras eléctricas y líderes de rayos en tormentas : aportaciones a las condiciones de inicio de rayos gamma terrestres 

      López Trujillo, Jesús Alberto (Universitat Politècnica de Catalunya, 2019-06-21)
      Doctoral thesis
      Open Access
      This thesis presents a characterization of the charge structures of thunderstorms and lightning leader development, and their relationship with the emissions of terrestrial gamma ray flashes (TGFs). The results include a ...

    • Measurement of electric potential of isolated vertical conductive wires pulled by a drone under fair weather conditions 

      Montañá Puig, Juan; March Nomen, Víctor; Van der Velde, Oscar Arnoud; López Trujillo, Jesús Alberto; Romero Durán, David; Fontanes Molina, Pol; Urbani, Michele (2018)
      Conference lecture
      Restricted access - publisher's policy
      The popularization of multicopter drones opens new possibilities for investigations of the atmospheric potential. The method of directly measuring of the electric potential drop of the lower part of the atmosphere has been ...

    • Meteorological factors in the production of gigantic jets by tropical thunderstorms in Colombia 

      Van der Velde, Oscar Arnoud; Montanya Puig, Joan; López Trujillo, Jesús Alberto (2022-10-15)
      Article
      Open Access
      Gigantic jets are electric discharges that on rare occasions can be seen at night shooting out of the top of tropical thunderclouds, reaching the ionosphere (90 km). Using sensitive camera systems and detection software, ...

    • Multi-stroke positive cloud-to-ground lightning sharing the same channel observed with a VHF broadband interferometer 

      Urbani, Michele; Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Sousa Arcanjo, Marcelo Augusto; López Trujillo, Jesús Alberto (2022-04-15)
      Article
      Open Access
      In the same lightning flash, whose usual duration is less than a second, there can be multiple negative cloud-to-ground strokes with different terminations or following a preexisting channel to the ground. In contrast, it ...

    • Natural observatories for lightning research in Colombia 

      Aranguren Fino, Harby Daniel; López Trujillo, Jesús Alberto; Montañá Puig, Juan; Torres Sanchez, Horacio (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Open Access
      This paper presents a selected, not exhaustive, description of lightning research in Colombia over time, based on natural observatories for experimentation and measurement; and introduces the DABEIBA Lightning Research ...

    • Potential use of space-based lightning detection in electric power systems 

      Montañá Puig, Juan; López Trujillo, Jesús Alberto; Van der Velde, Oscar Arnoud; Solà de las Fuentes, Glòria; Romero Durán, David; Morales Rodríguez, Carlos Augusto; Visacro, Silverio; Saba, Manuel; Goodman, Steven J.; Williams, Earle R.; Peterson, Michael J.; Pineda, Nicolau; Sousa Arcanjo, Marcelo Augusto; Aranguren Fino, Daniel (2022-12)
      Article
      Open Access
      Information about lightning activity and its parameters is necessary to design and evaluate the lightning protection of an electrical power system. This information can be obtained from ground-based lightning detection ...

    • Small scale simulation of lightning using vertical wires deployed by drones: on the land and sea peak current asymetry 

      Montañá Puig, Juan; Fontanes Molina, Pol; Arcanjo, Marcelo; Urbani, Michele; Williams, Earle Rolfe; Romero Durán, David; Horta Bernús, Ricard; López Trujillo, Jesús Alberto; Van der Velde, Oscar Arnoud; Pineda Rüegg, Nicolau (2022)
      Conference report
      Restricted access - publisher's policy
      In this work we simulate lightning by means of vertical wires deployed by a multirotor drone under fair weather conditions. These wires, when isolated from ground, acquire an electric potential by virtue of electrostatic ...

    • Spatio-temporal dimension of lightning flashes based on three-dimensional Lightning Mapping Array 

      López Trujillo, Jesús Alberto; Pineda Rüegg, Nicolau; Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Fabró Tàpia, Ferran; Romero Durán, David (2017-10-15)
      Article
      Open Access
      3D mapping system like the LMA - Lightning Mapping Array - are a leap forward in lightning observation. LMA measurements has lead to an improvement on the analysis of the fine structure of lightning, allowing to characterize ...

    • Thunderstorm characteristics favouring downward and upward lightning to wind turbines 

      Pineda, Nicolau; Montañá Puig, Juan; Salvador Yuste, Albert; Van der Velde, Oscar Arnoud; López Trujillo, Jesús Alberto (2018-12-01)
      Article
      Open Access
      Meteorological conditions and thunderstorm characteristics related to lightning threats to wind turbines are discussed in this paper. Due to the rotating blades, wind turbines may be regarded peculiar tall objects, more ...