Articles de revista: Enviaments recents

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    • High production of gigantic jets by a thunderstorm over Indian Ocean 

      Soula, Serge; Mlynarczyk, Janusz; Van der Velde, Oscar Arnoud; Montanya Puig, Joan; Leclerc, Emmanuel (John Wiley & sons, 2023-11-16)
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      Thirteen gigantic jets (GJ) were observed on 12 February 2020, with a sensitive video camera located at Maïdo Observatory, La Réunion Island in Indian Ocean. They were produced within 68 min by nearby cells embedded in a ...

    • Análisis de estructuras de carga de dos tormentas eléctricas registradas por lared Lightning Mapping Array en el Magdalena Medio colombiano 

      Ardila Murillo, Brandon Steven; Soto Ríos, Edison Andrés; Argüello Barbosa, Didier; Tello Rodríguez, Heribert; López Trujillo, Jesús Alberto; Montañá Puig, Juan (2022-05-01)
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      A partir de la ubicación de la red Lightning Mapping Array LMA en límites de los municipios de Barrancabermeja y Yondó en 2018, se han tomado datos ininterrumpidos de descargas IC y CG que ocurren sobre esta zona de estudio. ...

    • Spectroscopy of a mesospheric ghost reveals iron emissions 

      Passas, Maria; Van der Velde, Oscar Arnoud; Gordillo Vázquez, Francisco; Gómez-Martín, Juan Carlos; Sánchez, Justo; Pérez Invernón, Francisco José; Sánchez-Ramírez, Rubén; García Comas, Maia; Montañá Puig, Juan (2023-12-12)
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      Mesospheric Green emissions from excited Oxygen in Sprite Tops (ghosts) are infrequent and faint greenish transient luminous events that remain for hundreds of milliseconds on top of certain energetic sprites. The main ...

    • Lightning-produced nitrogen oxides per flash length obtained by using TROPOMI observations and the Ebro lightning mapping array 

      Pérez Invernón, Francisco José; Gordillo Vázquez, Francisco; Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Pineda Rüegg, Nicolau; López Trujillo, Jesús Alberto; Huntrieser, Heidi; Valks, Pieter; Loyola, Diego; Sero, Sora; Erbertseder, Thilo (2023-12-28)
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      Lightning is one of the main sources of NOx in the Earth's atmosphere. However, there is a large variability in NOx production during the lifetime of thunderstorms. In this study, we used the TROPOspheric Monitoring ...

    • Impact of electrical engineering didactic videos during emergency remote learning 

      Lijo, Ruben; Quevedo, Eduardo; Castro, Jose Juan; Horta Bernús, Ricard (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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      This article demonstrates that didactic videos have the potential to enhance quality perception, performance and interest in engineering education. Emergency Remote Learning (ERL) imposed challenging conditions on education, ...

    • Upward propagation of gigantic jets revealed by 3D radio and optical mapping 

      Boggs, Levi D.; Mach, Doug; Bruning, Eric; Liu, Ningyu; Van der Velde, Oscar Arnoud; Montanya Puig, Joan; Cummer, Steven A.; Palivec, Kevin; Chmielewski, Vanna; MacGorman, Donald R.; Peterson, Michael J. (2022-08-05)
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      Occasionally, lightning will exit the top of a thunderstorm and connect to the lower edge of space, forming a gigantic jet. Here, we report on observations of a negative gigantic jet that transferred an extraordinary amount ...

    • Estudio de la accidentabilidad de la minería española en el período 2010-2019 

      Sanmiquel Pera, Lluís; Bascompta Massanes, Marc; Freijo Álvarez, Modesto; Vintró Sánchez, Carla; Felipe Blanch, José Juan de (2022-10-26)
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    • 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)
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      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 ...

    • 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)
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      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, ...

    • New WMO certified megaflash lightning extremes for flash distance (768 km) and duration (17.01 seconds) recorded from space 

      Peterson, Michael J.; Lang, Timothy J.; Logan, Timothy; Wee Kiong, Cheong; Gijben, Morne; Holle, Ronald L.; Kolmasova, Ivana; Marisaldi, Martino; Montañá Puig, Juan; Pawar, Suwil D.; Zhang, Daile; Brunet, Manola; Cerveny, Randall S. (American Meteorological Society, 2022-02-01)
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      Initial global extremes in lightning duration and horizontal distance were established in 2017 (Lang et al. 2017) by an international panel of atmospheric lightning scientists and engineers assembled by the WMO. The ...

    • 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)
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      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 ...

    • Tropical TGF paradox: a perspective from TRMM precipitation radar 

      Morales Rodríguez, Carlos Augusto; Montanya Puig, Joan; Van der Velde, Oscar Arnoud; Fabró Tàpia, Ferran; López Trujillo, Jesús Alberto (2021-07-27)
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      The Terrestrial Gamma-ray Flash (TGF) to lightning ratio, computed over the three tropical chimneys, presents a paradox: African thunderstorms produce the most lightning but yield the lowest fraction of TGFs when compared ...