Zobrazeno 1 - 10
of 160
pro vyhledávání: '"A. Malagón-Romero"'
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 3577-3592 (2024)
Mesospheric electrical discharges, known as sprites and formed by fast-propagating streamers, have been shown to create localized enhancements of atmospheric constituents such as N, O, NOx, N2O, and HOx, as indicated by both modelling results and spa
Externí odkaz:
https://doaj.org/article/698c6d95a8c246dc8292952e2d0df463
Autor:
A. Malagón‐Romero, A. Luque, Nicholas S. Shuman, Thomas M. Miller, Shaun G. Ard, Albert A. Viggiano
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 11, Pp n/a-n/a (2024)
Abstract The balance of processes affecting electron density drives the dynamics of upper‐atmospheric electrical events, such as sprites. We examine the detachment of electrons from negatively charged atomic oxygen (O−) via collisions with neutra
Externí odkaz:
https://doaj.org/article/7452a729459c4cf5915ac2ffe022defc
We study how the choice of input data affects simulations of positive streamers in humid air, focusing on H2O cross sections, photoionization models, and chemistry sets. Simulations are performed in air with a mole fraction of 0%, 3% or 10% H2O using
Externí odkaz:
http://arxiv.org/abs/2412.03861
Autor:
A. Luque, F. J. Gordillo-Vázquez, D. Li, A. Malagón-Romero, F. J. Pérez-Invernón, A. Schmalzried, S. Soler, O. Chanrion, M. Heumesser, T. Neubert, V. Reglero, N. Østgaard
Publikováno v:
Geoscientific Model Development, Vol 13, Pp 5549-5566 (2020)
We describe a computer code that simulates how a satellite observes optical radiation emitted by a lightning flash after it is scattered within an intervening cloud. Our code, CloudScat.jl, is flexible, fully open source and specifically tailored to
Externí odkaz:
https://doaj.org/article/2ea4b6ef16604ab3b80e8d6f42de9a64
Autor:
Malla, Hemaditya, Hare, Brian M., Cummer, Steven, Guo, Yihao, Malagón-Romero, Alejandro, Nijdam, Sander, Ebert, Ute, Teunissen, Jannis
We study radio emissions from positive streamers in air using 3D simulations, from which the radiated electric field is computed by solving Jefimenko's equations. The simulations are performed at 0.5 bar using two photoionization methods: the Helmhol
Externí odkaz:
http://arxiv.org/abs/2404.09772
Autor:
Malagón-Romero, A., Luque, A.
Publikováno v:
Plasma Sources Science and Technology, 2022, vol. 31, no 10, p. 105010
We investigate the effect of humidity on the propagation of streamers in air. We present a minimal set of chemical reactions that takes into account the presence of water in a nonthermal air plasma and considers ionization, attachment, detachment, re
Externí odkaz:
http://arxiv.org/abs/2304.05160
Autor:
Malagón-Romero, A., Teunissen, J., Stenbaek-Nielsen, H. C., McHarg, M. G., Ebert, U., Luque, A.
We investigate the launch of negative upward streamers from sprite glows. This phenomenon is readily observed in high-speed observations of sprites and underlies the classification of sprites into carrot or column types. First, we describe how an att
Externí odkaz:
http://arxiv.org/abs/2001.06248
Publikováno v:
Journal of Geophysical Research: Atmospheres, 124 (2019)
The spatial non-uniformity of the electric field in air discharges, such as streamers, can influence the accuracy of spectroscopic diagnostic methods and hence the estimation of the peak electric field. In this work, we use a self-consistent streamer
Externí odkaz:
http://arxiv.org/abs/1910.06012
Publikováno v:
Geophysical Research Letters, 46 (2019)
We investigate the emergence of space stems ahead of negative leaders. These are luminous spots that appear ahead of an advancing leader mediating the leader's stepped propagation. We show that space stems start as regions of locally depleted conduct
Externí odkaz:
http://arxiv.org/abs/1909.04424
Autor:
Malagón-Romero, Dionisio1 (AUTHOR) dionisiomalagon@usta.edu.co, Torres-Velasquez, Andres C.1 (AUTHOR), Tinoco-Navarro, Lizeth K.2 (AUTHOR), Arrubla-Vélez, Juan P.3 (AUTHOR)
Publikováno v:
International Journal of Sustainable Energy. December 2023, Vol. 42 Issue 1, p811-829. 19p.