Analysis of lightning activity in two thunderstorm systems producing sprites in France |
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| Authors: | Aglika Savtchenko Rumjana Mitzeva Boryana Tsenova Staytcho Kolev |
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| Institution: | 1. Department of Meteorology and Geophysics, Faculty of Physics, Sofia University, Sofia 1164, Bulgaria;2. National Institute of Meteorology and Hydrology, Sofia, Bulgaria;1. Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China;2. State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, 100081, China;3. State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China;4. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing, Jiangsu, 210044, China;5. Electrical and Computer Engineering Department, Duke University, Durham, NC, 27606, United States;6. Chengdu University of Information and Technology, Institute of Electronic Engineering, Chengdu, Sichuan 610225, China;1. D.V. Skobeltsyn Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, 1(2), Leninskie Gory, Moscow 119991, Russia;2. Faculty of Physics, M.V. Lomonosov Moscow State University, 1(2), Leninskie Gory, Moscow 119991, Russia;3. Dipartimento di Elettronica e Telecomunicazioni, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy;4. Istituto Nazionale di Fisica Nucleare, sez. di Torino, via P. Giuria, 1, 10125 Torino, Italy;5. Department of Physics, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden;6. The Oskar Klein Centre for Cosmoparticle Physics, SE-106 91 Stockholm, Sweden;1. IRSN/PRP-ENV/STEME/LMRE, Orsay, France;2. CEREGE, Unité Mixte 34 (AMU/CNRS/IRD), Aix-en-Provence, France;3. IRSN/PRP-ENV/SESURE/LEREN, Saint-Paul-lez-Durance, France;4. IRSN/PRP-ENV/SESURE/LRTE, Saint-Paul-lez-Durance, France |
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| Abstract: | Two sprite-producing mesoscale convective systems above the South-Western part of France are studied. Three sprite events during the first night and seven during the second night were captured. Except for two events, the sprites could be associated with causative positive cloud-to-ground (+CG) discharges in the stratiform region of the storm. The analysis of lightning activity reveals that in both nights sprites occurred when lightning activity decreased rapidly and the ratio of +CGs to the total number of CGs decreased slightly. The average peak current of sprite-producing lightning was lower than 60 kA, in agreement with other observations. The delay times of sprites to their SPCGs varied from 57 to 140 m s and no correlation between events’ delay and shape was established. |
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