Dancing sprites: detailed analysis of two case studies

Serge Soula, Janusz Mlynarczyk, Martin Füllekrug, Nicolau Pineda, Jean François Georgis, Oscar van der Velde, Joan Montanyà, Ferran Fabró

Research output: Contribution to journalArticle

Abstract

On 29-30 October 2013, a low-light video camera installed at Pic du Midi (2877m), recorded transient luminous events above a very active storm over the Mediterranean Sea. The minimum cloud top temperature reached -73°C, while its cloud to ground (CG) flash rate exceeded 30flmin-1. Some sprite events have long duration and resemble to dancing sprites. We analyze in detail the temporal evolution and estimated location of two series of sprite sequences, as well as the cloud structure, the lightning activity, the electric field radiated in a broad range of low frequencies, and the current moment waveform of the lightning strokes. (i) In each series, successive sprite sequences reflect time and location of corresponding positive lightning strokes across the stratiform region. (ii) The longer time-delayed (>20ms) sprite elements correspond to the lower impulsive charge moment changes (iCMC) of the parent strokes (<200 C km), and they are shifted few tens of kilometers from their SP + CG stroke. However, both short and long time-delayed sprite elements also occur after strokes that produce a large iCMC and that are followed by a continuing current. (iii) The long time-delayed sprite elements during the continuing current correspond to surges in the current moment waveform. They occur sometimes at an altitude apparently lower than the previous short time-delayed sprite elements, possibly because of changes in the local conductivity. (iv) The largest and brightest sprite elements produce significant current signatures, visible when their delay is not too short (~3–5 ms).

LanguageEnglish
Pages3173–3192
JournalJournal of Geophysical Research : Atmospheres
Volume122
Issue number6
DOIs
StatusPublished - 16 Mar 2017

Fingerprint

sprite
lightning
analysis
temporal evolution
electric field
conductivity

Keywords

  • Current waveform
  • Dancing sprite
  • Ionosphere
  • Lightning
  • Sprite
  • Stratiform region

Cite this

Soula, S., Mlynarczyk, J., Füllekrug, M., Pineda, N., Georgis, J. F., van der Velde, O., ... Fabró, F. (2017). Dancing sprites: detailed analysis of two case studies. DOI: 10.1002/2016JD025548

Dancing sprites : detailed analysis of two case studies. / Soula, Serge; Mlynarczyk, Janusz; Füllekrug, Martin; Pineda, Nicolau; Georgis, Jean François; van der Velde, Oscar; Montanyà, Joan; Fabró, Ferran.

In: Journal of Geophysical Research : Atmospheres, Vol. 122, No. 6, 16.03.2017, p. 3173–3192 .

Research output: Contribution to journalArticle

Soula, S, Mlynarczyk, J, Füllekrug, M, Pineda, N, Georgis, JF, van der Velde, O, Montanyà, J & Fabró, F 2017, 'Dancing sprites: detailed analysis of two case studies' Journal of Geophysical Research : Atmospheres, vol. 122, no. 6, pp. 3173–3192 . DOI: 10.1002/2016JD025548
Soula S, Mlynarczyk J, Füllekrug M, Pineda N, Georgis JF, van der Velde O et al. Dancing sprites: detailed analysis of two case studies. Journal of Geophysical Research : Atmospheres. 2017 Mar 16;122(6):3173–3192 . Available from, DOI: 10.1002/2016JD025548
Soula, Serge ; Mlynarczyk, Janusz ; Füllekrug, Martin ; Pineda, Nicolau ; Georgis, Jean François ; van der Velde, Oscar ; Montanyà, Joan ; Fabró, Ferran. / Dancing sprites : detailed analysis of two case studies. In: Journal of Geophysical Research : Atmospheres. 2017 ; Vol. 122, No. 6. pp. 3173–3192
@article{800139d357ee41719ea12f13331dbeaa,
title = "Dancing sprites: detailed analysis of two case studies",
abstract = "On 29-30 October 2013, a low-light video camera installed at Pic du Midi (2877m), recorded transient luminous events above a very active storm over the Mediterranean Sea. The minimum cloud top temperature reached -73°C, while its cloud to ground (CG) flash rate exceeded 30flmin-1. Some sprite events have long duration and resemble to dancing sprites. We analyze in detail the temporal evolution and estimated location of two series of sprite sequences, as well as the cloud structure, the lightning activity, the electric field radiated in a broad range of low frequencies, and the current moment waveform of the lightning strokes. (i) In each series, successive sprite sequences reflect time and location of corresponding positive lightning strokes across the stratiform region. (ii) The longer time-delayed (>20ms) sprite elements correspond to the lower impulsive charge moment changes (iCMC) of the parent strokes (<200 C km), and they are shifted few tens of kilometers from their SP + CG stroke. However, both short and long time-delayed sprite elements also occur after strokes that produce a large iCMC and that are followed by a continuing current. (iii) The long time-delayed sprite elements during the continuing current correspond to surges in the current moment waveform. They occur sometimes at an altitude apparently lower than the previous short time-delayed sprite elements, possibly because of changes in the local conductivity. (iv) The largest and brightest sprite elements produce significant current signatures, visible when their delay is not too short (~3–5 ms).",
keywords = "Current waveform, Dancing sprite, Ionosphere, Lightning, Sprite, Stratiform region",
author = "Serge Soula and Janusz Mlynarczyk and Martin F{\"u}llekrug and Nicolau Pineda and Georgis, {Jean Fran{\cc}ois} and {van der Velde}, Oscar and Joan Montany{\`a} and Ferran Fabr{\'o}",
year = "2017",
month = "3",
day = "16",
doi = "10.1002/2016JD025548",
language = "English",
volume = "122",
pages = "3173–3192",
journal = "Journal of Geophysical Research : Atmospheres",
issn = "2169-897X",
number = "6",

}

TY - JOUR

T1 - Dancing sprites

T2 - Journal of Geophysical Research : Atmospheres

AU - Soula,Serge

AU - Mlynarczyk,Janusz

AU - Füllekrug,Martin

AU - Pineda,Nicolau

AU - Georgis,Jean François

AU - van der Velde,Oscar

AU - Montanyà,Joan

AU - Fabró,Ferran

PY - 2017/3/16

Y1 - 2017/3/16

N2 - On 29-30 October 2013, a low-light video camera installed at Pic du Midi (2877m), recorded transient luminous events above a very active storm over the Mediterranean Sea. The minimum cloud top temperature reached -73°C, while its cloud to ground (CG) flash rate exceeded 30flmin-1. Some sprite events have long duration and resemble to dancing sprites. We analyze in detail the temporal evolution and estimated location of two series of sprite sequences, as well as the cloud structure, the lightning activity, the electric field radiated in a broad range of low frequencies, and the current moment waveform of the lightning strokes. (i) In each series, successive sprite sequences reflect time and location of corresponding positive lightning strokes across the stratiform region. (ii) The longer time-delayed (>20ms) sprite elements correspond to the lower impulsive charge moment changes (iCMC) of the parent strokes (<200 C km), and they are shifted few tens of kilometers from their SP + CG stroke. However, both short and long time-delayed sprite elements also occur after strokes that produce a large iCMC and that are followed by a continuing current. (iii) The long time-delayed sprite elements during the continuing current correspond to surges in the current moment waveform. They occur sometimes at an altitude apparently lower than the previous short time-delayed sprite elements, possibly because of changes in the local conductivity. (iv) The largest and brightest sprite elements produce significant current signatures, visible when their delay is not too short (~3–5 ms).

AB - On 29-30 October 2013, a low-light video camera installed at Pic du Midi (2877m), recorded transient luminous events above a very active storm over the Mediterranean Sea. The minimum cloud top temperature reached -73°C, while its cloud to ground (CG) flash rate exceeded 30flmin-1. Some sprite events have long duration and resemble to dancing sprites. We analyze in detail the temporal evolution and estimated location of two series of sprite sequences, as well as the cloud structure, the lightning activity, the electric field radiated in a broad range of low frequencies, and the current moment waveform of the lightning strokes. (i) In each series, successive sprite sequences reflect time and location of corresponding positive lightning strokes across the stratiform region. (ii) The longer time-delayed (>20ms) sprite elements correspond to the lower impulsive charge moment changes (iCMC) of the parent strokes (<200 C km), and they are shifted few tens of kilometers from their SP + CG stroke. However, both short and long time-delayed sprite elements also occur after strokes that produce a large iCMC and that are followed by a continuing current. (iii) The long time-delayed sprite elements during the continuing current correspond to surges in the current moment waveform. They occur sometimes at an altitude apparently lower than the previous short time-delayed sprite elements, possibly because of changes in the local conductivity. (iv) The largest and brightest sprite elements produce significant current signatures, visible when their delay is not too short (~3–5 ms).

KW - Current waveform

KW - Dancing sprite

KW - Ionosphere

KW - Lightning

KW - Sprite

KW - Stratiform region

UR - http://www.scopus.com/inward/record.url?scp=85015409063&partnerID=8YFLogxK

UR - http://dx.doi.org/10.1002/2016JD025548

U2 - 10.1002/2016JD025548

DO - 10.1002/2016JD025548

M3 - Article

VL - 122

SP - 3173

EP - 3192

JO - Journal of Geophysical Research : Atmospheres

JF - Journal of Geophysical Research : Atmospheres

SN - 2169-897X

IS - 6

ER -