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dc.contributor.authorSoula, Serge
dc.contributor.authorMlynarczyk, Janusz
dc.contributor.authorFullekrug, Martin
dc.contributor.authorPineda Rüegg, Nicolau
dc.contributor.authorGeorgis, Jean-Francois
dc.contributor.authorVan der Velde, Oscar Arnoud
dc.contributor.authorMontañá Puig, Juan
dc.contributor.authorFabró Tàpia, Ferran
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica
dc.date.accessioned2017-12-01T09:58:43Z
dc.date.available2017-12-01T09:58:43Z
dc.date.issued2017-03-27
dc.identifier.citationSoula, S., Mlynarczyk, J., Fullekrug, M., Pineda, N., Georgis, J.-F., Van Der Velde, O., Montaña, J., Fabro, F. Dancing sprites: detailed analysis of two case studies. "Journal of geophysical research: atmospheres", 27 Març 2017, vol. 122, núm. 6, p. 3173-3192.
dc.identifier.issn2169-8996
dc.identifier.urihttp://hdl.handle.net/2117/111417
dc.description.abstractOn 29–30 October 2013, a low-light video camera installed at Pic du Midi (2877¿m), 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 30¿fl¿min-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 (>20¿ms) 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).
dc.format.extent20 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria elèctrica
dc.subject.lcshMeteorology
dc.subject.lcshElectrical engineering
dc.subject.otherLightning
dc.subject.otherSprites
dc.subject.otherTLE
dc.subject.otherThunderstorms
dc.subject.otherMeteorological radar
dc.subject.otherCharge moment change
dc.subject.otherCurrent moment change
dc.titleDancing sprites: detailed analysis of two case studies
dc.typeArticle
dc.subject.lemacTempestes
dc.subject.lemacEnginyeria elèctrica
dc.contributor.groupUniversitat Politècnica de Catalunya. LRG - Lightning Research Group
dc.identifier.doi10.1002/2016JD025548
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://onlinelibrary.wiley.com/doi/10.1002/2016JD025548/abstract
dc.rights.accessOpen Access
local.identifier.drac19681377
dc.description.versionPreprint
local.citation.authorSoula, S.; Mlynarczyk, J.; Fullekrug, M.; Pineda, N.; Georgis, J.-F.; Van Der Velde, O.; Montaña, J.; Fabro, F.
local.citation.publicationNameJournal of geophysical research: atmospheres
local.citation.volume122
local.citation.number6
local.citation.startingPage3173
local.citation.endingPage3192


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