Characteristics and conditions of production of transient luminous events observed over a maritime storm

Publication: Research - peer-reviewJournal article – Annual report year: 2010

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DOI

  • Author: Soula, S.

    Laboratoire d'Aérologie, Université de Toulouse, France

  • Author: van der Velde, O.

    Electrical Engineering Department, Technological University of Catalonia, Spain

  • Author: Palmiéri, J.

    Laboratoire d'Aérologie, Université de Toulouse, France

  • Author: Chanrion, Olivier Arnaud

    Solar System Physics, National Space Institute, Technical University of Denmark, Elektrovej, 2800, Kgs. Lyngby, Denmark

  • Author: Neubert, Torsten

    Solar System Physics, National Space Institute, Technical University of Denmark, Elektrovej, 2800, Kgs. Lyngby, Denmark

  • Author: Montanyà, J.

    Electrical Engineering Department, Technological University of Catalonia, Spain

  • Author: Gangneron, F.

    Laboratoire d'Aérologie, Université de Toulouse, France

  • Author: Meyerfeld, Y.

    Laboratoire d'Aérologie, Université de Toulouse, France

  • Author: Lefeuvre, F.

    Laboratoire Physique et Chimie de l'Environnement, Université d'Orléans, France

  • Author: Lointier, G.

    Laboratoire Physique et Chimie de l'Environnement, Université d'Orléans, France

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On the night of 15/16 November 2007, cameras in southern France detected 30 transient luminous events (TLEs) over a storm located in the Corsican region (France). Among these TLEs, 19 were sprites, 6 were halos, and 5 were elves. For 26 of them, a positive “parent” cloud-to-ground lightning (P+CG) flash was identified. The peak current of the P+CG flashes for the sprites had an average value of 63 kA and had a maximum value of 125 kA. The flashes for the halos and the elves had average values of 272 and 351 kA, respectively, and they had maximum values of 312 and 384 kA, respectively. No TLEs were detected after negative CG flashes with very large peak currents. Among the 26 P+CG flashes, 23 were located in a stratiform region with reflectivity values lower than 45 dBZ. The CG flashes in this region were classified into two groups according to the time interval separating them from the following flash: one group with values less than 2 s and one with values greater than 2 s. About 79% of all CGs were produced in a sequence of at least two flashes less than 2 s apart. For 65.5% of the sequences, the first flash was positive with an average peak current of 73 kA, while the later +CG flashes in a sequence had much lower peak currents. Several triangulated sprites were found to be shifted from their P+CG flashes by about 10 to 50 km and preferentially downstream. The observations suggest that the P+CG flashes can initiate both sprites and other CG flashes in a storm.
Original languageEnglish
JournalJournal of Geophysical Research
Publication date2010
Volume115
PagesD16118
Number of pages14
ISSN0148-0227
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 8
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