Stratospheric Joule heating by lightning continuing current inferred from radio remote sensing

Füllekrug, Martin; Ignaccolo, Massimiliano; Kuvshinov, A. V.

doi:10.1029/2006rs003472

Cited by 14 publications

(18 citation statements)

References 35 publications

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“…The importance of a strong lightning continuing current in the production of TLEs has also been noted by Fu¨llekrug et al (2006a).…”

Section: Article In Pressmentioning

confidence: 95%

“…6(a). The total charge transferred to ground by this þCG discharge is $67 C. (Price et al, 1997 took a value of 43 C.) Fu¨llekrug et al (2006a), investigating particularly intense lightning discharges, showed that the total charge transferred from cloud to ground by one þCG discharge was $230 C. The change in the ionospheric potential caused by the þCG is shown in Fig. 6(b): the potential decreases by 41 V from 300 kV in $20 s, and recovers in $250 s. The magnitude of the fairweather electric field decreases by 16 mV/m and recovers to the initial value in the same time.…”

Section: A Positive Cloud-to-ground Dischargementioning

confidence: 99%

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New model simulations of the global atmospheric electric circuit driven by thunderstorms and electrified shower clouds: The roles of lightning and sprites

Rycroft

Odzimek

Arnold

et al. 2007

Journal of Atmospheric and Solar-Terrestrial Physics

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101

137

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“…The importance of a strong lightning continuing current in the production of TLEs has also been noted by Fu¨llekrug et al (2006a).…”

Section: Article In Pressmentioning

confidence: 95%

Section: A Positive Cloud-to-ground Dischargementioning

confidence: 99%

New model simulations of the global atmospheric electric circuit driven by thunderstorms and electrified shower clouds: The roles of lightning and sprites

Rycroft

Odzimek

Arnold

et al. 2007

Journal of Atmospheric and Solar-Terrestrial Physics

Self Cite

101

137

View full text Add to dashboard Cite

“…A mean lightning current waveform was inferred from the recordings of 52,510 intense lightning discharges (Füllekrug et al 2006b) made with a global network of ELF magnetometers (Füllekrug and Constable 2000). It was found that the lightning current initially decays with a time constant of *2 ms and that it lowers *60 C from cloud to ground within the first *10 ms of the discharge.…”

Section: Radiation At Elfmentioning

confidence: 99%

Recent Results from Studies of Electric Discharges in the Mesosphere

Neubert¹,

Rycroft²,

Farges³

et al. 2008

Surv Geophys

122

147

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The paper reviews recent advances in studies of electric discharges in the stratosphere and mesosphere above thunderstorms, and their effects on the atmosphere. The primary focus is on the sprite discharge occurring in the mesosphere, which is the most commonly observed high altitude discharge by imaging cameras from the ground, but effects on the upper atmosphere by electromagnetic radiation from lightning are also considered. During the past few years, co-ordinated observations over Southern Europe have been made of a wide range of parameters related to sprites and their causative thunderstorms. Observations have been complemented by the modelling of processes ranging from the electric discharge to perturbations of trace gas concentrations in the upper atmosphere. Observations point to significant energy deposition by sprites in the neutral atmosphere as observed by infrasound waves detected at up to 1000 km distance, whereas elves and lightning have been shown significantly to affect ionization and heating of the lower ionosphere/mesosphere. Studies of the thunderstorm systems powering high altitude discharges show the important role of intracloud (IC) lightning in sprite generation as seen by the first simultaneous observations of IC activity, sprite activity and broadband, electromagnetic radiation in the VLF range. Simulations of sprite ignition suggest that, under certain conditions, energetic electrons in the runaway regime are generated in streamer discharges. Such electrons may be the source of X-and Gamma-rays observed in lightning, thunderstorms and the so-called Terrestrial Gamma-ray Flashes (TGFs) observed from space over thunderstorm regions. Model estimates of sprite perturbations to the global atmospheric electric circuit, trace gas concentrations and atmospheric dynamics suggest significant local perturbations, and possibly significant meso-scale effects, but negligible global effects.

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“…Only very few −CG‐triggered sprites have been reported [ Barrington‐Leigh et al , 1999; Williams et al , 2007]. +CG flashes support continuing currents up to a few kiloamperes (kA) which can last a few hundred milliseconds [e.g., Rust et al , 1985; Bell et al , 1998; Cummer and Füllekrug , 2001; Füllekrug et al , 2006; Campos et al , 2009], so that large amounts of charge can be drained from the cloud. In response to the charge removal, a transient electric field develops between the cloud and the ionosphere.…”

Section: Introductionmentioning

confidence: 99%

Spatial and temporal evolution of horizontally extensive lightning discharges associated with sprite‐producing positive cloud‐to‐ground flashes in northeastern Spain

et al. 2010

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[1] During the evening of 6 August 2008, a small mesoscale convective system (MCS) entered the area of radar and 2-D interferometric lightning detection system coverage in northeastern Spain and produced 17 sprites recorded by a camera at only 95-180 km distance. This study presents an analysis of the in-cloud component of the spriteassociated lightning flashes and those of other flashes. The analysis focuses on the horizontal development of sprite-producing lightning by discussing three examples, divided into the periods before the positive cloud-to-ground flash (+CG), between +CG and the end of the sprite, and the period after the sprite. Location and horizontal size of sprites appear to be well explained by the temporal and spatial development of the lightning path. The majority of sprite-producing discharges started directly at the rear side of developing and mature convective cores within the decaying MCS, either with the +CG or with preceding negative leaders. The +CG started a burst of VHF sources during which the sprite developed. Delayed carrot sprites developed after a secondary, smaller burst and were well collocated with the burst toward the rear of the MCS. The order of development of elements in a grouped sprite followed the direction of lightning propagation during the burst stage. The second part of the analysis concentrates on the metrics of sequences of VHF sources and shows that sprites are indeed produced by the largest, longest lasting discharges with particularly large line-perpendicular dimensions (37 km median compared with 11 km for +CG >25 kA).Citation: van der Velde, O. A., J. Montanyà, S. Soula, N. Pineda, and J. Bech (2010), Spatial and temporal evolution of horizontally extensive lightning discharges associated with sprite-producing positive cloud-to-ground flashes in northeastern Spain,

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Stratospheric Joule heating by lightning continuing current inferred from radio remote sensing

Cited by 14 publications

References 35 publications

New model simulations of the global atmospheric electric circuit driven by thunderstorms and electrified shower clouds: The roles of lightning and sprites

New model simulations of the global atmospheric electric circuit driven by thunderstorms and electrified shower clouds: The roles of lightning and sprites

Recent Results from Studies of Electric Discharges in the Mesosphere

Spatial and temporal evolution of horizontally extensive lightning discharges associated with sprite‐producing positive cloud‐to‐ground flashes in northeastern Spain

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