Television Image of a Large Upward Electrical Discharge Above a Thunderstorm System

  title={Television Image of a Large Upward Electrical Discharge Above a Thunderstorm System},
  author={Robert Franz and Robert James Nemzek and John R. Winckler},
  pages={48 - 51}
An image of an unusual luminous electrical discharge over a thunderstorm 250 kilometers from the observing site has been obtained with a low-light-level television camera. The discharge began at the cloud tops at 14 kilometers and extended into the clear air 20 kilometers higher. The image, which had a duration of less than 30 milliseconds,resembled two jets or fountains and was probably caused by two localizd electric charge concentrations at the cloud tops. Large upward discharges may create… 

Upward Electrical Discharges From Thunderstorm Tops

A variety of storm top electrical discharges have been observed using several types of low-light imagers, film, and the human eye. Recently, a video recorded an unprecedented, bright blue upward

Electrical discharge from a thundercloud top to the lower ionosphere

A video recording of a blue jet propagating upwards from a thundercloud to an altitude of about 70 km is reported, taken at the Arecibo Observatory, Puerto Rico, to speculate that it may be common and therefore represent an unaccounted for component of the global electric circuit.

Elves : Lightning-induced transient luminous events in the lower ionosphere

Observations of optical phenomena at. high alti- tude a, bove thunderstorms using a multichannel high-speed photometer and image intensified CCD cameras were carried out at Yucca Ridge Field Station

Gigantic jets between a thundercloud and the ionosphere

Observations of five gigantic jets that establish a direct link between a thundercloud and the ionosphere at 90 km elevation indicate that the extremely-low-frequency waves were generated by negative cloud-to-ionosphere discharges, which would reduce the electrical potential between ionosphere and ground.

Rare measurements of a sprite with halo event driven by a negative lightning discharge over Argentina

As part of a collaborative campaign to investigate Transient Luminous Events (TLEs) over South America, coordinated optical, ELF/VLF, and lightning measurements were made of a mesoscale thunderstorm

Lightning‐driven electric fields measured in the lower ionosphere: Implications for transient luminous events

[1] Transient luminous events above thunderstorms such as sprites, halos, and elves require large electric fields in the lower ionosphere. Yet very few in situ measurements in this region have been

Meteorological and Electrical Conditions of Two Mid‐latitude Thunderstorms Producing Blue Discharges

Blue discharges are one type of rarely observed upward discharge emerging from the top of thunderstorms. The favorable meteorological conditions and charge structures needed to produce this marvelous

Measurements of radio frequency signals from lightning in Jupiter's atmosphere

During the descent of the Galileo probe through Jupiter's atmosphere, the lightning and radio emissions detector (LRD) instrument measured radio frequency signals presumably from electrical



Electrical measurements in the atmosphere and the ionosphere over an active thunderstorm: 1. Campaign overview and initial ionospheric results

The first simultaneous electric field observations performed in the ionosphere and atmosphere over an active nighttime thunderstorm are reported here. In the stratosphere, typical storm-related dc

Electrical measurements in the atmosphere and the ionosphere over an active thunderstorm: 2. Direct current electric fields and conductivity

On August 9, 1981, a series of three rockets were launched over an air mass thunderstorm off the eastern seaboard of Virginia while simultaneous stratospheric and ground-based electric field

Nocturnal photographs taken from a U-2 airplane looking down on tops of clouds illuminated by lightning

Abstract Photographs have been taken at night from an airplane at an altitude of 20 km looking directly down on the tops of thunderclouds illuminated by lightning. The hard, cauliflower-like

Recent observations of lightning discharges from the top of a thundercloud into the clear air above

A note of inquiry published in a magazine read by airplane pilots has elicited 15 new observations of a rare form of lightning that comes out of the cloud top, goes up vertically, and terminates in

The electric field of a thundercloud and some of its effects

A thundercloud is an electric generator in which the separation of positive and negative charges occurs at a rate corresponding to a current which may amount to some amperes; the potential difference

Subionospheric VLF signatures of nighttime D region perturbations in the vicinity of lightning discharges

A 12-hour sequence of perturbations of subionospheric VLF signals observed in association with lightning provided preliminary evidence that the ionospheric regions perturbed in these events may be

Electric Potential Gradients above Thunderstorms

Abstract Measurements of the electric potential gradient from a U-2 airplane flying over thunderstorms show that sustained gradients occurred only in the vicinity of convective cloud disturbances

Observation and interpretation of fast sub‐visual light pulses from the night sky

Fast large aperture photometers directed at the zenith on clear nights near Minneapolis have recorded many light pulses in the millisecond time range, but aside from man-made events these were almost

The Lightning Discharge

It is considered that the potential required to cause a lightning discharge is only a small percentage of that hitherto believed necessary, namely, of the order of 5 x 107 volts as compared with Wilson's 1 x 109 to 6 x 109 volts.

A theory of thundercloud electricity

  • C. Wilson
  • Environmental Science
    Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
  • 1956
The thundercloud is regarded as a great influence machine, the ionization currents associated with it being the agents by which its electromotive force is developed and maintained. The moving ions