Penetration of multipole thundercloud electric fields into the ionosphere

Details Penetration of multipole thundercloud electric fields into the ionosphere Penetration of multipole thundercloud electric fields into the ionosphere

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jatp...56..349v&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 56, no. 3, p. 349-359

Physics

1

Atmospheric Physics, Clouds (Meteorology), E Region, Electric Fields, Electron Density (Concentration), Electron Density Profiles, Geomagnetism, Ionospherics, Magnetosphere-Ionosphere Coupling, Meteorology, Thunderstorms, Upper Ionosphere, Boundary Conditions, Continuity Equation, Current Density, Electrical Resistivity, Night, Steady State

Scientific paper

The penetration of dipole and tripole thundercloud electrostatic fields into the middle- and high-latitude ionosphere is theoretically studied. The computations show that giant thunderclouds can produce transverse radial (relative to the multipole) electric fields, which are sufficient to cause a significant effect on the electron density profiles N(z) in the E- and F-regions, including the main ionospheric maximum and the topside ionosphere. The effect is much stronger at night. The thundercloud forms a cavity whose electron density is several times reduced compared with the background electron density. The horizontal cavity dimension has a radius of 50-100 km. Due to the high conductivity along the geomagnetic field lines, electron density irregularities propagate through the magnetosphere to the magnetically conjugate ionosphere.

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