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    Recent results from studies of electric discharges in the mesosphere

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    Neubert(2008).pdf (1.462Mb)
    Authors
    Neubert, T.
    Rycroft, M.
    Farges, T.
    Blanc, E.
    Chanrion, O.
    Arnone, E.
    Odzimek, A.
    Arnold, N.
    Enell, C.-F.
    Turunen, E.
    Bösinger, T.
    Mika, Á.
    Haldoupis, C.
    Steiner, R.J.
    Van der Velde, O.
    Soula, S.
    Berg, P.
    Boberg, F.
    Thejll, P.
    Christiansen, B.
    Ignaccolo, M.
    Füllekrug, M.
    Verronen, P.T.
    Montanya, J.
    Crosby, N.
    Show allShow less
    Discipline
    Physical sciences
    Subject
    Atmospheric radiation
    Atmospherics
    Atoms
    Circuit simulation
    Discharge (fluid mechanics)
    Electric breakdown of gases
    Electric network analysis
    Electromagnetic wave emission
    Electromagnetic waves
    Electron optics
    Electrostatics
    Gamma rays
    Heating
    Ionization of gases
    Lightning
    Metal analysis
    Networks (circuits)
    Perturbation techniques
    Radiation effects
    Storms
    Sulfur compounds
    Thunderstorms
    Upper atmosphere
    Atmospheric dynamics
    Electromagnetic radiations
    Energetic electrons
    Energy depositions
    Gamma-ray
    Global atmospheric electric circuits
    Global effects
    High altitudes
    Imaging cameras
    Infrasound
    Intracloud
    Local perturbations
    Mesosphere
    Model estimates
    Modelling of processes
    Neutral atmospheres
    Ranging
    Scale effects
    Simultaneous observations
    Southern Europe
    Sprite generations
    Sprites
    Streamer discharges
    Thunderstorm regions
    Trace gasses
    Electric discharges
    atmospheric dynamics
    atmospheric electricity
    cloud to ground lightning
    electromagnetic radiation
    mesosphere
    modeling
    sprite
    stratosphere
    thunderstorm
    Eurasia
    Europe
    Southern Europe
    Audience
    Scientific
    Date
    2008
    Metadata
    Show full item record
    Description
    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.
    Citation
    Neubert, T.; Rycroft, M.; Farges, T.; Blanc, E.; Chanrion, O.; Arnone, E.; Odzimek, A.; Arnold, N.; Enell, C.-F.; Turunen, E.; Bösinger, T.; Mika, Á.; Haldoupis, C.; Steiner, R.J.; Van der Velde, O.; Soula, S.; Berg, P.; Boberg, F.; Thejll, P.; Christiansen, B.; Ignaccolo, M.; Füllekrug, M.; Verronen, P.T.; Montanya, J.; Crosby, N. (2008). Recent results from studies of electric discharges in the mesosphere. , Surveys in Geophysics, Vol. 29, Issue 2, 71-137, DOI: 10.1007/s10712-008-9043-1.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/4345
    doi: http://dx.doi.org/10.1007/s10712-008-9043-1
    scopus: 2-s2.0-54949145312
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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