Model of the First Lightning Return Stroke Using Bidirectional Leader Concept

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F22%3A00565634" target="_blank" >RIV/68378289:_____/22:00565634 - isvavai.cz</a>

Výsledek na webu

<a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022JD037459" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022JD037459</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2022JD037459" target="_blank" >10.1029/2022JD037459</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Model of the First Lightning Return Stroke Using Bidirectional Leader Concept

Popis výsledku v původním jazyce

We have developed a new lightning return stroke model which takes into account a realistic charge distribution to compute the ambient electric potential. It contains a nonlinear resistance model for the development of the finite conductivity of the lightning channel. It also describes a redistribution of charges after the bottom end of the channel is attached to the potential of the ground. The model is based on solving Maxwell's equations linked to Poisson's equation, and coupled with Ohm's law. The waveshape of the current at the channel base is obtained from the model. The simulated current decreases and its rise time increases with height, which is in accordance with the luminosity observations. The electric and magnetic field waveforms modeled for different distances from the lightning flash show that most of the waveform features typically observed at these distances are well reproduced. We also successfully compare modeled magnetic field waveforms with measurements at the distances larger than 30 km.

Název v anglickém jazyce

Model of the First Lightning Return Stroke Using Bidirectional Leader Concept

Popis výsledku anglicky

We have developed a new lightning return stroke model which takes into account a realistic charge distribution to compute the ambient electric potential. It contains a nonlinear resistance model for the development of the finite conductivity of the lightning channel. It also describes a redistribution of charges after the bottom end of the channel is attached to the potential of the ground. The model is based on solving Maxwell's equations linked to Poisson's equation, and coupled with Ohm's law. The waveshape of the current at the channel base is obtained from the model. The simulated current decreases and its rise time increases with height, which is in accordance with the luminosity observations. The electric and magnetic field waveforms modeled for different distances from the lightning flash show that most of the waveform features typically observed at these distances are well reproduced. We also successfully compare modeled magnetic field waveforms with measurements at the distances larger than 30 km.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Geophysical Research-Atmospheres

ISSN

2169-897X

e-ISSN

2169-8996

Svazek periodika

127

Číslo periodika v rámci svazku

24

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

e2022JD037459

Kód UT WoS článku

000943218500001

EID výsledku v databázi Scopus

2-s2.0-85145193610