Results 31 to 40 of about 792 (164)

A Thunderstorm Cloud Point Charge Localization Method Based on CEEMDAN and SG Filtering

open access: yesIEEE Access, 2021
The current thunderstorm monitoring methods ignore the nonlinear and non-stationary characteristics of atmospheric electric field signals, which has a negative effect on the monitoring results. Based on complementary ensemble empirical mode decomposition
Xu Yang, Hongyan Xing, Ling Zhuang
doaj   +1 more source

A Model for Positive Corona Inception from Charged Ellipsoidal Thundercloud Hydrometeors [PDF]

open access: yes, 2022
Lightning is observed to incept in thundercloud electric fields below the threshold value Ek for discharge initiation. To explain this, the local enhancement of the electric field by hydrometeors is considered.
Nijdam, S.   +3 more
core   +2 more sources

The Illumination of Thunderclouds by Lightning: 4. Volumetric Thunderstorm Imagery

open access: yesEarth and Space Science, 2022
Optical instruments such as the Geostationary Lightning Mapper (GLM) detect lightning based on transient changes in cloud illumination. The horizontal location of lightning is determined from the coordinates of the pixels on the imaging array illuminated
Michael Peterson, Douglas Mach
doaj   +1 more source

Influence of ion attachment on the vertical distribution of the electric field and charge density below a thunderstorm [PDF]

open access: yesAnnales Geophysicae, 1994
A numerical model called PICASSO [Production d'Ions Corona Au Sol Sous Orage (French) and Production of Corona Ions at the Ground Beneath Thundercloud (English)], previously designed, is used to describe the evolution of the principal electrical ...
X. Qie, S. Soula, S. Chauzy
doaj   +1 more source

Remote sensing of thundercloud electric fields [PDF]

open access: yes, 1997
Theoretical and experimental work was performed on emission of photons from the air within and above thunderclouds and within lightning channels. Predictions were made of the telltale emissions from ionized nitrogen molecules and these emissions were ...
Buchwald, M.   +2 more
core   +1 more source

Prediction of positive cloud-to-ground lightning striking zones for tilted thundercloud based on line charge model

open access: yes, 2022
Bushfire is known as one of the ascendant factors to create pyrocumulus thundercloud that causes the ignition of new fires by pyrocumulonimbus (pyroCb) lightning strikes mostly of positive polarity, and causes massive damage to nature and infrastructure.
Shah, Rakibuzzaman   +7 more
core   +1 more source

A Numerical Study of Aerosol Effects on Electrification with Different Intensity Thunderclouds

open access: yesAtmosphere, 2019
Numerical simulations are performed to investigate the effect of varying CCN (cloud condensation nuclei) concentration on dynamic, microphysics, electrification, and charge structure in weak, moderate, and severe thunderstorms.
Zheng Shi   +4 more
doaj   +1 more source

Classification of Hydrometeors Using Measurements of the Ka-Band Cloud Radar Installed at the Milešovka Mountain (Central Europe)

open access: yesRemote Sensing, 2018
In radar meteorology, greater interest is dedicated to weather radars and precipitation analyses. However, cloud radars provide us with detailed information on cloud particles from which the precipitation consists of.
Zbyněk Sokol   +2 more
doaj   +1 more source

Recovery curves of the surface electric field after lightning discharges occurring between the positive charge pocket and negative charge centre in a thundercloud [PDF]

open access: yes, 2002
Surface observations of the electric field recovery curves of the lightning discharges occurring between the positive charge pocket and negative main charge centre in an overhead thundercloud are reported.
Pawar, S. D.   +3 more
core   +1 more source

Numerical simulation of positive streamer development in thundercloud field enhanced near raindrops [PDF]

open access: yes, 2016
As the threshold field strength for the breakdown in air significantly exceeds the maximum measured thundercloud strength 3 kV/cm/atm, the problem of lightning initiation remains unclear.
Kutsyk, I. M.   +3 more
core   +1 more source

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