Results 21 to 30 of about 270 (169)
A Thunderstorm Cloud Point Charge Localization Method Based on CEEMDAN and SG Filtering
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
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The Illumination of Thunderclouds by Lightning: 4. Volumetric Thunderstorm Imagery
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
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Influence of ion attachment on the vertical distribution of the electric field and charge density below a thunderstorm [PDF]
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
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A Numerical Study of Aerosol Effects on Electrification with Different Intensity Thunderclouds
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
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Energetic Charged Particles Above Thunderclouds [PDF]
The French government has committed to launch the satellite TARANIS to study transient coupling processes between the Earth’s atmosphere and near-Earth space. The prime objective of TARANIS is to detect energetic charged particles and hard radiation emanating from thunderclouds. The British Nobel prize winner C.T.R.
Füllekrug, Martin +16 more
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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
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The distribution of electricity in thunderclouds [PDF]
Abstract The mechanism of thunderstorms has been the subject of much controversy in recent years, and at the present time there are at least two theories which find considerable support. To arrive at a theory which would satisfy all criticism would be a great advance towards a solution of the more fundamental problem of the ...
George Clarke Simpson, F. J. Scrase
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The polarity of thunderclouds [PDF]
Abstract In a paper on ‘'The Electric Fields of South African Thunderstorms,” Mr. J. Craib and the writer described some observations made at Somerset East during 1926, from which it was concluded that the majority of the storms examined were of positive polarity.
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The polarity of thunderclouds [PDF]
Abstract The mechanism of the maintenance of the negative charge upon the surface of the earth has long been sought. C. T. R. Wilson has made the suggestion that the activity of thunderstorms of positive polarity—positively charged above and negatively charged below—will serve to separate positive and negative charges, by carrying ...
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A FEW days ago I had an opportunity of estimating the height of a bank of thunderclouds, an account of which may interest the readers of NATURE.
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