Results 51 to 60 of about 270 (169)

Downward Positive Leader Propagation Modes and Their Effects in Positive Cloud‐to‐Ground Lightning Characteristics

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 9, 16 May 2026.
Abstract The return stroke in a cloud‐to‐ground (CG) flash is initiated when the downward leader either reaches the ground or connects with an upward leader from a grounded structure. Unlike negative downward leaders, which typically propagate in a highly branched manner, downward positive leaders (DPLs) can propagate either in a branched or unbranched
Marcelo M. F. Saba, Diego R. R. da Silva, Ivan T. Cruz, Tagianne P. da Silva, Paola B. Lauria, José Claudio O. Silva, Gabriel S. Diniz, Tom A. Warner, Rasha U. Abbasi, João Carlos M. Alves, Giovane B. Suss, Miguel B. Guimarães Neto, Listz S. Araujo, Ny T. Kieu   +13 more
wiley   +1 more source

Seasonal Variability of Precipitating Systems in Four Radar Domains of Northeast Brazil

International Journal of Climatology, Volume 46, Issue 6, May 2026.
This study analyzes the climatology and evaluates how the physical aspects of precipitating systems are influenced by the dry and wet seasons in Northeast Brazil, highlighting seasonal variations in the frequency, size, intensity, and duration of these systems in the regions of Natal, Maceió, Petrolina, and Salvador.
Amanda Carolina da Silva Queiroz, Thiago Souza Biscaro   +1 more
wiley   +1 more source

Rogue antimatter found in thunderclouds [PDF]

Nature, 2015
Aeroplane detects signature spike in photons that does not fit any known source of antiparticles.
openaire   +1 more source

Improving Numerical Weather Forecasts of Rainfall Over Central Africa Using a Three‐Dimensional Variational Data Assimilation Technique and the Weather Research and Forecasting Model

Meteorological Applications, Volume 33, Issue 3, May/June 2026.
This study evaluates satellite radiance assimilation using the 3DVAR technique within WRFDA to improve rainfall forecasts over Central Africa. Results show modest error reduction and improved spatial organization of rainfall compared to CHIRPS, while atmospheric variables remain comparable with ERA5, highlighting the potential of data assimilation in ...
Taguemfo Kammalac Jores, Vondou Derbetini Appolinaire, Igri Moudi Pascal, Kamsu Tamo Pierre Honoré   +3 more
wiley   +1 more source

Synoptic meteorological conditions of gamma-ray glows in winter thunderstorms

Progress in Earth and Planetary Science, 2023
The Gamma-ray Observation of Winter Thunderclouds collaboration has detected 70 gamma-ray glows, a high-energy phenomenon associated with thunderstorms, from October 2016 to March 2020 in Kanazawa and Komatsu, Ishikawa Prefecture, a central part of Japan
Yuuki Wada, Miwa Tsurumi, Syugo Hayashi, Koichiro Michimoto   +3 more
doaj   +1 more source

Detecting Thunderstorm‐Related High‐Energy Phenomena in Weak Signals

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 8, 28 April 2026.
Abstract Gamma‐ray glows (GRGs) are high‐energy events associated with thunderstorms, characterized by an enhancement of the high‐energy background radiation lasting from a few seconds to several minutes. They are typically detected near their sources by balloons, aircraft, mountain‐based observatories, or at sea level in regions where thunderstorms ...
Y. Hazem, S. Celestin, F. Trompier, Y. Hobara   +3 more
wiley   +1 more source

The Life Cycle of a Stratospheric Smoke Plume as Seen From EarthCARE—Tracking a Plume From Canada to Europe

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract At the end of May 2025, extremely strong wildfires in Canada produced several pyrocumulonimbus clouds lifting the smoke particles up to the lower stratosphere. Stratospheric aerosol optical depths of more than 2.5 were observed by the ATmospheric LiDAR (ATLID) onboard of the Earth Cloud, Aerosol and Radiation Explorer (EarthCARE) satellite ...
Moritz Haarig, Holger Baars, Leonard König, David P. Donovan, Albert Ansmann, Sergey Khaykin, Romain Ceolato, Benedikt Gast, Crisofer Jimenez, Athena A. Floutsi, Robin J. Hogan, Annabel Chantry, Fabien Marnas, Johanna Roschke, Gerd‐Jan van Zadelhoff, Ulla Wandinger   +15 more
wiley   +1 more source

Properties of Positive Narrow Bipolar Events Observed in South‐Eastern France

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract Narrow bipolar events (NBEs) are brief intracloud discharges that generate the most intense radiation in the high frequency and very high frequency radio bands. Their occurrence is statistically correlated with strong convection and typically takes place in the upper regions of thunderclouds.
I. Kolmašová, S. Soula, O. Santolík, E. Defer, Y. Zhu, S. Pédeboy, R. Lán, A. Kolínská, L. Uhlíř   +8 more
wiley   +1 more source

Deforestation Impacts on Clouds and Precipitation Over Borneo Vary Across the Diurnal Cycle

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract The impact of tropical deforestation on clouds and precipitation remains uncertain due to complex interactions between land and atmospheric processes on convective and mesoscales. Here, we examine convective‐scale processes controlling the short‐term atmospheric response to deforestation over Borneo using multi‐day large eddy simulations ...
G. Leung, S. C. van den Heever
wiley   +1 more source

A model for Thundercloud Charge Separation

Sri Lankan Journal of Physics, 2013
A theoretical model of thundercloud charge separation is presented. The model assume that  moisture in  the updraft moving  as a stream with uniform velocity condenses into particles of graupel  in reaching cooler regions of the atmosphere.  Falling graupels acquire a negative charge by shedding the inductive positive charge which is carried away by ...
K. Tennakone, Prabath Hewageegana
openaire   +2 more sources