Results 81 to 90 of about 86,801,291 (233)

Estimates of lightning ground flash density in Australia and its relationship to thunder-days

, 2004
A method of deriving lightning ground flash density from CIGRE lightning flash counter registrations based on the detection efficiency of the instrument, independent of the latitudinal variation of cloud flash-to-ground flash ratio is presented.
Jayaratne, Rohan, Kuleshov, Yuriy
core  

Comparison Study of the Electrical Nature of Two Smoke‐Enhanced Sea Breeze Thunderstorm Cases During TRACER

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 18, 28 September 2026.
Abstract Sea breeze thunderstorm cases during the Tracking Aerosol Convection Interactions Experiment (TRACER) were analyzed in terms of lightning responses to aerosol influences. U.S. Department of Energy Atmospheric Radiation Measurement Mobile Facility (AMF), Houston Lightning Mapping Array (HLMA), and Earth Networks Total Lightning Network (ENTLN ...
Timothy Logan, Victoria Fortner, Lijun Zhao, Krishna Calindi   +3 more
wiley   +1 more source

Effects of Side Bileaders on Parent Positive Leader

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Side bileaders are commonly induced near a progressing positive leader, yet their effects on the parent positive leader remain poorly understood. Here we investigate their effects by combining high‐speed video with LF/VLF lightning channel mapping.
Shanfeng Yuan, Jizhou Feng, Joan Montanyà, Rubin Jiang, Yunjiao Pu, Dongfang Wang, Zhuling Sun, Dongshuai Li, Mingyuan Liu, Yu Wang, Oscar van der Velde, Xiushu Qie   +11 more
wiley   +1 more source

Lightning mapping observations of downward lightning flashes to wind turbines [PDF]

, 2016
Negative downward leaders that produced lightning strokes to wind turbines are identified by means of the Lightning Mapping Array data of the Ebro Valley Laboratory (NE Spain). Four cases are analyzed together with weather radar imagery.
Van der Velde, Oscar Arnoud, Pineda Rüegg, Nicolau, Argemí Ribera, Oriol, Domingo Dalmau, Anna, Montañá Puig, Juan, Salvador Yuste, Albert   +5 more
core   +2 more sources

Event‐Level Attribution of Wildfire Ignition Cause: A Machine‐Learning Approach

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Wildfire ignition causes, namely human or lightning, largely determine fire behavior and impacts, but are sparsely reported worldwide. Event‐level fire causes have been inferred regionally using high‐accuracy lightning observations, but global generalization remains limited.
Kairui Qiu, Yan Yu, Hongxuan Su, Yunxiao Tang, Shuoqing Wang, Xianglei Meng, Qiyu Song, Wei Guo   +7 more
wiley   +1 more source

Observation of cloud-to-ground lightning channels with high-speed video camera

, 2014
International audienceBetween May and October 2013 (period of sustained thunderstorm activity in France), several cloud-to-ground lightning flashes have been observed in Paris area with a high-speed video camera (14000 frames per second).
Barnéoud, P., Lalande, P., Laroche, P., Buguet, M., Blanchet, P., Pédeboy, S.   +5 more
core   +2 more sources

Rapid evolution of energetic lightning strokes in Mediterranean winter storms

npj Climate and Atmospheric Science
The occurrence of winter lightning concentrates in a few specific regions in the world, including the Mediterranean, where electromagnetic signatures of this interesting dangerous phenomenon have not yet been studied in detail. We investigate the initial
I. Kolmašová, O. Santolík, A. Kolínská, S. Pédeboy, R. Lán, L. Uhlíř   +5 more
doaj   +1 more source

Fast Breakdowns Observed in the Initial Leaders of Two Energetic Compact Strokes

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract We have observed 1 fast positive breakdown (FPB) and 20 fast negative breakdowns (FNBs) for the first time in the initial leader of two energetic compact strokes (ECSs) using a broadband interferometer. It was found that the FPB propagated upward over a distance of 30 m with a speed of 1.2×107m/s $1.2\times {10}^{7}\mathrm{m}/\mathrm{s ...
Qingliu Yang, Daohong Wang, Ting Wu, David M. Smith, Yuki Hamajima, Jinliang He   +5 more
wiley   +1 more source

Wind Turbine Blade Crack Detection and Assessment in Images Using Machine Learning

Wind Energy, Volume 29, Issue 9, September 2026.
ABSTRACT As the wind energy industry matures, inspection of wind turbine blades (WTBs) is shifting from a manual process involving rope access and grading of damage, towards unmanned aerial vehicle (UAV) photography and artificial intelligence‐aided processing of data.
Callum Rothon, Nina Dethlefs, Robert C. Houseago   +2 more
wiley   +1 more source

Cloud-to-ground lightning in Portugal: patterns and dynamical forcing [PDF]

, 2012
An analysis of the cloud-to-ground discharges (CGD) over Portugal is carried out using data collected by a network of sensors maintained by the Portuguese Meteorological Institute for 2003–2009 (7 yr).
Fragoso, Marcelo, Santos, J. A., S. Correia, J. A. Santos, Reis, M. A., Sousa, J., Janeira, M., M. Janeira, Leite, S. M., M. Fragoso, M. A. Reis, J. Sousa, S. M. Leite, Correia, S.   +13 more
core   +2 more sources