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Global distribution of winter lightning: a threat to wind turbines and aircraft [PDF]

Natural Hazards and Earth System Sciences, 2016
Lightning is one of the major threats to multi-megawatt wind turbines and a concern for modern aircraft due to the use of lightweight composite materials. Both wind turbines and aircraft can initiate lightning, and very favorable conditions for lightning
J. Montanyà, F. Fabró, O. van der Velde, V. March, E. R. Williams, N. Pineda, D. Romero, G. Solà, M. Freijo   +8 more
doaj   +1 more source

Lightning-AI/lightning-flash: Minor compatibility patch

, 2022
What's Changed Add CLIP backbones for text / image classification by @ethanwharris in https://github.com/Lightning-AI/lightning-flash/pull/1458 Replace DP/DDP/DDPSpawn plugins to strategies, keep the old for compatibility by @krshrimali in https ...
Aniket Maurya, Ananya Harsh Jha, Suman Michael, Abhijith Neil Abraham, PythicCoder, flozi00, Ethan Harris, Sean Naren, Jirka Borovec, Akihiro Nitta, Teddy Koker, edenlightning, Nicki Skafte Detlefsen, Edgar Riba, Karthik Rangasai, Justus Schock, Luca Actis Grosso, Mabu Manaileng, Pietro Lesci, Kaushik B, Ibraheem Muhammad Moosa, Kushashwa Ravi Shrimali, Adrian Wälchli, William Falcon, Eric Hofesmann, Carlos Mocholí, thomas chaton   +26 more
core   +1 more source

Characteristics of the Preliminary Breakdown in Inverted-polarity Intracloud Lightning Flashes

应用气象学报, 2023
The intracloud (IC) flashes can be classified into normal and inverted-polarity types according to their initial leader propagation directions. Due to the rare occurrence of inverted-polarity IC flashes with downward preliminary breakdown (PB) processes,
Gao Panliang, Shi Dongdong, Wu Ting, Wang Daohong, Ji Xiaoling   +4 more
doaj   +1 more source

The initial stage of cloud lightning imaged in high-resolution [PDF]

Journal of Geophysical Research: Atmospheres, 2020
With LOFAR we have been able to image the development of lightning flashes with meter-scale accuracy and unprecedented detail. We discuss the primary steps behind our most recent lightning mapping method. To demonstrate the capabilities of our technique we show and interpret images of the first few milliseconds of two intra-cloud flashes.
O. Scholten, Brian Hare, J. Dwyer, Chris Sterpka, Ivana Kolmašová, O. Santolík, Radek Lan, Ludek Uhlir, Stijn Buitink, A. Corstanje, H. Falcke, Tim Huege, Joerg Hoerandel, G. K Krampah, P. Mitra, K. Mulrey, Anna Nelles, Hershal Pandya, Alex Pel, Jörg P. Rachen, S. thoudam, T. N Trinh, Sander ter Veen, T. Winchen   +23 more
openaire   +8 more sources

Determining the size of lightning-induced electron precipitation patches [PDF]

, 2002
[1] We analyze Trimpi signatures during 23 and 24 April 1994 at four sites on or near the Antarctic Peninsula (Palmer, Faraday, Rothera, and Halley) on subionospheric VLF signals received from four U. S.
Clilverd, MA, Nunn, D, Dowden, Richard L., Lev-Tov, Sean J., Clilverd, Mark A., Dowden, RL, Inan, US, Inan, Umran S., Lev-Tov, SJ, Rodger, Craig J., Rodger, CJ, Nunn, David, Smith, Andy J., Smith, AJ   +13 more
core   +1 more source

Lightning-AI/lightning-bolts: Minor patch release

, 2022
What's Changed resolve require collisions by @Borda in https://github.com/Lightning-AI/lightning-bolts/pull/938 Metrics by @BaruchG in https://github.com/Lightning-AI/lightning-bolts/pull/892 Full Changelog: https://github.com/Lightning-AI/lightning ...
Ananya Harsh Jha, Shion Matsumoto, Annika Brundyn, Sidhant Sundrani, JongMok Lee, zlapp, Shivam Mehta, Jirka Borovec, Akihiro Nitta, Rohit Gupta, Teddy Koker, Clément POIRET, Jason Wang, Aditya Oke, Nathan Raw, Garry O'Donnell, Atharva Phatak, Ido Kessler, Donal Byrne, Christoph Clement, Zhengyu Yang, Baruch, Adrian Wälchli, William Falcon, Haswanth Aekula, Brian Ko, otaj   +26 more
core   +1 more source

New mechanism for lightning initiation [PDF]

, 1996
This is the final report of a three-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). To distinguish radio-frequency (rf) signals generated by lightning from the electromagnetic pulse produced by a nuclear explosion, it is necessary to understand the fundamental nature of thunderstorm ...
Roussel-Dupre, R., Buchwald, M., Gurevich, A.   +2 more
openaire   +2 more sources

Spatial, Temporal and Electrical Characteristics of Lightning in Reported Lightning-Initiated Wildfire Events [PDF]

Fire, 2019
Analysis was performed to determine whether a lightning flash could be associated with every reported lightning-initiated wildfire that grew to at least 4 km2. In total, 905 lightning-initiated wildfires within the Continental United States (CONUS) between 2012 and 2015 were analyzed. Fixed and fire radius search methods showed that 81–88% of wildfires
Christopher J. Schultz, Nicholas J. Nauslar, J. Brent Wachter, Christopher R. Hain, Jordan R. Bell   +4 more
openaire   +3 more sources

On the Problem of Critical Electric Field of Atmospheric Air

Atmosphere, 2021
It is traditionally accepted to define the dielectric strength of air as an electric field corresponding to the balance between the rates of impact ionization and electrons’ attachment to neutrals. Its reduced value is known to be about 110 Td regardless
Artem Syssoev, Dmitry Iudin, Fedor Iudin, Vitaly Klimashov, Alexey Emelyanov   +4 more
doaj   +1 more source

Understanding lightning leaders [PDF]

, 2016
a lightning flash is defined by the initiation and multiple development of leaders. But lightning leaders are still poorly understood. Since most of my atmospheric electricity has been focused on lightning that means that it has been devoted to ...
Montañá Puig, Juan
core   +2 more sources