Results 31 to 40 of about 7,343 (289)

Biotic and abiotic regulation of lightning fire initiation in the mixedwood boreal forest [PDF]

, 2006
Lighting, fire is the dominant natural disturbance of the western mixedwood boreal forest of North America. We quantified the independent effects of weather and forest composition oil lightning fire initiation (a detected and recorded fire start ...
Cumming, S.G., Wein, R.W., Flannigan, M.D., Krawchuk, M.A.   +3 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

Charge structure in volcanic plumes: a comparison of plume properties predicted by an integral plume model to observations of volcanic lightning during the 2010 eruption of Eyjafjallajökull, Iceland [PDF]

, 2014
Observations of volcanic lightning made using a lightning mapping array during the 2010 eruption of Eyjafjallajökull allow the trajectory and growth of the volcanic plume to be determined.
Sonja A. Behnke, Woodhouse, Mark J., Mark J. Woodhouse, Behnke, Sonja A.   +3 more
core   +1 more source

Real-Time Water Vapor Maps from a GPS Surface Network: Construction, Validation, and Applications [PDF]

, 2009
In this paper the construction of real-time integrated water vapor (IWV) maps from a surface network of global positioning system (GPS) receivers is presented.
Holleman, I., Holtslag, A.A.M., Haan, S., de   +2 more
core   +1 more source

Luminosity of initial breakdown in lightning [PDF]

Journal of Geophysical Research: Atmospheres, 2013
Time correlated high‐speed video and electromagnetic data for 15 cloud‐to‐ground and intracloud lightning flashes reveal bursts of light, bright enough to be seen through intervening cloud, during the initial breakdown (IB) stage and within the first 3 ms after flash initiation. Each sudden increase in luminosity is coincident with a CG type (12 cases)
M. Stolzenburg, T. C. Marshall, S. Karunarathne, N. Karunarathna, L. E. Vickers, T. A. Warner, R. E. Orville, H.‐D. Betz   +7 more
openaire   +1 more source

Microwave Radiation Associated with Lightning Initiation Events of Negative Cloud-to-Ground Flashes

Atmosphere, 2022
In this paper, we examined the initiation events of ten negative cloud-to-ground (CG) flashes detected close to measurement stations on 12 November (CG-1 to CG-5) and 24 November (CG-6 to CG-10), 2019.
Muhammad Haziq Mohammad Sabri, Ammar Ahmed Alkahtani, Mohd Riduan Ahmad, Shamsul Ammar Shamsul Baharin, Gaopeng Lu, Zen Kawasaki, Vernon Cooray   +6 more
doaj   +1 more source

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

Initiation Process of a Winter Cloud-to-Ground Lightning Flash [PDF]

, 2023
<p>Lightning  location results data. This dataset includes complete data, which means it has not undergone quality control. The time needs to be subtracted from the corresponding paper (Initiation Process of a Winter Cloud-to-Ground Lightning ...
Yang, Qingliu
core   +1 more source

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