Results 41 to 50 of about 7,402 (230)

Characterization and Localization of Chemical Explosions and Lightning Flashes by a Flotilla of Stratospheric Balloons

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 5, 16 March 2026.
Abstract On 3 August 2021, a flotilla of four Heliotrope solar hot air balloons was launched from central New Mexico (USA). The balloons, equipped with microbarometers, flew from sunrise to sunset at altitudes between 17 and 22 km. During the flight, eight chemical explosions ranging from 45 to 136 kg TNT equivalent and a thunderstorm occurred in the ...
T. Farges, G. Burgos, S. Albert, D. Bowman, O. Gainville, A. Le Pichon   +5 more
wiley   +1 more source

The Sandia transportable triggered lightning instrumentation facility [PDF]

, 1991
Development of the Sandia Transportable Triggered Lightning Instrumentation Facility (SATTLIF) was motivated by a requirement for the in situ testing of a munitions storage bunker.
Fisher, Richard J., Schnetzer, George H.
core   +1 more source

The Future of Hydrogen‐Powered Aviation: Technologies, Challenges, and a Strategic Roadmap for Sustainable Decarbonization

Advanced Energy and Sustainability Research, Volume 7, Issue 3, March 2026.
Hydrogen‐powered aviation offers a transformative pathway to zero‐emission flight by eliminating in‐flight CO2 emissions. Key considerations include propulsion systems (fuel cells and hydrogen combustion), cryogenic storage and insulation challenges, infrastructure and cost barriers, and supply‐chain constraints.
Mubasshira, Md Mahbubur Rahman, Karib Hassan Khan, Md Nizam Uddin, Dewan Hafiz Nabil   +4 more
wiley   +1 more source

Characterization of the initial stage of negative rocket‐triggered lightning [PDF]

Journal of Geophysical Research: Atmospheres, 1999
We performed a statistical study on the initial stage (IS) of negative rocket‐triggered lightning using 37 channel‐base current recordings obtained during the summer of 1994 at Fort McClellan, Alabama, and during the summers of 1996 and 1997 at Camp Blanding, Florida.
D. Wang, V. A. Rakov, M. A. Uman, M. I. Fernandez, K. J. Rambo, G. H. Schnetzer, R. J. Fisher   +6 more
openaire   +1 more source

Fail‐Controlled Classifiers: A Swiss‐Army Knife Toward Trustworthy Systems

Software: Practice and Experience, Volume 56, Issue 3, Page 239-259, March 2026.
ABSTRACT Background Modern critical systems often require to take decisions and classify data and scenarios autonomously without having detrimental effects on people, infrastructures or the environment, ensuring desired dependability attributes. Researchers typically strive to craft classifiers with perfect accuracy, which should be always correct and ...
Fahad Ahmed Khokhar, Tommaso Zoppi, Andrea Ceccarelli, Leonardo Montecchi, Andrea Bondavalli   +4 more
wiley   +1 more source

A Rocket‐Triggered Lightning Flash Containing Negative‐Positive‐Negative Current Polarity Reversal During Its Initial Stage

Journal of Geophysical Research: Atmospheres, 2020
A rocket‐triggered lightning flash containing negative‐positive‐negative current polarity reversal during its initial stage is analyzed using multiple synchronized observation data. The flash was triggered under a thunderstorm transition zone between the
Fengquan Li, Zhuling Sun, R. Jiang, Guoying Tang, Mingyuan Liu, Xiao Li, Hongbo Zhang, Shanfeng Yuan, Ye Tian, X. Qie   +9 more
semanticscholar   +1 more source

Ionospheric Characterization Using VLF Whistlers

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Broadband very low frequency (VLF, 3–30 kHz) energy emitted from lightning travels long distances in subionospheric propagation modes. Some of this energy couples into the ionosphere and travels to satellite altitudes along a predominantly field‐aligned path in what is known as a “whistler” propagation mode. Along this path, these VLF signals (
E. R. Worthington, M. B. Cohen
wiley   +1 more source

Rocket-triggered lightning strikes and forest fire ignition [PDF]

Background information on the rocket-triggered lightning project at Kennedy Space Center (KSC), a summary of the forecasting problem there, the facilities and equipment available for undertaking field experiments at KSC, previous research activity ...
Fenner, James H.
core   +4 more sources

In-flight measurements of energetic radiation from lightning and thunderclouds

, 2015
In the certification procedure aircraft builders carry out so-called icing tests flights, where the zero degree Celsius altitude is deliberately sought and crossed in or under thunderstorms. Airbus also used these flights to test ILDAS, a system aimed to
Bardet, M., Boissin, J. -F., de Boer, A., Kochkin, P. O., van Deursen, A. P. J.   +4 more
core   +2 more sources

The energy spectrum of X‐rays from rocket‐triggered lightning [PDF]

Journal of Geophysical Research: Atmospheres, 2015
Although the production of X-rays from natural and rocket-triggered lightning leaders have been studied in detail over the last 10 years, the energy spectrum of the X-rays has never been well measured because the X-rays are emitted in very short but intense bursts that result in pulse pileup in the detectors. The energy spectrum is important because it
S. Arabshahi, J. R. Dwyer, E. S. Cramer, J. E. Grove, C. Gwon, J. D. Hill, D. M. Jordan, R. J. Lucia, I. B. Vodopiyanov, M. A. Uman, H. K. Rassoul   +10 more
openaire   +1 more source