Results 41 to 50 of about 61,921 (204)
Advances in Meteorology, 2018 Winter and spring tornado activity tends to be heightened during the La Niña phase of the El Niño/Southern Oscillation and suppressed during the El Niño phase.
Todd W. Moore +2 more
doaj +1 more source
A tornado daily impacts simulator for the central and southern United States
Meteorological Applications, 2020 In an average year (1979–2016), the United States experiences nearly 1,100 tornadoes, which cause a total of 68 fatalities. Annual fatality rates have decreased since the peak in the 1920s, but there is a concern that they could start to rise again with ...
Joshua J. Hatzis +2 more
doaj +1 more source
Atmosphere, 2020 Convective scale processes and, therefore, thunderstorm-related hazards cannot be simulated using regional climate models with horizontal grid spacing in the order of 10 km.
Abdullah Kahraman +2 more
doaj +1 more source
A Study of the Effects of Tornado Translation on Wind Loading Using a Potential Flow Model
Frontiers in Built Environment, 2022 This paper investigates the effects of tornado translation on pressure and overall force experienced by an airfoil subjected to tornado loading and presents a framework to reproduce the flow conditions and effects of a moving tornado.
Shuan Huo +5 more
doaj +1 more source
Magnetic Tornado Properties: A Substantial Contribution to the Solar Coronal Heating via Efficient Energy Transfer [PDF]
, 2023 In solving the solar coronal heating problem, it is crucial to comprehend the mechanisms by which energy is conveyed from the photosphere to the corona. Recently, magnetic tornadoes, characterized as coherent, rotating magnetic field structures extending from the photosphere to the corona, have drawn growing interest as a possible means of efficient ...
arxiv +1 more source
Review of Analytical Approaches for Simulating Motions of Helical Vortex
Frontiers in Energy Research, 2022 The study investigates helical vortices, which are fundamental structures in fluid dynamics, and a basic model of tip vortices behind wind turbines. In connection with the intensive development of wind energy, interest in modeling helical vortex wakes ...
V. L. Okulov, V. L. Okulov, Y. Fukumoto
doaj +1 more source
A solar tornado triggered by flares? [PDF]
, 2012 Solar tornados are dynamical, conspicuously helical magnetic structures mainly observed as a prominence activity. We investigate and propose a triggering mechanism for the solar tornado observed in a prominence cavity by SDO/AIA on September 25, 2011. High-cadence EUV images from the SDO/AIA and the Ahead spacecraft of STEREO/EUVI are used to correlate
arxiv +1 more source
Annals of the American Association of Geographers, 2019 Tornadoes are extremely destructive phenomena that can cause tremendous loss of life and catastrophic damage to the natural and built landscape. Their frequency of occurrence varies notably from season to season and from year to year. Tornado variability
Todd W. Moore
semanticscholar +1 more source
Atmosphere, 2023 Severe convective storms that produce tornadoes and straight-line winds usually develop under particular environmental conditions and have specific signatures on the cloud tops associated with intense updrafts.
Alexander Chernokulsky +3 more
doaj +1 more source
Measurement and characterization of infrasound from a tornado producing storm [PDF]
Journal of the Acoustical Society of America (2019), 146, 1528, 2018 A hail-producing supercell on 11 May 2017 produced a small (EFU) tornado near Perkins, Oklahoma (35.97, -97.04) at 2013 UTC. Two infrasound microphones with a 59-m separation and a regional Doppler radar station were located 18.7 km and 70 km from the tornado, respectively. Elevated infrasound levels were observed starting 7 minutes before the verified
arxiv +1 more source