Design of Segmented Ultra-Wideband TEM Horn Antenna for Calibration of Wideband Electromagnetic Pulse Sensors. [PDF]
Zhang T +8 more
europepmc +1 more source
Weak Positive Discharges Leading to Lightning Initiation
Abstract Lightning‐initiating events in the Earth's atmosphere originate within compact regions of space with dimensions on the order of hundreds of meters. In the strongest events the associated current pulses propagate from positive to negative thundercloud charge centers at speeds approaching one tenth of the speed of light, a process referred to as
Victor P. Pasko +2 more
wiley +1 more source
An Implantable Phototriggered Prodrug Depot Patch Enables Actively Programmable Drug Release for Post-Myocardial Infarction Therapy. [PDF]
Lu H +10 more
europepmc +1 more source
First Observation of Four‐Band Ion Cyclotron Whistlers
Abstract Ion cyclotron whistlers are frequently observed in low Earth orbit, typically formed when right‐hand polarized lightning whistlers undergo polarization reversal at crossover frequencies. In this study, we for the first time report a four‐band ion cyclotron whistler event detected by Van Allen Probe A.
Huicong Chen +6 more
wiley +1 more source
Geometry-Driven Deformation and Degradation Behavior of Crimped Electrical Connections Under Coupled Environmental and Chemical Loading. [PDF]
Sunguray C +3 more
europepmc +1 more source
Abstract Lightning activity is strongly concentrated in tropical continental “chimneys”, among which the African lightning chimney stands out as the most intense globally. However, until recently, the incomplete and spatially uneven detection efficiency of ground‐based lightning networks, together with the limited spatio‐temporal coverage of satellite ...
K. Németh +8 more
wiley +1 more source
Convergence of Multidimensional Sensing: A Review of AI-Enhanced Space-Division Multiplexing in Optical Fiber Sensors. [PDF]
Sabitu RI, Malekmohammadi A.
europepmc +1 more source
Microphysics and Kinematics of a High Flash Rate Storm With a Bottom‐Heavy Charge Structure
Abstract An atypical thunderstorm with unusual lightning and charge structure characteristics propagated through Cordoba province, Argentina, during the austral warm season in late 2018. This storm exhibited echo tops near 10.5 km, with high lightning activity concentrated at low altitudes.
Bruno L. Medina +4 more
wiley +1 more source
Low-cost solar-powered urban soundscape sensor. [PDF]
Cassens L +3 more
europepmc +1 more source
Instrumental Artefacts Can Reverse Apparent Lightning–Climate Trends
Abstract Lightning is an Essential Climate Variable, yet long‐term detection records may be compromised by changes in detection technology. Using more than three decades of Austrian lightning observations (1992–2024), we show that instrumental artefacts can reverse the apparent sign of lightning–climate trends.
Hannes Wieser +2 more
wiley +1 more source

