Results 71 to 80 of about 465 (149)

Compounding Human and Bioclimatic Factors Driving the Global Fire Crisis

Global Change Biology, Volume 32, Issue 11, November 2026.
The global fire crisis has emerged from centuries of disruptions to coupled social‐ecological systems that govern fire regimes. ABSTRACT Over millennia, social and ecological systems have been shaped by fire and have in turn shaped fire regimes. However, recent decades have seen an escalating “fire crisis” characterized by an increasing incidence of ...
Rachael H. Nolan, Jane G. Cawson, Luke Collins, Sarah J. Hart, Christopher I. Roos   +4 more
wiley   +1 more source

Rapid evolution of energetic lightning strokes in Mediterranean winter storms

npj Climate and Atmospheric Science
The occurrence of winter lightning concentrates in a few specific regions in the world, including the Mediterranean, where electromagnetic signatures of this interesting dangerous phenomenon have not yet been studied in detail. We investigate the initial
I. Kolmašová, O. Santolík, A. Kolínská, S. Pédeboy, R. Lán, L. Uhlíř   +5 more
doaj   +1 more source

Gamma‐Ray Glows Commonly Followed by Lightning: A Statistical Study of the Spatio‐Temporal Relationship

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Gamma‐ray glows are prolonged enhancements of gamma rays from thunderclouds, which are often linked to large‐scale electric fields rather than individual lightning. The link between glows and lightning remains poorly understood. Here, we analyzed 300 glows observed during the ALOFT aircraft campaign and optical lightning detected by GLM.
Chu‐Nan Zhang, Yunjiao Pu, Steven Cummer, Martino Marisaldi, Nikolai Østgaard, Andrey Mezentsev, Ingrid Bjørge‐Engeland, Øystein Håvard Færder, David Alexandre Stephan Sarria, Nikolai G. Lehtinen, Anders Nødland Fuglestad   +10 more
wiley   +1 more source

Weak Positive Discharges Leading to Lightning Initiation

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
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, Sebastien Celestin, Anne Bourdon   +2 more
wiley   +1 more source

Stroke multiplicity and horizontal scale of negative charge regions in thunderclouds

Geophysical Research Letters, 2016
An X‐band polarimetric radar and multiple lightning detection systems are used to document the initial cloud‐to‐ground lightning flash in a large number (46 cases) of incipient thunderstorms, as part of the CHUVA‐Vale field campaign during the 2011/2012 ...
Earle R. Williams, Enrique V. Mattos, Luiz A. T. Machado   +2 more
doaj   +1 more source

Repeatable Velocity Fine Structure of Lightning K‐Leaders From a Single VHF Interferometer Made Three‐Dimensional

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract K‐processes re‐illuminate lightning channels at speeds of order 107 m s−1, but measuring their three‐dimensional (3‐D) propagation velocity has required multi‐station systems available at few sites. An error‐isomorphism range inversion upgrades a single very‐high‐frequency interferometer (INTF) into a 3‐D imager: Lightning Mapping Array (LMA ...
Xiangpeng Fan, Jie Shi, Yajun Li, Yijun Zhang, Paul R. Krehbiel, Guo Zhao, Tong Zhang, Jun Liu, Xiaoxin Li   +8 more
wiley   +1 more source

Probabilistic Forecasting of Lightning Strikes over the Continental USA and Alaska: Model Development and Verification

Fire
Lightning is responsible for the most area annually burned by wildfires in the extratropical region of the Northern Hemisphere. Hence, predicting the occurrence of wildfires requires reliable forecasting of the chance of cloud-to-ground lightning strikes
Ned Nikolov, Phillip Bothwell, John Snook   +2 more
doaj   +1 more source

Sub Microsecond Analysis of Negative Cloud-To-Ground Lightning Flashes

Indonesian Journal of Electrical Engineering and Computer Science, 2018
This paper expounds a development software for the identification of lightning discharge in cloud-to-ground flashes. The study was to reduce a misleading detection of the electric field radiation of a lightning discharge profile by considering the important parameters of sub microseconds structure of lightning return stroke.
A. I. A. Rahman, M. A. Bahari, Z. A. Baharudin, A. A. Zulkefle, M. Zainon, M. A. M. Hanafiah   +5 more
openaire   +3 more sources

Daily Peak Activity of the African Lightning Chimney Based on Meteosat Third Generation (MTG) Lightning Imager (LI), World Wide Lightning Location Network (WWLLN), and Schumann Resonance (SR) Observations

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 20, 28 October 2026.
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, E. Williams, Q. Wang, A. Neska, G. Sátori, M. Herein, T. Haszpra, P. Steinbach, T. Bozóki   +8 more
wiley   +1 more source

Measuring and Mapping Urban NO2 Pollution Heterogeneity Using a Custom Pandora Spectrometer Experiment and Observations From TEMPO

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 20, 28 October 2026.
Abstract Nitrogen dioxide (NO2) is a primary pollutant present at high concentrations in urban areas. Ground based measurements remain sparse and satellite observations rely on retrievals, so understanding intraurban, diurnal‐scale changes in NO2 is challenging.
R. H. Mooers, J. A. Geddes, C. Naughton, A. Pandey, B. K. Place, G. González Abad, N. Lombel   +6 more
wiley   +1 more source