Results 41 to 50 of about 86,801,291 (233)

Dependence of Warm Season Cloud-to-Ground Lightning Polarity on Environmental Conditions over Sichuan, Southwest China

Advances in Meteorology, 2021
The effects of thermodynamic and moisture factors on cloud-to-ground (CG) lightning polarity in the warm season were discussed. Small convective available potential energy (CAPE) represents relatively shallow convection, which is beneficial to the ...
Pengguo Zhao, Hui Xiao, Chang Liu, Yunjun Zhou   +3 more
doaj   +1 more source

Effect of cloud-to-ground lightning and meteorological conditions on surface NOx and O-3 in Hong Kong

, 2016
Cloud-to-ground (CG) lightning, meteorological conditions and corresponding surface nitrogen oxides (NOx) and ozone (O3) variations in relation to thunderstorm and lightning activities over Hong Kong at Kwai Chung (urban), Tung Chung (new town) and Tap ...
Liu, Yonglin, Liu, Y, Wang, X, Sheng, Guoying, Lin, Q, Peng, P, Guo, Hai, Sheng, G, Chan, LY, Bi, X, Wang, Xinming, Guo, H, Bi, Xinhui, Chan, L. Y., Fei, L, Fei, Leilei, Lin, Qinhao, Peng, Ping'an   +17 more
core   +1 more source

A physics-based ensemble machine-learning approach to identifying a relationship between lightning indices and binary lightning hazard

Frontiers in Earth Science
To convert lightning indices generated by numerical weather prediction experiments into binary lightning hazard, a machine-learning tool was developed.
Andrew M. Thomas, Stephen Noble
doaj   +1 more source

Impact of fragmented urbanization on observed precipitation

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study investigates the impact of fragmented urban landscapes on downwind precipitation by applying an innovative observation‐centered approach to an extensive rain gauge network in Belgium. The approach classifies the observations based on the upwind urban land cover fraction, and compares precipitation indices between rural‐ and urban‐labeled ...
Amber Jacobs, Kwinten Van Weverberg, Steven Caluwaerts   +2 more
wiley   +1 more source

Lightning Current Distribution of the First and Subsequent Strokes Based on the Lightning Location System: Survey in Yunnan Power Grid

Atmosphere
Lightning is an electrical discharge phenomenon in the atmosphere caused by charge separation in clouds, which is divided into cloud-to-ground (CG) and cloud-to-cloud (CC) lightning.
Yutang Ma, Hongchun Shu, Changxin Xiao, Gaohui Yang, Chengwei Xie, Mengmeng Zhu, Pulin Cao   +6 more
doaj   +1 more source

Evaluation of Indian Lightning Location Network (ILLN) and characterization of cloud-to-ground lightning over Lucknow and Shillong using an ordinary camera [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
This work is showing the performance of Indian Lightning Location Network (ILLN) and lightning characteristics around Lucknow and Shillong India. Observation of ground truth using ordinary camera show the location accuracy of lightning location network ...
A. Srivastava, S. D. Pawar, S. S. Kundu, V. Gopalkrishnan, M. Domkawale, M. Kumar, S. P. Aggarwal   +6 more
doaj   +1 more source

Spider Lightning Characterization: Integrating Optical, NLDN, and GLM Detection

Atmosphere, 2023
Here, we investigate the characteristics of spider lightning analyzing individual lightning flashes as well as the overall electric storm system. From July to November 2022, optical camera systems captured the visually spectacular spider lightning in ...
Gilbert Green, Naomi Watanabe
doaj   +1 more source

Lightning electromagnetic emission location using arrival time differencing (LEELA): An introduction to the Met Office's next generation Very Low Frequency lightning location system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This paper describes the Met Office's new lightning location system LEELA. A brief overview of the upgraded hardware and geolocation algorithms is given. LEELA has improved lightning detection capabilities, especially at night. When comparing LEELA to the previous ATDnet system against ground truths LEELA has 100% storm detection efficiency within 5 km
Graeme Marlton, Mike Protts, Stephen Prust, Edmund Keith Stone, Debbie O'Sullivan, Sue Twelves, Francesco Devoto, Claire Witham   +7 more
wiley   +1 more source

Occurrence of positive and negative polarity cloud-to-ground lightning flashes: Case study of CGR4 and GPATS data for Brisbane, Australia

, 2011
The occurrences of positive and negative polarity cloud-to-ground lightning flashes were detected by ground-based lightning flash counters CGR4 in Brisbane,Australia.
Darveniza, M., Kuleshov, Yuriy, D Mackerras, Darveniza, Mat, Mackerras, D., M Darveniza, Kuleshov, Y., Y Kuleshov, Jayaratne, Rohan, Hettrick, P., Mackerras, David, P Hettrick, E Jayaratne, Jayaratne, E. R., Hettrick, Paul   +14 more
core   +1 more source

Characterizing Pulse Attenuation of Intra-Cloud and Cloud-to-Ground Lightning with E-Field Signal Measured at Multiple Stations

Remote Sensing, 2022
In this paper, we analyze the waveform data of nearly 200,000 intra-cloud (IC) and cloud-to-ground (CG) lightning discharges detected by the Jianghuai Area Sferic Array on 26–29 August 2019 to investigate the propagation features of lightning ...
Wenwei Wang, Baoyou Zhu
doaj   +1 more source