Results 31 to 40 of about 465 (149)

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

A Baseline for the Predictability of U.S. Cloud‐to‐Ground Lightning [PDF]

Geophysical Research Letters, 2018
Abstract The product of convective available potential energy and precipitation rate is used as a proxy for U.S. cloud‐to‐ground (CG) lightning. The proxy is computed from numerical weather prediction model outputs and thus provides a simple method for producing CG lightning threat forecasts.
Michael K. Tippett, William J. Koshak
openaire   +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

Halos generated by negative cloud‐to‐ground lightning [PDF]

Geophysical Research Letters, 2007
The Imager for Sprites and Upper Atmospheric Lightning (ISUAL) on the FORMOSAT‐2 spacecraft observes Transient Luminous Events (TLE) like sprites, elves, and halos from space. We analyzed halos that were observed in Central America close enough to ELF/VLF receivers that allowed for the determination of the polarity of the parent lightning.
H. U. Frey, S. B. Mende, S. A. Cummer, J. Li, T. Adachi, H. Fukunishi, Y. Takahashi, A. B. Chen, R.‐R. Hsu, H.‐T. Su, Y.‐S. Chang   +10 more
openaire   +1 more source

“Thinking Out Loud” and “Pivoting on the Fly”—An Empirical Review and Critical Incident Study of How Physicians Engage in Incidental Learning Amidst Complexity

Human Resource Development Quarterly, EarlyView.
ABSTRACT This study explores incidental learning among physicians navigating uncertainty during the COVID‐19 pandemic. Using a constructivist research design, we conducted a literature review of 13 empirical studies on incidental learning in complexity and analyzed critical incident interviews with 12 emergency medicine and intensive care physicians ...
Henriette Lundgren, Karen E. Watkins, Victoria J. Marsick, Dimitrios Papanagnou, Urvashi Vaid   +4 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

How Thunderstorms Are Changing in Mexico: Trends and Characteristics

International Journal of Climatology, EarlyView.
Thunderstorm days in Mexico have increased significantly since 1992, with pronounced regional and seasonal contrasts. Increasing moisture emerges as the most spatially coherent environmental signal. At the same time, enhanced instability characterizes northeastern and central Mexico, revealing distinct regional controls on thunderstorm activity and ...
José Francisco León‐Cruz, Alejandro Jaramillo‐Moreno, Karla Pereyra‐Castro, Christian Dominguez   +3 more
wiley   +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

Cloud‐to‐ground lightning in the blizzard of ′93

Geophysical Research Letters, 1993
In the 48‐hour period of 06 UT March 12 to 06 UT March 14, 1993, the eastern United States experienced one of the most severe storms of the century, This winter storm produced over 59,000 cloud‐to‐ground flashes with a peak lightning rate exceeding 5,100 flashes per hour.
openaire   +1 more source