Results 21 to 30 of about 3,044 (216)

Imaging lightning intracloud initial stepped leaders by low‐frequency interferometric lightning mapping array [PDF]

Geophysical Research Letters, 2016
AbstractBy comparing the source position of pulses during initial leaders and the paths of subsequent dart leaders from typical bilevel intracloud (IC) flashes, we demonstrate a new method to image the detailed three‐dimensional (3‐D) structure and stepping dynamics of IC initial leaders.
Fanchao Lyu, Steven A. Cummer, Gaopeng Lu, Xuan Zhou, J. Weinert   +4 more
openalex   +3 more sources

Improving Forecast of Severe Oceanic Mesoscale Convective Systems Using FY-4A Lightning Data Assimilation with WRF-FDDA

Remote Sensing, 2022
The Fengyun-4A (FY-4A) geostationary satellite carries the Lightning Mapping Imager that measures total lightning rate of convective systems from space at high spatial and temporal resolutions.
Hao Sun, Haoliang Wang, Jing Yang, Yingting Zeng, Qilin Zhang, Yubao Liu, Jiaying Gu, Shiye Huang   +7 more
doaj   +3 more sources

Lightning ring signatures with the Meteosat Lightning Imager (MTG-LI) compared to the Lightning Mapping Array in northeastern Spain

Launched into geostationary orbit in December 2022, the first Meteosat Third Generation satellite contains the Lightning Imager, which started delivering data operationally since July 4th, 2024, monitoring lightning over Africa, Europe, western parts of the Middle East and eastern South America with a fixed angular resolution pixel size, equivalent to ...
Oscar van der Velde, Tomáš Púčik, Nicolau Pineda, Joan Montanyà, Jesús A. López, David Romero, B. Viticchiè, Sven‐Erik Enno   +7 more
openalex   +2 more sources

Evaluation of the lightning imaging sensor aboard the International Space Station using Lightning Mapping Array

, 2019
In this work the data from a Lightning Mapping Array (LMA Ebro Delta) and the Lightning Imaging Sensor (ISS-LIS) has been used with the aim to explore which properties of the former make it more likely to have simultaneous ISS-LIS detections associated.
Ícar Fontcuberta García-Cuenca
openalex   +2 more sources

Characteristics of Lightning Activities over the Tibetan Plateau Based on Satellite Detection and Its Circulation Background Analysis

Atmosphere, 2023
Based on the detection data obtained by the LMI (Lightning Mapping Imager)—China’s first satellite-based lightning observation payload—from 2018–2022, combined with the ERA5 (ECMWF Reanalysis v5) reanalysis data of the same period, the temporal and ...
Jie Zhu, Shulin Zhi, Suling Ren
doaj   +1 more source

Preliminary Research on a Comparison and Evaluation of FY-4A LMI and ADTD Data through a Moving Amplification Matching Algorithm

Remote Sensing, 2020
In this study, a new moving amplification matching algorithm was proposed, and then the temporal and spatial differences and correlation were analysed and evaluated by comparing the FengYun-4A Lightning Mapping Imager (FY-4A LMI) data and the China ...
Pengfei Li, Guofu Zhai, Wenjing Pang, Wen Hui, Wenjuan Zhang, Jing Chen, Liting Zhang   +6 more
doaj   +1 more source

On the timing between terrestrial gamma ray flashes, radio atmospherics, and optical lightning emission [PDF]

, 2017
On 25 October 2012 the Reuven Ramaty High Energy Solar Spectroscope Imager (RHESSI) and the Tropical Rainfall Measuring Mission (TRMM) satellites passed over a thunderstorm on the coast of Sri Lanka.
Bitzer, Phillip, Christian, Hugh J., Gjesteland, Thomas, Østgaard, Nikolai   +3 more
core   +3 more sources

Case Study of a Retrieval Method of 3D Proxy Reflectivity from FY-4A Lightning Data and Its Impact on the Assimilation and Forecasting for Severe Rainfall Storms

Remote Sensing, 2020
As the first Geostationary Satellite with the LMI (Lightning Mapping Imager) instrument aboard running over the eastern hemisphere, FY-4A (Feng-Yun-4A) can better indicate severe convection and compensate for the limitations of radar observation in ...
Yaodeng Chen, Zheng Yu, Wei Han, Jing He, Min Chen   +4 more
doaj   +1 more source

Characteristics of broadband lightning emissions associated with terrestrial gamma ray flashes [PDF]

, 2011
To characterize lightning processes that produce terrestrial gamma ray flashes (TGFs), we have analyzed broadband (
Cummer, Steven A., Grefenstette, Brian W., Han, Feng, Li, Jingbo, Lu, Gaopeng, Smith, David M.   +5 more
core   +2 more sources

Insulator fault feature extraction system of substation equipment based on machine vision

IET Networks, EarlyView., 2022
Abstract The artificial intelligence technology and intelligent automation are more and more widely used, the insulators play a supporting and insulating role in the operation of the grid. The use of machine vision inspection technology to detect insulator faults has become an inevitable trend of the times.
Keruo Jiang, Qiaoqun Xia, Lijun Ma, Xin Xu, Zhipeng Shao   +4 more
wiley   +1 more source