Results 21 to 30 of about 53 (45)

Performance Evaluation of LMI Based on Low-Frequency Three-Dimensional Total Lightning Flash Location Data

Remote Sensing
At present, there is still some uncertainty in the evaluation of the performance of the Fengyun 4A Lightning Mapping Imager (LMI), which is mainly limited by the detection performance of the reference detection system and the suitability of the ...
Mengjin Zou, Yang Zhang, Yanfeng Fan, Jingxuan Wang, Huiyi Zhang   +4 more
doaj   +1 more source

Analysis of Spatiotemporal Characteristics of Lightning Activity in the Beijing-Tianjin-Hebei Region Based on a Comparison of FY-4A LMI and ADTD Data

Atmosphere
Accurate lightning data are critical for disaster warning and climate research. This study systematically compares the Fengyun-4A Lightning Mapping Imager (FY-4A LMI) satellite and the Advanced Time-of-arrival and Direction (ADTD) lightning location ...
Yahui Wang, Qiming Ma, Jiajun Song, Fang Xiao, Yimin Huang, Xiao Zhou, Xiaoyang Meng, Jiaquan Wang, Shangbo Yuan   +8 more
doaj   +1 more source

Three-Dimensional Lightning Characteristics Analysis over the Tibetan Plateau Based on Satellite-Based and Ground-Based Multi-Source Data

Atmosphere
Based on the data from the Chinese national ground-based (LFEDA: Low-frequency E-field Detection Array) and satellite-based lightning-detection systems (LMI: Lightning Mapping Imager), the spatial and temporal distribution statistical properties of all ...
Jie Zhu, Shulin Zhi, Dong Zheng, Zhengguo Yuan   +3 more
doaj   +1 more source

Improving prediction of short-duration heavy rainfall in Guangxi, China during the pre-summer rainy season based on Fengyun-4A lightning frequency and a machine learning algorithm

Frontiers in Earth Science
IntroductionThis study investigated the relationships between short-duration heavy rainfall (SDHR) events and lightning activity over Guangxi, China, during the pre-summer rainy season from 2019 to 2023.MethodsThe analysis was conducted using the ...
Weixiang Huang, Xiaoli Luo, Wei Zhang, Bo Feng, Xiaofei Xia, Chenying Yi, Weijun Hu   +6 more
doaj   +1 more source

Study on Temporal and Spatial Distribution Characteristics of Lightning on Qinghai-Xizang Plateau in Summer 2019-2023

Gaoyuan qixiang
The Qinghai-Xizang Plateau， due to its high altitude， exhibits unique lightning and convective activity compared to lower-altitude regions.Using the ‘Group’ data from the Lightning Mapping Imager （LMI） on the Fengyun-4A satellite， a statistical analysis ...
Jianghao AN, Sheng CHEN, Zeyong HU
doaj   +1 more source

Optical observations of thunderstorms from the International Space Station: recent results and perspectives. [PDF]

NPJ Microgravity, 2023
Neubert T, Gordillo-Vázquez FJ, Huntrieser H.   +2 more
europepmc   +1 more source

Technology for Position Correction of Satellite Precipitation and Contributions to Error Reduction-A Case of the '720' Rainstorm in Henan, China. [PDF]

Sensors (Basel), 2022
Tian W, Cao X, Peng K.
europepmc   +1 more source

风云四号闪电成像仪聚类算法的参数化方案

Dianci bileiqi, 2019
风云四号静止卫星（FY-4）上携带的闪电成像仪（LMI,lightning mapping imager）可以很好地实时监测对流层的闪电活动情况,但由于目前公开的1 min事件产品（event）并不对应于一次次的闪电（flash）,因此需要进行"聚类",也就是将事件产品（event）转化为闪电（flash）数据。为了得到适合LMI的闪电聚类算法,本文选取了LMI空间像元分辨率不同的两个典型区域,一个是像元分辨率约为8 km的西南地区（东经,北纬）,另一个是像元分辨率约为12 km的东北地区（东经,北纬）,
陈亚芳, 张其林, 张晓黄, 周仿荣, 沈志, 高振宇   +5 more
doaj  

19th Meeting of the European Neurological Society. Milan, Italy, 5-9 June 1999. Abstracts. [PDF]

J Neurol, 1999
europepmc   +1 more source

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On-Orbit Response Characteristics of Fengyun-4A Lightning Mapping Imager (LMI) and Their Impacts on LMI Detection

Journal of Atmospheric and Oceanic Technology, 2023
Abstract The effects of the response characteristics of the Fengyun-4A Lightning Mapping Imager (LMI) on its detection capability were studied using the raw event data of LMI in 2020. The simultaneous observation data of the Lightning Imaging Sensor (LIS) on the International Space Station (ISS) were used to evaluate the LMI detection capability.
Wen Hui, Wenjuan Zhang, Weitao Lyu, Yijun Zhang, Pengfei Li   +4 more
openaire   +1 more source