Results 11 to 20 of about 138,786 (104)

Thermal Deformation Correction for the FY-4A LMI

Remote Sensing
Affected by solar radiation in space, the FY-4A Lightning Mapping Imager (LMI) detection array exhibits daily periodic thermal expansion and contraction, leading to deviations in lightning positioning accuracy.
Yuansheng Zhang, Xiushu Qie, Dongjie Cao, Shanfeng Yuan, Dongfang Wang, Hongbo Zhang, Dongxia Liu, Zhuling Sun, Mingyuan Liu, Kexin Zhu, Rubin Jiang, Jing Yang   +11 more
doaj   +3 more sources

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   +3 more sources

Corrected event dataset of FengYun-4A Lightning Mapping Imager (FY-4A LMI), 2019–2023 [PDF]

Earth System Science Data
The Lightning Mapping Imager (LMI) aboard FengYun-4A (FY-4A) has accumulated substantial observational data. To address remaining systematic geolocation deviations, we propose a correction method using World Wide Lightning Location Network (WWLLN) as a ...
Y. Zhang, Y. Zhang, X. Qie, X. Qie, R. Jiang, D. Cao, J. Yang, D. Wang, M. Liu, D. Liu, Z. Sun, H. Zhang, S. Yuan   +12 more
doaj   +2 more sources

FY-4A LMI Observed Lightning Activity in Super Typhoon Mangkhut (2018) in Comparison with WWLLN Data

Journal of Meteorological Research, 2020
Using lightning observations from the Fengyun-4A Lightning Mapping Imager (FY-4A LMI), best-track data from the Shanghai Typhoon Institute, bright temperature (TBB) data from Himawari-8 satellite, and composite reflectivity (CR) data from the South China radar network, we investigate the spatiotemporal distribution of lightning activity and convective
Wenjuan Zhang, Wen Hui, Weitao Lyu, Dongjie Cao, Pengfei Li, Dong Zheng, Xiang Fang, Yijun Zhang   +7 more
openaire   +2 more sources

Estimation of the PM2.5 and PM10 Mass Concentration over Land from FY-4A Aerosol Optical Depth Data

, 2021
The purpose of this study is to estimate the particulate matter (PM2.5 and PM10) in China using the improved geographically and temporally weighted regression (IGTWR) model and Fengyun (FY-4A) aerosol optical depth (AOD) data.
Xue, Yong
core   +1 more source

FY-4A/AGRI Sea Surface Temperature Product and Quality Validation

, 2023
Fengyun-4A (FY-4A) is the first satellite of China's second-generation geostationary orbit meteorological satellites. The advanced geostationary radiation imager (AGRI), a multiple channel radiation imager, is one of the primary payloads onboard FY-4A ...
Cui Peng, Lu Feng, Xiao Meng, Wang Sujuan   +3 more
core   +1 more source

Accuracy Validation of FY-4A Temperature Profile Based on Microwave Radiometer and Radiosonde

, 2023
To take full advantage of FY-4A temperature profile data to understand the evolutions of weather processes and nowcasting, based on the atmospheric temperature profile of radiosonde, microwave radiometer and FY-4A satellite from 1 January 2021 to 31 ...
Zhou Houfu, Wang Hong, Xia Yinan, Wang Chen   +3 more
core   +1 more source

Validation of FY-4A Temperature Profiles by Radiosonde Observations in Taklimakan Desert in China

, 2023
The atmospheric temperature profiles (ATPs) retrieved through the geostationary Interferometric Infrared Sounder (GIIRS) onboard the FY-4A satellite (GIIRS/FY-4A) can effectively fill the gap of the scarce conventional sounding data in the Taklimakan ...
Yufen Ma, Ailiyaer Aihaiti, Ali Mamtimin, Juanjuan Liu, Lan Xu   +4 more
core   +1 more source

Impacts of FY-4A Atmospheric Motion Vectors on the Henan 7.20 Rainstorm Forecast in 2021

, 2022
Atmospheric motion vectors (AMVs) derived from images of the geostationary satellite, Fengyun-4A (FY-4A), can provide high-spatiotemporal-resolution wind observations in the atmospheric middle and upper levels.
Yanhui Xie, Ruixia Liu, Jiancheng Shi, Min Chen, Shuting Zhang   +4 more
core   +1 more source

Comparison of FY-4A/AGRI SST with Himawari-8/AHI and In Situ SST

, 2023
The Fengyun-4A (FY-4A) satellite is a new-generation geostationary meteorological satellite developed by China. The advanced geosynchronous radiation imager (AGRI), one of the key payloads onboard FY-4A, can monitor sea surface temperature (SST).
Chang Yang, Xiaohui Sun, Lei Guan
core   +1 more source