Results 41 to 50 of about 145,077 (107)

A factorial spatial–temporal null-model framework for satellite–ground lightning fusion across Chinese marginal seas

International Journal of Applied Earth Observations and Geoinformation
Earth observation increasingly combines satellite and ground systems that record different manifestations of the same phenomenon. Spatial clustering and temporal persistence inflate apparent agreement, creating uncertainty over where joint products are ...
Nengxing Guo, Li Cai, Wenzhao Lu, Yingpu Xie, Yuheng Niu, Tao Li, Chun Zhao, Shanqiang Gu   +7 more
doaj   +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

Cross-satellite calibration of high-energy electron fluxes measured by FengYun-4A based on Arase observations [PDF]

, 2023
We use the High-energy Electron Experiments (HEP) instrument onboard Arase (ERG) to conduct an energy-dependent cross-satellite calibration of electron fluxes measured by the High Energy Particle Detector (HEPD) onboard FengYun-4A (FY-4A) spanning from ...
XiaoYu Wang, Xin Ma, AnQin Chen, JunHu Dong, XianKang Dou, BinBin Ni, Xing Cao, XiaoXin Zhang   +7 more
core   +1 more source

Evaluation and Improvement of FY-4A/AGRI Sea Surface Temperature Data

, 2023
The advanced geosynchronous radiation imager (AGRI) aboard the Chinese Fengyun-4A (FY-4A) satellite can provide operational hourly sea surface temperature (SST) product.
Yanwei Wu, Xin Hu, Quanjun He
core   +1 more source

General Comparison of FY-4A/AGRI With Other GEO/LEO Instruments and Its Potential and Challenges in Non-meteorological Applications [PDF]

, 2019
Meteorological satellites have become an indispensable tool for weather and land observation. Traditionally, geostationary (GEO) satellites have been used in operational meteorological services due to their high temporal resolution, while polar-orbiting ...
Lin Chen, Xiuzhen Han, Jiali Shao, Jie Chen, Peng Zhang, Lin Zhu, Shihao Tang, Ling Gao, Wei Zheng   +8 more
core   +1 more source

Impacts of Direct Assimilation of the FY-4A/GIIRS Long-Wave Temperature Sounding Channel Data on Forecasting Typhoon In-Fa (2021)

, 2023
In this paper, the Advanced Weather Research Forecast model (WRF-ARW) is used to investigate the potential impacts of assimilating the FengYun-4A (FY-4A) Geostationary Interferometric Infrared Sounder (GIIRS) long-wave temperature sounding channel data ...
Zeyi Niu, Wei Huang, Fuzhong Weng, Jia Zhu, Lei Zhang, Peiming Dong   +5 more
core   +1 more source

Optimization of the Local Split-Window Algorithm for FY-4A Land Surface Temperature Retrieval

, 2019
FY-4A is a second generation of geostationary orbiting meteorological satellite, and the successful launch of FY-4A satellite provides a new opportunity to obtain diurnal variation of land surface temperature (LST).
Hongchao Zuo, Wei Wang, Ni Guo, Lijuan Wang   +3 more
core   +1 more source

Analysis and Evaluation of the Layered Precipitable Water Vapor Data from the FENGYUN-4A/AGRI over the Southeastern Tibetan Plateau

, 2023
The Layered Precipitable Water Vapor (LPW) product derived from the Advanced Geosynchronous Radiation Imager (AGRI) onboard the first of the Chinese new generation geostationary satellite Fengyun-4A (FY-4A) has great significance for weather forecasting ...
Lin Han, Yunfan Song, Ge Wang, Xiaolong Huang   +3 more
core   +1 more source

Comparison of Machine-Learning Algorithms for Near-Surface Air-Temperature Estimation from FY-4A AGRI Data

, 2020
Six machine-learning approaches, including multivariate linear regression (MLR), gradient boosting decision tree, k-nearest neighbors, random forest, extreme gradient boosting (XGB), and deep neural network (DNN), were compared for near-surface air ...
Ke Zhou, Xiaobo Deng, Shenglan Zhang, Hailei Liu, Hao Wang   +4 more
core   +1 more source

Impacts of FY-4A AGRI Radiance Data Assimilation on the Forecast of the Super Typhoon “In-Fa” (2021)

, 2022
This study assessed the impact of assimilating the Fengyun-4A (FY-4A) Advanced Geosynchronous Radiation Imager (AGRI) observations on the Super Typhoon “In-Fa” event based on the Weather Research and Forecasting Data Assimilation (WRFDA ...
Dongmei Xu, Ruixia Liu, Feifei Shen, Xuewei Zhang   +3 more
core   +1 more source