EO·Atlas
FY-4A
FY-4A (Fengyun-4A) is China's first third-generation geostationary meteorological satellite and the initial flight unit of the FY-4 series, operated by the China Meteorological Administration. The satellite launched in December 2016 and is currently stationed at 123.5 degrees East following a relocation in February 2025, with prior operational positions at 105 degrees East and 86.5 degrees East.[1][2]
The Earth-observation sensor stack includes three instruments. The Advanced Geostationary Radiation Imager (AGRI) is a multi-channel visible and infrared imager supporting atmospheric motion vectors, sea surface temperature, precipitation estimates, and thermal anomaly detection.[3] The Geostationary Interferometric Infrared Sounder (GIIRS) provides atmospheric temperature and humidity profiles and tropospheric trace-gas column measurements.[4] The Lightning Mapping Imager (LMI) detects optical transients associated with lightning activity across the full disc.[5]
Ancillary payloads include the SEP/HEPS space-environment particle monitor and a data collection system (DCS). WMO OSCAR records the mission as operational as of April 2026.
Supply chain position
- [1]NSMC FY-4A satellite pageagency doc2026-06-14
- [2]WMO OSCAR satellite record: FY-4Aagency doc2026-06-14
- [3]WMO OSCAR instrument record: Advanced Geostationary Radiation Imageragency doc2026-06-14
- [4]WMO OSCAR instrument record: GIIRSagency doc2026-06-14
- [5]WMO OSCAR instrument record: Lightning Mapping Imageragency doc2026-06-14
- [6]NSMC FY-4A instruments pageagency doc2026-06-14
- [7]WMO OSCAR instrument record: SEP/HEPSagency doc2026-06-14
- [8]WMO OSCAR instrument record: Data Collection Service (FY)agency doc2026-06-14
How to cite this page
Plain text
FY-4A. EO-Atlas, SpectraWorks B.V. https://eo-atlas.org/missions/fy-4a (CC BY 4.0)
BibTeX
@misc{eoatlas:missions:fy-4a,
title = {FY-4A},
author = {{EO-Atlas}},
publisher = {SpectraWorks B.V.},
note = {CC BY 4.0},
url = {https://eo-atlas.org/missions/fy-4a}
}