FY4Bs

FY4Bs is a Chinese geostationary meteorological satellite. It is the second satellite in China's Fengyun-4 series, following the launch of FY4A in 2016. FY4Bs was launched on June 3, 2021, from the Xichang Satellite Launch Center. It is operated by the China Meteorological Administration (CMA).

The primary mission of FY4Bs is to provide continuous and high-resolution meteorological observations. It carries a suite of advanced instruments designed for atmospheric sounding, weather imaging, and space environment monitoring. These instruments include a multi-channel scanning radiometer (MCR), a geostationary interferometric sounder (GIS), and a space environment monitor (SEM). The MCR provides visible and infrared imagery of clouds, land, and ocean surfaces, while the GIS offers vertical profiles of atmospheric temperature and humidity. The SEM monitors solar activity and its impact on the near-Earth space environment.

FY4Bs plays a crucial role in improving weather forecasting, climate monitoring, and disaster warning systems for China and surrounding regions. Its data supports a wide range of applications, including the detection of severe weather events like typhoons, heavy rainfall, and dust storms. The satellite's continuous monitoring capabilities enable meteorologists to track the development and movement of weather systems with greater accuracy and timeliness. FY4Bs is part of China's broader efforts to enhance its space-based Earth observation capabilities and contribute to global meteorological research and services.