Has Fengyun-4 satellite been officially delivered for use?

News on September 25, learned from the Administration of Science, Technology and Industry for National Defense and the China Meteorological Administration: my country’s new generation geostationary orbit meteorological satellite Fengyun-4 was delivered to users and put into use on the 25th. The comprehensive technical performance of the Fengyun-4 satellite is internationally leading, and its delivery marks the upgrading of my country's geostationary orbit meteorological satellite observation system.

The Fengyun-4 satellite has realized the leap from "running parallel" to "leading" in my country's geostationary orbit meteorological satellites. The Fengyun-4 satellite has filled three international gaps, achieving the world's first geostationary orbit interferometric hyperspectral atmospheric detection; the world's first installation of a radiometer, detector, and lightning meter on a single platform, working around the clock; and the world's first geostationary orbit microwave Detection technology verification, the first 425GHz frequency band detection. Xu Jianmin, an academician of the Chinese Academy of Engineering, said that the image quality of the visible light cloud map with a maximum resolution of 500 meters provided by the Fengyun-4A star has been significantly improved, and it also has the ability to analyze water vapor transport at different levels in heavy rain weather. It is expected to be useful for front-line forecasters to judge weather and numerical weather forecasting. level will play a significant role.

During the on-orbit test, the Fengyun-4 satellite conducted real-time targeted application monitoring of disaster weather such as typhoons, dust, heavy rain and strong convection, as well as environmental and ecological issues such as cyanobacteria blooms and haze. Severe dust in the north in May, heavy rainstorms in North China in June, continuous precipitation in the south from the end of June to early July, and early warnings of typhoons "Miaobai" and "Namadu" provided strong support. The application results show that the Fengyun-4 satellite's multi-channel scanning imaging radiometer can more clearly identify the detailed texture of sand and dust and the small- and medium-scale cloud structures inside typhoons, and analyze water vapor transport at different levels in heavy rain weather; the application of lightning imagers in monitoring severe convective weather There are good instructions. Currently, the Fengyun-4 satellite has been included in the global Earth observation meteorological satellite sequence by the World Meteorological Organization and is expected to have trial operation and service capabilities by the end of 2017.

As of now, my country’s eight Fengyun meteorological satellites are operating in orbit, of which six are used for business operations. The Fengyun series of meteorological satellites provide users with high-timeliness meteorological satellite data in 81 countries and regions, and cover 37 countries and regions along the “One Belt and One Road”. They are widely used in meteorological forecasting, disaster prevention and reduction, scientific research and other fields.

Our country has become one of the few countries in the world that has both polar orbiting and geostationary orbiting meteorological satellites. The application of satellite data in my country is gradually moving from simply “looking at pictures” to quantitative applications. Fengyun-3's microwave hygrometer, microwave imager and global occultation atmospheric sounder data were successfully entered into the assimilation system of the China Meteorological Administration's numerical forecasting business system, improving the forecasting effect of typhoons, heavy rains and other disastrous weather systems. The benefits of meteorological satellites in serving economic and social development are accelerating.