You may not know that from September 25th to 28th, 2017, when you opened WeChat, the "Earth" on the launch page happened to be shot from above our motherland.

　　And this telephoto close-up of the earth is from the most powerful geostationary orbit "earth photographer" - Fengyun 4A star.

　　You should not be unfamiliar with the name "Fengyun".

It is a complete set of meteorological satellite systems independently developed by my country.

Since its development in 1970, the Fengyun series of meteorological satellites started from scratch and developed rapidly, eventually helping my country become one of the few countries in the world that has both polar-orbiting and geostationary-orbiting meteorological satellites.

　　Fengyun satellite in orbit renderings

　　The Fengyun family is a big family.

　　Up to now, my country has successfully launched a total of 19 Fengyun meteorological satellites of "two generations and four types".

Among them, Fengyun-1 and Fengyun-3 belong to polar-orbiting satellites. They fly around the earth through the north and south poles and can conduct global observations; Fengyun-2 and Fengyun-4 belong to geostationary orbit satellites. Weather detection in my country and surrounding areas.

　　Weather forecasting, climate forecasting, disaster monitoring, scientific research, in many important fields, the members of the Fengyun family are very skilled, their business covers nearly 100 industries, and they can continue to provide data products and services to 118 countries and regions around the world, no wonder they are called For "people star" and "Chinese star".

　　Every member of the Fengyun family possesses unique skills.

　　Fengyun-3E star

　　On July 1, 2021, accurate weather forecast was provided for the celebration of the 100th anniversary of the founding of the Communist Party of China; two and a half months later, it was raining 10 minutes after the opening ceremony of the "14th National Games" in Shaanxi... Chen Xiaojie, Product Assurance Manager of the No. 2 Weather Satellite, said: "These 'minute-level' weather support services all depend on the Fengyun-4B satellite launched on June 3, 2021, which carries a fast imager satellite payload that can achieve a 1-minute interval of 250. High space-time observations with meter resolution can provide strong support for refined monitoring and the accurate implementation of human shadow operations."

　　Also participating in the "14th National Games" meteorological service is the Fengyun-3E star known as "Dawn Star": it observes at dawn and dusk, which can make up for the blank of satellite observation data in the 6-hour assimilation window of global numerical weather forecast, and is effective. Improve the accuracy and timeliness of weather forecasts; the low-light observation equipment it carries can "see clearly" the wind and clouds on the earth even in the case of insufficient light; the solar omnispectroscope it carries can realize the omnipotence of the corona. Spectral observations, the outer structures of the sun that have the most direct impact on the Earth's environment, will provide scientists with more comprehensive information on the causes of changes in Earth's climate and weather.

　　Fengyun-4 satellite

　　Let's talk about the "photographer" of the WeChat splash screen - Fengyun 4A star.

It images my country and surrounding areas every 5 minutes, with a maximum resolution of 500 meters; it is the first time in the world that vertical detection instruments and imaging observation instruments work on the same stage. It is called the "strength responsibility" of China's meteorological satellite industry.

　　The future of the Fengyun family is huge!

　　It is reported that before 2035, my country will build a third-generation Fengyun meteorological satellite comprehensive observation system to realize satellite-earth-inter-satellite collaborative intelligent observation, and the global observation data acquisition and processing timeliness will reach within 1 hour.

"The third-generation meteorological satellite will achieve accurate forecasting, meet the needs of all-element and refined meteorological observation, and play a leading role in meteorological forecasting, climate forecasting, atmospheric chemistry, ecological environment monitoring, and disaster prevention and mitigation." China Aerospace Science and Technology The blueprint drawn by Chen Xiaofei, the chief designer of the Fengyun-3 satellite of the Group's Eighth Academy, is exciting.

　　There are thousands of worlds, thousands of weather, and see how the "wind and cloud" changes...

　　Producer: Zhang Ning Liao Hui

　　Planning: Li Fangzhou Li Yimeng

　　Voice: Zhang Yuexin

　　Editing: Dong Dazheng

　　Produced by: Guangming.com News Center

　　Interview: Zhang Xiaohua, trainee reporter of Guangming Daily, Zhang Lei, reporter of Guangming Daily