March 13, 2010 - China Launches New Weather Satellite

On March 13, 2010, China launched the Fengyun-2 weather satellite into geostationary orbit aboard a Long March 3A rocket from Xichang Satellite Launch Center. It's positioned roughly 35,786 km above the equator, giving it continuous coverage over the Asia-Pacific region and Indian Ocean. It tracks typhoons, monitors extreme weather, and shares data with over 80 countries through WMO cooperation. There's far more to this satellite's capabilities and impact than meets the eye.

Key Takeaways

• China launched a new Fengyun-2 weather satellite on March 13, 2010, using a Long March 3A rocket from Xichang Satellite Launch Center.
• The satellite was placed in geostationary orbit approximately 35,786 km above the equator for continuous Earth observation.
• It carried the S-VISSR instrument, providing visible, infrared, and water vapor imagery across vast regional coverage.
• The launch strengthened meteorological monitoring of typhoons and extreme weather across the Asia-Pacific and Indian Ocean regions.
• Data was shared with 80+ countries, integrating the satellite into the WMO's global observation network.

Why China Launched the Fengyun-2 Satellite on March 13, 2010

China launched the Fengyun-2 satellite on March 13, 2010, to strengthen its meteorological capabilities across the Asia-Pacific region and beyond. The mission timing aligned with growing demand for reliable weather data, as the satellite would monitor typhoons, floods, and extreme weather systems threatening millions across the region.

You can see how international diplomacy played a direct role — the World Meteorological Organization formally requested China reposition the satellite to serve a broader geographic area. This prompted an orbital adjustment from 86.5 to 79 degrees east longitude, extending coverage across the Indian Ocean and most of Africa.

The launch also supported data sharing with 80+ countries, reinforcing China's commitment to global meteorological cooperation and helping developing nations lacking their own advanced weather monitoring infrastructure. To further support recipient nations, China has established ground stations in countries including Pakistan, Indonesia, Thailand, Iran, and Mongolia, with plans to upgrade facilities and provide technician training in those locations. This parallels earlier milestones in satellite history, such as Canada's 1974 Anik A1 experiments, which demonstrated how a single orbital platform could deliver reliable communications to remote and underserved regions for the first time.

The satellite carries a scanning radiometer and space environment monitor onboard, enabling it to deliver real-time cloud images, water vapor imagery, and space weather information to support accurate forecasting across its coverage area.

The Fengyun-2 Series: China's Geostationary Weather Program

The Fengyun-2 series is China's backbone geostationary weather program, developed by the Shanghai Academy of Spaceflight Technology for the China Meteorological Administration. Built on the Dong Fang Hong 2 platform, it's operated eight spin-stabilized satellites since 1997, with FY-2H completing the series in 2018.

You'll find the satellites parked at 35,000 km above the equator, delivering constant regional monitoring. China's pursued space diplomacy through this program by sharing data with NOAA and Eumetsat and repositioning FY-2H westward to 79°E at WMO's request, filling a critical Indian Ocean coverage gap.

Through data commercialization, China markets openly accessible satellite data to users equipped with receivers. The successor FY-4 series, launched from 2016, offers upgraded imaging, lightning detection, and infrared sounding capabilities. FY-2H carries a Space Environment Monitor instrument designed to support environmental monitoring alongside its weather imagery functions.

Each FY-2 satellite stands 4.5 meters tall and spins at 100 rpm for stabilization, with a mass of approximately 1,380 kg powered by solar cells and batteries.

What the Fengyun-2 Satellite Does From 35,000 Km up

Parked 35,786 km above the equator, a Fengyun-2 satellite does far more than snap cloud photos. Its S-VISSR instrument handles cloud mapping at 1.25 km visible resolution and infrared sensing at 5 km resolution, giving you detailed day-and-night coverage across oceans, land, and atmosphere.

You're also getting real-time water vapor distribution, sea surface temperatures, radiation budgets, and vegetation monitoring. The satellite tracks tropical cyclones and weather systems over Africa, Asia, and the Middle East, imaging localized events like typhoons every six minutes. It collects data from ground-based meteorological and hydrological platforms, then broadcasts S-VISSR and WEFAX imagery openly across its coverage area. On top of that, its space environment monitor detects solar protons and X-rays, supporting space weather forecasting.

The FY-2 series uses a spin-stabilized design, rotating at approximately 100 rpm with a despun antenna platform to maintain its orientation while continuously scanning Earth's disk every 30 minutes. Each satellite is launched aboard a Long March 3A rocket, which first delivers the spacecraft into a geosynchronous transfer orbit before an onboard apogee motor raises it to its final geostationary position.

What's Actually Inside the Fengyun-2 Satellite

Inside the Fengyun-2 satellite, you'll find a tightly integrated suite of instruments built around the Stretched Visible and Infrared Spin Scan Radiometer (S-VISSR).

The payload layout differs between models — FY-2A/B carry three channels, while FY-2C through FY-2H expand to five, adding a mid-infrared channel at 3.5–4.0μm.

The instrument internals also include an X-ray detector and particle detector for solar monitoring and space hazard warnings.

A UHF/S-band transponder handles 133 data collection channels across domestic and international operations.

Structurally, the satellite spins at 100 RPM for stabilization, measures 2.1 meters in diameter, and stands 4.5 meters tall on-station.

Solar arrays and batteries power everything, while an FG-36 apogee motor — jettisoned after use — handles orbital insertion. The disc image scanning cycle is set at 30 minutes per cycle, providing regular full-Earth imagery for meteorological analysis. Much like Bell's telephone, which relied on electrical current variations to carry information, the S-VISSR converts detected radiation into varying electrical signals to transmit atmospheric data. The entire FY-2 program has been built by the Shanghai Institute of Satellite Engineering since development began in 1980.

The Long March 3A Rocket That Carried Fengyun-2 to Orbit

Getting that sophisticated sensor package into geostationary orbit required a capable launch vehicle, and China's Long March 3A — officially designated Chang Zheng 3A or CZ-3A — was up to the task.

This three-stage rocket's design reflects deliberate engineering upgrades over its predecessor. The first stage stretches 23.075 meters, longer than the original Long March 3's 20.219-meter configuration. The third stage now carries two YF-75 engines instead of a single YF-73, boosting payload capacity to 2.3 tonnes toward geosynchronous orbit.

An upgraded computer system sharpens the launch mechanics, giving engineers tighter control throughout the ascent.

The rocket lifted off from Launch Complex 3 at Xichang Satellite Launch Center, China's dedicated facility for GTO missions, exactly where you'd expect a Fengyun-series deployment to originate. The Long March 3A itself was developed as a direct improvement over the original Long March 3, which suffered repeated third-stage failures tied to gas generator issues that plagued several missions throughout its operational history. The launch vehicle was provided by CASC, with a listed price of $69.70 million per mission.

Much like the overhead trolley wire system refined by Frank J. Sprague that standardized electric transit across North America, the Long March 3A represented a decisive technological standardization for China's geostationary launch program, replacing unreliable earlier configurations with a dependable workhorse platform.

How Fengyun-2 Advanced China's Meteorological Satellite Program

The Fengyun-2 program transformed China's meteorological capabilities from the ground up, tracing its roots to development work that began in the 1980s under the China Academy of Space Technology. Since FY-2A's 1997 launch, eight satellites have monitored over 470 typhoons across the western Pacific and South China Sea, cutting 24-hour track prediction deviation to under 70 km by 2015.

You'll find that data continuity across strategically positioned orbital slots—79°E, 86.5°E, 105°E, and beyond—enabled uninterrupted Earth observation while supporting regional coordination with over 80 countries. The series also integrated into WMO's global observation network, strengthening international weather monitoring. Like INTELSAT I, which demonstrated that geostationary orbit could provide continuous, uninterrupted coverage across vast regions, the Fengyun-2 satellites in geosynchronous positions proved that sustained orbital presence was essential to reliable Earth observation.

With FY-4A already boosting observation efficiency 20 times over, the FY-2 program leaves a well-established foundation for China's next-generation meteorological satellite capabilities.

How Fengyun-2 Data Improved Typhoon Warnings Across the Region

Beyond tracking storm paths, Fengyun-2's data has fundamentally sharpened typhoon warnings across the Asia-Pacific, giving forecasters tools that weren't available a generation ago. Early detection capabilities now let you see typhoon structures forming in real time, while regional coordination between 34 registered countries strengthens collective response. Since its first launch in 1988, the Fengyun program has grown to a total of 21 satellites across two generations, establishing a long track record of continuous atmospheric monitoring.

Here's what Fengyun-2 delivers for improved warnings:

1. 72-hour landfall predictions for severe cyclones threatening Pacific island nations, giving communities critical preparation time.
2. 83% detection rate of severe weather events through integrated satellite systems combining optical and microwave imaging.
3. Advance warnings spanning hours to days, covering path and intensity forecasts across vulnerable western Pacific zones.

These capabilities feed directly into MAZU's AI early warning system, extending data services to 133 countries and doubling international users since 2021. Ongoing capacity building efforts include training targets of 2,000 meteorological specialists over the next two years to strengthen early warning expertise across partner nations.