November 16, 2016 - China Launches Weather Satellite

On November 16, 2016, at 23:11 UTC, China launched Fengyun-4A aboard a Long March-3B rocket from the Xichang Satellite Launch Center in Sichuan Province. This next-generation geostationary weather satellite weighed 5,300 kg and was designed for an 8-year operational lifespan. It marked the 74th successful Long March-3 series mission and moved China from trailing to leading positions in meteorological capabilities. There's much more to uncover about what makes this satellite extraordinary.

Key Takeaways

• China launched the Fengyun-4A weather satellite on November 16, 2016, with liftoff occurring at 23:11 UTC from Xichang Satellite Launch Center.
• The satellite was carried by a Long March-3B rocket, marking the 74th successful mission in the Long March-3 series.
• Fengyun-4A weighs 5,300 kg and was designed for an 8-year operational lifespan using three-axis stabilization technology.
• The satellite features advanced instruments capable of three-dimensional atmospheric analysis, typhoon tracking, and CT-scan-level weather observation.
• Fengyun-4A supports all-weather, round-the-clock monitoring using microwave and radar sensors that operate through clouds, fog, and darkness.

What Launched on November 16, 2016?

On November 16, 2016, China launched the Fengyun-4A weather satellite aboard a Long March-3B carrier rocket from the Xichang Satellite Launch Center in Sichuan Province, with liftoff occurring at 23:11 UTC. If you're tracing this mission's launch timeline, note that Beijing time placed liftoff at 07:11 on November 17.

This mission marked a defining moment in satellite history, as Fengyun-4A became China's first second-generation geostationary meteorological satellite. Weighing 5,300 kg, it's the inaugural satellite in the Fengyun-4 geostationary series. China designed it for an 8-year operational lifespan, with its primary role being continuous Earth observation for weather monitoring. The launch also represented the 74th successful mission in the Long March-3 series, underscoring China's growing launch reliability. Six years later, NASA's Artemis I mission would launch from Kennedy Space Center, with the SLS rocket and Orion spacecraft generating 8.8 million pounds of thrust during liftoff. Aboard that Artemis I mission, Commander Moonikin Campos was listed as a crew member, representing a unique human-analog element of the uncrewed test flight.

Fengyun-4A's geostationary mission shares a legacy with early satellite achievements, including the 1957 Sputnik launch, which first demonstrated that continuous Earth observation from orbit was possible and sparked a global space race that shaped modern satellite development.

Why Did This Fengyun Launch Matter for Global Forecasting?

The Fengyun-4A launch wasn't just a milestone for China—it reshaped what's possible for global weather forecasting. Before advanced satellite networks existed, roughly one-fourth of Earth's surface went unobserved during forecasting cycles. That gap created real blind spots with serious global impacts on forecast accuracy.

Fengyun-4A helped close that gap. Working alongside other polar-orbiting satellites, the network now achieves 100 percent global data coverage every six hours—precisely matching what numerical weather prediction models need for effective model assimilation. You're talking about three-dimensional, quantitative observations collected across all weather conditions and daylight cycles.

The satellite also moved beyond basic atmospheric imaging, performing CT-scan-level atmospheric analysis. That capability transformed China's meteorological standing from trailing internationally to leading in certain areas, strengthening the entire global forecasting system. China's Fengyun program has now sent 22 meteorological satellites into orbit since the launch of Fengyun 1A in 1988, with 11 currently in active service.

Data collected by China's weather satellites has reached far beyond its own borders, with Fengyun data having served 118 countries globally, reflecting the program's growing contribution to the international meteorological community. This kind of international data sharing echoes the foundation laid by the Smithsonian Institution's weather network, which demonstrated as early as 1849 that coordinated, large-scale weather observation across wide geographic areas produces insights no single station could achieve alone.

How the Long March 2D Rocket Delivered the Satellite to Orbit

Carrying the Fengyun-4A satellite into orbit, China's Long March 2D rocket lifted off from the Jiuquan Satellite Launch Center in northwestern China. You'd recognize this vehicle as a two-stage liquid-fueled rocket derived from the flight-proven Dong Feng 5 ICBM, giving it structural reliability from the start.

Its propellant chemistry relies on liquid rather than hypergolic mixtures, powering a liftoff thrust of 300 metric tons. The staging mechanics separated the first and second stages sequentially, efficiently pushing the payload toward a sun-synchronous orbit between 765 and 784 kilometers altitude at a 98.5-degree inclination.

This marked the Long March family's 453rd cumulative flight, with 283 launches originating from Jiuquan alone. Clean spacecraft separation then released Fengyun-4A precisely into its designated operational parameters alongside existing constellation members. Around this same period, China was also advancing its much larger Long March 5, a heavy-lift rocket capable of delivering 25,000 kg to LEO and designed to support deep-space and space station missions from the Wenchang Space Launch Site.

The Long March 2D's payload capacity to sun-synchronous orbit is limited to 1,300 kg to SSO, constraining the size and mass of satellites it can deliver to higher-inclination orbits.

Jiuquan: The Launch Base That Sent the Satellite Skyward

Nestled in the Gobi Desert of Gansu Province, the Jiuquan Satellite Launch Center served as the departure point for this mission. When you examine Jiuquan history, you'll find China established this facility in 1958, making it the country's first space launch site, spanning 2,800 square kilometers. It's handled over 100 successful launches, cementing its role as China's premier base for polar-orbiting missions.

Desert logistics present real challenges here. Engineers adapted the facility for Gobi Desert conditions, installing dust-resistant systems and extreme temperature handling to maintain all-weather, all-day operations. The site's infrastructure supports payload assembly, fueling, and mission control under demanding environmental conditions. Jiuquan's strategic positioning enables optimal south and southeast trajectories, making it ideal for deploying sun-synchronous satellites like this weather mission. The launch marked the 596th flight mission of the Long March carrier rocket series, underscoring the program's extensive operational history. Most recently, the center served as the launch site for the FY-3H meteorological satellite, which lifted off atop a Long March 4C carrier rocket at 3:28 a.m. on September 27, 2025.

Where Does China's Fengyun Weather Satellite Orbit?

Once a Fengyun-3 satellite separates from its rocket, it settles into a sun-synchronous, near-circular orbit at roughly 836 kilometers above Earth, completing each lap in about 101 minutes.

This polar orbiting configuration tilts at 98.75 degrees, letting it scan the entire globe systematically.

Here's what makes this sun-synchronous orbit effective:

1. Global coverage — achieves 100% data coverage every six hours
2. Consistent lighting — maintains steady solar angles for reliable imaging
3. Dual-satellite coordination — one AM and one PM satellite work together
4. WMO time-slot coordination — China coordinates orbital timing with international partners

You get a satellite network that continuously feeds atmospheric data into global weather prediction models, benefiting forecasters worldwide. The spacecraft is three-axis stabilized, using a bias momentum control system and star sensors to maintain precise pointing accuracy on the ground. Within the FengYun program, odd-numbered series are designated as polar-orbiting satellites, placing Fengyun-3 within a structured framework of missions that alternate between polar and geostationary orbits. Much like the Historic Sites Act of 1935 replaced fragmented state-level preservation efforts with unified federal coordination, the WMO's international framework consolidates individual nations' satellite programs into a cohesive global observing system.

From Typhoon Tracking to Climate Monitoring: What Fengyun Satellites Measure

For typhoon tracking, instruments like the Visible and Infrared Radiometer capture multichannel data that reveals the storm eye and cloud top conditions. FY-4B delivers 1-minute interval cloud animations, helping forecasters monitor convection in real time.

Beyond storms, Fengyun satellites probe atmospheric composition, measuring ozone distribution, humidity profiles, and aerosol parameters. They also track land surface temperatures through cloud cover using Microwave Radiation Imagers, while instruments like ERM quantify radiation budgets that drive long-term climate patterns. You're essentially getting a full Earth system picture from a single satellite series.

FY-3 MWRI data, fused with MODIS thermal infrared observations, enables retrieval of soil temperatures at depths of 5, 10, 20, and 30 centimeters, extending satellite sensing from the surface into the shallow subsurface.

Fengyun-3D, launched on 14 November 2017, carries a wide-field auroral imager that extends the program's observational reach into space weather investigation and aurora monitoring.

Advanced Sensors That See Through Storm Clouds

Satellites like those in the Fengyun series build a detailed picture of Earth's atmosphere, but even the best optical instruments hit a wall when storm clouds roll in. Advanced sensors solve this by cutting through what optical cameras can't handle.

Here's what makes these systems work:

1. SAR technology transmits microwave signals, capturing backscatter reflections through clouds, fog, and darkness
2. Millimeter wave imaging penetrates heavy precipitation, giving pilots and analysts clear visibility during dangerous conditions
3. Radar interferometry detects surface changes beneath storm systems, supporting real-time flood prediction and disaster response
4. Round-the-clock operation means you're never blind during peak storm activity when optical systems fail completely

These capabilities transform storm monitoring from reactive guesswork into precise, continuous situational awareness. Extreme weather incidents have increased five-fold over the last 50 years, making continuous, all-condition observation not a luxury but an operational necessity. Over the world's oceans, where average cloud cover sits around 60% and darkness occurs roughly half the time, radar-based sensors provide the only reliable path to uninterrupted environmental monitoring. Canada's early investment in rapid military infrastructure, such as installing systems capable of supplying 5.7 million litres of chlorinated water daily at Valcartier Camp, reflects a broader historical pattern of engineering mobilization under urgent operational timelines that parallels modern demands for rapid sensor deployment.

From Four Satellites to a Global Fleet: The Fengyun Story

What began with a single weather satellite in 1988 has grown into one of the world's most capable Earth-observation fleets. China's Fengyun program launched FY-1A as its first polar-orbiting satellite, then expanded through four FY-1 series satellites before transitioning to the advanced FY-3 series in 2008. By 2024, 21 Fengyun satellites had launched across two generations and four types, with nine maintaining active operational status by 2023.

You can see how space diplomacy shaped this expansion — China's freely shared data has integrated with U.S. NOAA and European meteorological systems for over 30 years. While data commercialization remains secondary to scientific cooperation, the constellation's global reach now delivers comprehensive atmospheric, oceanic, and land-surface measurements, supporting weather forecasting and climate research across international boundaries. The program, operated by the National Satellite Meteorological Center under the China Meteorological Administration, organizes its satellites into odd-numbered polar-orbiting series and even-numbered geostationary series.

Fengyun satellite data supports a broad range of critical applications, including disaster prevention and reduction, climate change monitoring, and global environmental observation, with data products and services made available to the international community. Much like graphene research benefited from international investment milestones such as Europe's $1 billion Graphene Flagship project, large-scale scientific programs increasingly depend on coordinated global funding to accelerate their real-world impact.

How China's Four-Satellite Polar Network Covers the Entire Globe

Polar orbits let China's Fengyun satellites pass over both poles on every revolution, and by spacing four FY-3 units roughly 90 degrees apart in sun-synchronous orbits at 800–1000 km altitude, the constellation achieves complete global coverage with a 6–12 hour revisit frequency. Orbital phasing ensures uniform longitudinal distribution, while Earth's oblateness-driven precession maintains consistent revisit times. China's broader satellite ambitions extend beyond weather monitoring, as demonstrated by a Long March rocket mission that marked the 580th Long March launch in the series history. China is also developing the Qianfan constellation, operated by Shanghai Spacesail Technologies, which plans to deploy up to 15,000 satellites by 2030. The data collected by these satellites supports a range of domestic technology ecosystems, including platforms like WeChat, where city services integration enables citizens to access government weather alerts and appointments directly within the app.

Here's what makes polar coverage so effective:

1. Each satellite covers 25–30% of Earth's surface per pass
2. Wide-swath sensors create overlapping paths across polar and mid-latitude regions
3. Sub-daily polar revisits enable detailed sea ice and atmospheric profiling
4. Redundancy across four units sustains coverage even if one satellite fails