Issue 46

China Launches Environmental Monitoring Satellite

15 Apr 2022: China launched a Long March (Chang Zheng) 4C from the Taiyuan Satellite Launch Center with the Daqi-1 environmental monitoring satellite. The Daqi-1 satellite, also known as the Atmospheric Environment Monitoring Satellite, is the first of a new series of Chinese satellites designed to monitor atmospheric …

15 Apr 2022: China launched a Long March (Chang Zheng) 4C from the Taiyuan Satellite Launch Center with the Daqi-1 environmental monitoring satellite. The Daqi-1 satellite, also known as the Atmospheric Environment Monitoring Satellite, is the first of a new series of Chinese satellites designed to monitor atmospheric gases and pollution. Launch Video.

– Daqi-1 launched into a sun-synchronous polar orbit, so that the satellite passes over any given point on the Earth’s surface at the same local mean solar time each day. This allows for consistent lighting angles for each observation.

– Daqi-1 orbits at 678×687.2km orbit, inclination is 98.13°.

– Daqi-1 is equipped with the world’s first space-based LIDAR (laser imaging, detection, and ranging) for detecting atmospheric aerosols as well as carbon dioxide. it can also measure nitrogen dioxide, sulfur dioxide, ozone, and fine particle pollution.

– The satellite features several instruments capable of LIDAR, high-precision scanning and multi-angle imaging polarimetry, UV hyperspectral atmospheric composition detection, and wide spectral imaging. Active and passive sensing methods are used.

– The satellite supports China’s efforts to combat its well-known air pollution issues, regulate its carbon dioxide emissions, and monitor global climate change.

– Daqi-1 is equipped to communicate with later Daqi-series satellites to coordinate observations. The next satellite in the series, Daqi-2, will conduct high precision greenhouse gas monitoring. Other Daqi satellites will follow.

Daqi-1 mission patch.

Long March 4C launch carrying Daqi-1.

Daqi-1 in Polar Orbit.

Daqi-1 spacecraft hardware.

Daqi-1 environmental monitoring satellite.

Daqi-1 spacecraft team.