DQ-1 Satellite Lidar Carbon Dioxide Concentration Under Cloud

Column-weighted carbon dioxide concentration data retrieved by the Atmospheric Environmental Monitoring Satellite (AEMS/DQ-1). The dataset includes high-precision XCO2 measurements from the ACDL lidar payload, with validation involving 170 overpasses for DQ-1 and 91 for OCO-2. The data was last updated on 2026-05-12.

Use Cases

• Validate satellite-based CO2 retrievals based on comparison with GAW observations mentioned in the description
• Analyze the impact of cloud cover on CO2 concentration measurements based on the described separation of above-cloud and whole-column signals
• Study near-surface CO2 concentrations based on the described XCO2 retrievals under cloud
• Compare lidar-based CO2 detection methods based on the described data from DQ-1/ACDL and OCO-2 satellites

Strengths

• High-precision CO2 column concentration measurements from a dedicated satellite lidar
• Validation involves 170 overpasses for DQ-1 and 91 for OCO-2
• Data enables separation of above-cloud and whole-column CO2 signals

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• Data may reflect geographic or temporal bias inherent to the satellite's orbit and validation sites

Provenance

Source

Haiyang Dou via figshare

Collection Method

Retrieved by the Aerosol and Carbon Detection LiDAR (ACDL) onboard the DQ-1 satellite.

Freshness

Last updated 2026-05-12 07:54:37; freshness should be verified