# DQ-2 / Daqi-2
*missions*

## Specifications
- **operator**: cnsa
- **actual launch**: 2026-04-17
- **current status**: operational
- **orbit type**: SSO 705 km
- **entity type**: mission
- **last verified date**: 2026-06-04
- **verified by**: agency-doc
- **claim status**: unclaimed
- **provider**: cnsa
- **attributes**: {"operator":"cnsa","actual_launch":"2026-04-17","current_status":"operational","orbit_type":"SSO 705 km"}

## Editorial
DQ-2 / Daqi-2 is a Chinese atmospheric observation satellite operated by CNSA and built by SAST (Shanghai Academy of Spaceflight Technology). It launched on 17 April 2026 into a 705 km sun-synchronous orbit.[^orbitaltoday-daqi2][^wmo-oscar-dq2] The satellite carries ACDL, a high-spectral-resolution lidar instrument that profiles aerosol and cloud distributions vertically, alongside a multi-instrument payload for comprehensive atmospheric characterisation.[^eoportal-daqi]

The Daqi-2 payload includes the Directional Polarisation Camera-2, the Particulate Observing Scanning Polarimeter, the Environment Monitoring Instrument-2, the Wide Spectral Imager, and the Greenhouse-gases Absorption Spectrometer-2 (GAS-2), the last of which was added on Daqi-2 to measure CO2, methane, carbon monoxide, and nitrous oxide concentrations.[^eoportal-daqi] Daqi-2 extends the atmospheric monitoring capability established by its predecessor DQ-1, adding greenhouse gas column measurement alongside the aerosol and air quality observations common to both missions.[^eoportal-daqi]

## Compositional position
- DQ-2 / Daqi-2 --[mission_payloads]--> acdl (products)
- DQ-2 / Daqi-2 --[related-topic]--> air-quality (topics)
- DQ-2 / Daqi-2 --[related-topic]--> co2 (topics)
- DQ-2 / Daqi-2 --[related-topic]--> methane (topics)
- DQ-2 / Daqi-2 --[related-topic]--> greenhouse-gas-flux (topics)

## Sources
- [eoportal-daqi] | Daqi-1/-2 (DQ-1/-2) mission profile, eoPortal | https://www.eoportal.org/satellite-missions/daqi-1-2 | tier=community | accessed=2026-06-04
- [orbitaltoday-daqi2] | Chinese Launch Daqi-2 On Long March-4C Rocket, Orbital Today | https://orbitaltoday.com/2026/04/21/chinese-launch-daqi-2-on-long-march-4c-rocket/ | tier=community | accessed=2026-06-04
- [wmo-oscar-dq2] | WMO OSCAR satellite record: DQ-2 | https://space.oscar.wmo.int/satellites/view/dq_2 | tier=agency-doc | accessed=2026-06-04

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Source: https://eo-atlas.org/missions/daqi-2
Maintainer: SpectraWorks B.V. (CC-BY 4.0)