| Trace gas column density (NO₂, O₃, HCHO) | O |
| Aerosol properties (AOD, SSA, particle size, distribution | O |
| Aerosol types | O |
| Aerosol profile | O |
| Trace gas vertical profile (NO₂) | O |
| Size / Weight | 600 × 530 × 670 (mm) / 20 kg |
| Wavelength | 280 – 795 nm |
| Measurements | Multi-axis, Direct-sun, Zenith-sky, Almucantar |
| Temperature | -30 –  40°C |
| Instrument | All-in-one (no A/C required) |

| Fieldwork | Power plant and Stack (Ulsan, Seoul, Haman, Gimhae, etc.) Port (Busan, etc.) |
|---|---|
| International Campaign | AISA-AQ (2023.12.13 – 2024.03.15) Participants: NASA, NIER, KMA, PKNU, Princeton University, etc. |
| CINDI-3 (2024.05.21 – 2024.06.24) Participants: BIRA, MPIC, KNMI |
CINDI-3 campaign, Netherlands, May 2024

Using wide spectral range

Particle size distribution

AOD, SSA

Refractive index
Fang, Thailand, 2019; Jeong et al., 2022 (ACP)
2021. 12. 19 – 2022. 01. 27
Rooftop of Anjung-eup Administrative Welfare Center, Pyeongtaek-si, Rep of Korea
Retrieval of NO₂ profile

Distance between in-situ and AQ-profiler
·Anjunguep: 0.1 m
·pyeongtaekhang: 7.8 km
Validation via CINDI-3 Campaign



·Comparison between AQ-Profiler retrieval results and those from advanced international ·High agreement in NO₂ (UV) and O₃ (UV) between AQ-Profiler and international instruments.
Validation via CINDI-3 Campaign
·Comparison between AQ-Profiler retrieval results and Skyspec (BIRA) ·High agreement in NO₂ (VIS) and O₃ (VIS) between AQ-Profiler and Skyspec (BIRA)


