GSUN: Grating Sunphotometer
Purpose of Participation
- Derivation of the columnar spectral aerosol optical thickness based on ground-based measurements at Rabben station
Instrument description
The instrument GSUN is used for measurements of the direct solar radiations.
| Species | Aerosol (columnar AOD) |
| Method | Direct solar measurements |
| Quantity primary | Spectral aerosol optical depth |
| Quantity secondary | |
| Spectral range | 350 - 1050 nm ( ??= 3.6 nm) |
| Altitude range | whole atmosphere |
| Vertical resolution | 5 minute |
| Temporal resolution | |
| Operation | Continuously only during clear-sky conditions |
| Precision | ± 10% |
| Data availability (during campaign) | three month |
| Final data (after campaign) | six month |
Specific remarks
- ground-based system
Contact Information
Head: Masataka Shiobara (NIPR)
Members: Masanori Yabuki (NIPR)