CNR 1: NET RADIOMETER
Purpose of Participation
- Quantification of variability of surface albedo
- Quantification of variability net solar radiation and net far infrared radiation
Instrument description
The CNR1 measures components of radiation balance at the earth's surface, i.e. upward (and downward) solar and infrared fluxes. The instrument consists of two pyranometers, model type CM 3, for measuring solar radiation, and of two pyrgeometers, model type CG 3, for measuring far infrared radiation. Both the pyranometers and pyrgeometers have a termopile sensor coated with a black absorbent coating. The sensors convert the incident radiation into a voltage.
| CM 3 | CG 3 | |
| Species | solar radiation | far infrared radiation |
| Method | direct measurements | direct measurements |
| Quantity primary | downward solar flux and upward solar flux reflected from the surface | upward and downward far infrared fluxes |
| Quantity secondary | surface albedo, net solar radiation | net far infrared radiation |
| Spectral range | total radiation in the range 0.3 µm - 3 µm | total radiation in the range 5 µm - 50 µm |
| Altitude range | surface | surface |
| Vertical resolution | ||
| Temporal resolution | 1 minutes | 1 minutes |
| Operation | continuous | continuous |
| Precision | 10% for daily sums | 10% for daily sums |
| Data availability (during campaign) | weekly | weekly |
| Final availability (after campaign) | three months | three months |
Specific remarks
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References
Instruction Manual. CNR 1 Net-Radiometer. Kipp&Zonen, Delft, The Netherlands
Contact Information
Head: Anna Rozwadowska (IOPAS)
Members: Slawomir Wo´zniak (IOPAS Sopot)