Technical data
SAPHIR was designed to meet the following criteria:
- chemically inert internal surfaces
- large volume to surface ratio
- clean air supply for simulation of remote atmospheres
- variable access to the measurement volume for instruments
- international platform for basic research and for intercomparisons of measurements
- wide range of standard equipment for trace gas measurements
Parameters | Instrument |
|---|---|
| hydroxyl-radicals (OH) | laser absorption spectroscopy (DOAS) |
| hydroxyl-radicals (OH), and HO2, RO2 | laser-induced fluorescence (LIF) |
| OH reactivity | Laser Photolysis - Laser Induced Fluorescence (LP-LIF) |
| hydrocarbons up to C6 | gas chromatography |
| volatile hydrocarbons up to C10 | gas chromatography-mass spectrometry (GC-MS) |
| carbon monoxide (CO) | gas chromatography |
| PAN (peroxyacetyl nitrate) | gas chromatography |
| hydrocarbons | proton-transfer-reaction time-of-flight mass spectrometry (PTR-TOF-MS) |
| ozone | UV absorption-spectrometry |
| solar radiation | spectroradiometer |
| nitric oxide, nitrogen oxides | chemiluminescence |
| NO3 / N2O5 | Cavity ring-down spectroscopy |
| CO, CO2, H2O, CH4 | Cavity ring-down spectroscopy |
| aerosol properties | CPC, SMPS |
| aerosol composition | aerosol mass spectrometry (AMS) |
| temperature, humidity, air pressure | standard instruments |
Detailed technical data: | |
|---|---|
| shape: | cylinder |
| volume: | 270 m3 |
| surface: | 324 m2 |
| surface/volume ratio: | 1.08 m-1 |
| diameter: | 5 m |
| length: | 20 m |
| wall material: | FEP-Teflon, double-wall |
| wall thickness: | 150 mm |
| lighting: | sun |
| shading: | louvre system, several stages |
| closing time: | 60 s |
| gas purity: | N2/O2 6.0 |
| maximum purge rate: | 300 m3/h |
| temperature range: | outside temperatur |
| operation pressure: | 1000 hPa |
Last Modified: 25.03.2025