The instrumental suite of the PEGASUS mobile platform is dedicated to the characterization of atmospheric composition (aerosols and trace gases), and in particular to the study of the properties of atmospheric aerosols that determine their direct and indirect effects on the radiation budget. PEGASUS is therefore equipped with its own instruments, which are systematically deployed during field campaigns (core instrumentation), as well as with instruments from the MEREIA team and, more broadly, from LISA, which are made available depending on the scientific objectives of each campaign (optional instrumentation).
Aerosol sampling
Wind-oriented high-volume isocinetic inlets (450 L min-1) with 50% particle transmission efficiency at 40 µm in diameter (optimal for marine and desert regions)
Low-volume certified isocinetic sampling lines (16 L min-1 and 38 L min-1) , various cut-off (PM2.5 and PM10)
Gas phase sampling
Low-volume (16 L/min) teflon-coated sampling lines to minimise reactivity losses of trace compounds at surfaces and through permeation
Aerosol particles
| Instrument | Measurment | Temporal resolution | Manual |
| Condensation Particle Counter TSI Inc – CPC model 3775 | Total number concentration | 1 sec | Download manual |
| Microbalance Thermo Sci.– TEOM FDMS | Total mass concentration | 5 mins | Download manual |
| Scanning Mobilty Particle Sizer TSI Inc – SMPS model 3080 | Size Distribution diameter 10 – 450 nm | 3 mins | Download manual |
| Optical Particle Counter GRIMM – OPC model 1.109 | Size Distribution diameter 0.25 – 32 um | 6 sec | Download manual |
| Integrating nephelometer TSI Inc- model 3563 | Particle scattering coefficient 450, 550, 700 nm | 1 sec | Download manual |
| Aethalometer Magee Sci. – model AE31 | Particle attenuation coefficient 370, 420, 470, 590, 660, 880, 950 nm | 2 mins | Download manual |
| CAPS PMex Aerodyne Sci. | Particle extinction coefficient 450 and 630 nm | 1 sec | Download manual |
| CAPS SSA Aerodyne Sci | Particle extinction and scattering coefficient 450 and 630 nm | 1 sec | Download manual |
| Methrom Particle Into Liquid Sampler with on-line cromatography (PILS-IC) | Bulk water-soluble aerosol composition Quantification limit between 0.2-1 µg/m3 (depends on the component) | 70 mins (inorganic and organic components) 40 mins (inorganic components only) | Download manual |
| Single-stage Filter Sampling Filter types: nuclepore, quartz, teflon | Bulk inorganic and organic aerosol composition | NA | Download manual |
| Dekati Four-stage impactor sampling Filter types: nuclepore, quartz, teflon | Size-segregated inorganic and organic aerosol composition | NA | Download manual |
| Impactor sampling on carbon-coated grids | Single particle analysis | NA | Download manual |
Gas
| Instrument | Measurment | Temporal resolution | Detection limit | Manual |
| HORIBA – APSA 370 | SO2 Mixing Ratio | 1 ppb | Download manual | |
| HORIBA – APOA 370 | O3 Mixing Ratio | 1 ppb | Download manual | |
| HORIBA – APNA 370 | NOx NO2 NO Mixing Ratio | 1 ppb | Download manual | |
| PICARRO – G3202 | CO, CO2 Mixing Ratio | 1 sec | Download manual | |
| Kore HR PTR-ToF-MS | Primary and secondary volatile organic compounds (VOCs) | 1 min | depending on species | Download manual |
| AirmoVOC | Primary and secondary volatile organic compounds (VOCs) | 30 mins | depending on species | Download manual |
| CI-APi-TOF | Highly Oxygenated organic Molecules (HOMs) | 1 sec | depending on species | Download manual |
Weather and radiation
| Instrument | Measurment | Temporal resolution | Manual |
| Meteorological Station CIMEL | Surface temperature, humidity, wind speed and direction | Download manual | |
| Aerosol Lidar Leosphere – model ALS300 | Vertical profile of aerosol backscattering and depolarisation (355 nm) | 1 sec | Download manual |
| Solar Radiation LICOR LI1800 | Spectral downwelling radiative Range 300 – 850 nm with 1 nm resolution | 30 sec | Download manual |