Instrumentation

Instrumentation

Le parc instrumental de la plateforme mobile PEGASUS est dédié à la caractérisation de la composition atmosphérique (aérosols et gaz trace), et en particulier à l’étude des propriétés des aérosols atmosphériques qui en conditionnent les effets direct et indirect sur le bilan de rayonnement. PEGASUS est ainsi équipée d’instruments qui lui sont propres et qui sont systématiquement mis en œuvre lors d’une campagne (instrumentation de base), ainsi que de l’instrumentation de l’équipe MEREIA et plus généralement du LISA qui sont mis à disposition selon l’objectif scientifique de la campagne (instrumentation optionnelle).

Sampling

Aerosols (2 possibilities)

  1. Set up with 2 high-volume iso-cinetic veins (450 L/min) :
  • enable several analysers and sampling devices to be operated on the same air mass
  • sampling of aerosols down to 40µm
  • marine and desert air masses
  • typical for remote areas

2. Set up with low-volume certified iso-cinetic sampling lines (16 L/min) :

  • cut-off 1 or 2.5 µm to characterize fine aerosol (typical of urban or anthropised environments)
  • cut-off 10µm to characterize natural aerosol (typical of remote environments)

Gas

Set up with low-volume (16 L/min) teflon-coated sampling lines to minimise reactivity losses of trace compounds at surfaces and through permeation

Aerosol particles

InstrumentMeasurmentTemporal resolutionManual
Condensation Particle Counter
TSI Inc – CPC model 3775		Total number concentration
1 secDownload manual
Microbalance
Thermo Sci.– TEOM FDMS		Total mass concentration
5 minsDownload manual
Scanning Mobilty Particle Sizer
TSI Inc – SMPS model 3080		Size Distribution
diameter 10 – 450 nm		3 minsDownload manual
Optical Particle Counter
GRIMM – OPC model 1.109		Size Distribution
diameter 0.25 – 32 um		6 secDownload manual
Integrating nephelometer
TSI Inc- model 3563		Particle scattering coefficient
450, 550, 700 nm		1 secDownload manual
Aethalometer
Magee Sci. – model AE31		Particle attenuation coefficient
370, 420, 470, 590, 660, 880, 950 nm		2 minsDownload manual
CAPS PMex Aerodyne Sci. Particle extinction coefficient
450 and 630 nm		1 secDownload manual
CAPS SSA Aerodyne SciParticle extinction and scattering coefficient 450 and 630 nm1 secDownload 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 compositionNADownload manual
Dekati Four-stage impactor sampling
Filter types: nuclepore, quartz, teflon		Size-segregated inorganic and organic aerosol compositionNADownload manual
Impactor sampling on carbon-coated gridsSingle particle analysis NADownload manual

Gas

InstrumentMeasurmentTemporal resolutionDetection limitManual
HORIBA – APSA 370SO2 Mixing Ratio1 ppbDownload manual
HORIBA – APOA 370O3 Mixing Ratio1 ppbDownload manual
HORIBA – APNA 370NOx NO2 NO Mixing Ratio1 ppbDownload manual
PICARRO – G3202CO, CO2 Mixing Ratio1 secDownload manual
Kore HR PTR-ToF-MSPrimary and secondary volatile organic compounds (VOCs)
1 minDownload manual
AirmoVOCPrimary and secondary volatile organic compounds (VOCs)30 minsDownload manual
CI-APi-TOF Highly Oxygenated organic Molecules (HOMs) 1 secDownload manual

Weather and radiation

InstrumentMeasurmentTemporal resolutionManual
Meteorological Station
CIMEL		Surface temperature, humidity, wind speed and directionDownload manual
Aerosol Lidar
Leosphere – model ALS300		Vertical profile of aerosol backscattering and depolarisation (355 nm)1 secDownload manual
Solar Radiation
LICOR LI1800		Spectral downwelling radiative
Range 300 – 850 nm with 1 nm resolution		30 secDownload manual

Rechercher