Particle Chemistry Department Aerosol Measurements during AQABA

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Presentation transcript:

Particle Chemistry Department Aerosol Measurements during AQABA Frank Drewnick contact: frank.drewnick@mpic.de / tel. 5200

Aerosol Chemistry PM1 non-refractory components: Aerodyne HR-ToF-AMS 10-8 hPa Data Acq. Com-puter filament aerosol vaporizer particle TOF measurement orthogonal extractor ion reflector MCP detector chopper aerosol inlet (aerodynamic lens) 1000 hPa 10-7 hPa to pumps Inorganics (sulfate, nitrate, ammonium) Organics (can be separated into aerosol types: fresh/aged oxygenated OA, BBOA, HOA) No refractory material measured (e.g. mineral dust) For sufficiently high conc.: size distributions Time resolution ~0.5 min

Aerosol Chemistry PM1 total particle-bound PAH: PAS2000 Semi-quantitative measurement of total PAH located near the surface of the particles Time resolution: 10 s PM1 black carbon: Aethalometer AE33 Black carbon measurement @ 7 wavelengths Time resolution: 1 s

Aerosol Physical Variables Particle size distribution: FMPS & OPC Fast Mobility Particle Spectrometer 1-s particle size distributions Dmob = 5.6 – 560 nm No radioactive source needed Particle number concentration: CPC Condensation Particle Counter 1-s particle number conc. Dp = 5 nm – 3 µm Working fluid: H2O Optical Particle Counter 12-s particle size distributions Dopt = 250 nm – 32 µm

Logistics – Inlet System Requirements: Inlet perpendicular, no horizontal inlet lines over extended distances Aerosol must be dried before entering the container Aerosol dryer must be developed; part of the inlet system, located on top of the container. Suggestion: automatically regenerating silica gel aerosol dryer

Logistics – Space/Power/etc. Needs AMS 0.8 x 0.8 m² (+ space around) Aerosol Rack 0.8 x 0.8 m² (+ space around) Table/bench for calibration equipment 1 x 1 m²  Total: 1/3 container Power: Instruments: ~1.5 kW Aerosol dryer: ~2 – 3 kW Setup: ca. 2 days Staff: 3 persons (leg 1) 2 persons (leg 2)

Questions Aerosol Inlet: Will a common aerosol inlet including aerosol dryer be provided? Container location: We need a perpendicular inlet. Is container space in a container as far as possible at the front end of the ship available? Container conditions: What is the expected temperature inside the container? How much space is available for our instruments? Setup: How long will be the setup time in the harbor? External information: Is AIS information on other ships available in real time?