HR: 17:30h
AN: A44B-07    [Abstracts]
TI: The Feldberg Aerosol Characterisation Experiment 2004
AU: Frank, G P
EM: gfrank@mpch-mainz.mpg.de
AF: Max Planck Institute for Chemistry, P.O. Box 3060, Mainz, D-55020 Germany
AU: Drewnick, F
EM: drewnick@mpch-mainz.mpg.de
AF: Max Planck Institute for Chemistry, P.O. Box 3060, Mainz, D-55020 Germany
AU: Chand, D
EM: duli@mpch-mainz.mpg.de
AF: Max Planck Institute for Chemistry, P.O. Box 3060, Mainz, D-55020 Germany
AU: Curtius, J
EM: curtius@uni-mainz.de
AF: Institute for Atmospheric Physics, Johannes Gutenberg University, Postfach, Mainz, D-55099 Germany
AU: Dusek, U
EM: dusek@mpch-mainz.mpg.de
AF: Max Planck Institute for Chemistry, P.O. Box 3060, Mainz, D-55020 Germany
AU: Hoffer, A
EM: ahoffer@mpch-mainz.mpg.de
AF: Max Planck Institute for Chemistry, P.O. Box 3060, Mainz, D-55020 Germany
AU: Metzger, S
EM: metzger@mpch-mainz.mpg.de
AF: Max Planck Institute for Chemistry, P.O. Box 3060, Mainz, D-55020 Germany
AU: Schmid, O
EM: oschmid@mpch-mainz.mpg.de
AF: Max Planck Institute for Chemistry, P.O. Box 3060, Mainz, D-55020 Germany
AU: Schneider, J
EM: schneider@mpch-mainz.mpg.de
AF: Max Planck Institute for Chemistry, P.O. Box 3060, Mainz, D-55020 Germany
AU: Voessing, H
EM: voessing@mail.uni-mainz.de
AF: Institute for Atmospheric Physics, Johannes Gutenberg University, Postfach, Mainz, D-55099 Germany
AU: Hildebrandt, L
EM: lea@caltech.edu
AF: Department of Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125 United States
AU: Juergens, N
EM: juergens@mpch-mainz.mpg.de
AF: Max Planck Institute for Chemistry, P.O. Box 3060, Mainz, D-55020 Germany
AU: Juergens, N
EM: juergens@mpch-mainz.mpg.de
AF: Institute for Landscape Ecology, University of Muenster, Schlossplatz 2, Muenster, D-48149 Germany
AU: Hings, S
EM: henseler@mpch-mainz.mpg.de
AF: Max Planck Institute for Chemistry, P.O. Box 3060, Mainz, D-55020 Germany
AU: Kuerten, A
EM: kuerten@uni-mainz.de
AF: Institute for Atmospheric Physics, Johannes Gutenberg University, Postfach, Mainz, D-55099 Germany
AU: Nillius, B
EM: b.nillius.gmx.de
AF: Institute for Atmospheric Physics, Johannes Gutenberg University, Postfach, Mainz, D-55099 Germany
AU: Walter, S
EM: walter@mpch-mainz.mpg.de
AF: Max Planck Institute for Chemistry, P.O. Box 3060, Mainz, D-55020 Germany
AU: Weigel, R
EM: rweigel@mpch-mainz.mpg.de
AF: Max Planck Institute for Chemistry, P.O. Box 3060, Mainz, D-55020 Germany
AU: Bingemer, H
EM: bingemer@meteor.uni-frankfurt.de
AF: Institute for Meteorology and Geophysics, Johann Wolfgang Goethe University, Feldbergstrasse 47, Frankfurt am Main, D-60323 Germany
AU: Borrmann, S
EM: borrmann@mpch-mainz.mpg.de
AF: Max Planck Institute for Chemistry, P.O. Box 3060, Mainz, D-55020 Germany
AU: Borrmann, S
EM: borrmann@mpch-mainz.mpg.de
AF: Institute for Atmospheric Physics, Johannes Gutenberg University, Postfach, Mainz, D-55099 Germany
AU: * Andreae, M O
EM: andreae@mpch-mainz.mpg.de
AF: Max Planck Institute for Chemistry, P.O. Box 3060, Mainz, D-55020 Germany
AB: First results from the Feldberg Aerosol Characterisation Experiment (FACE) 2004 campaign will be presented. The objectives of the experiment were: 1) Physical and chemical characterisation of the aerosol in central Europe by state-of-the-art aerosol instrumentation; 2) Test and comparison of new and established instrumentation; and 3) Investigation of links between aerosol properties in closure and model studies. The measurements were made at the Taunus Observatory (Kleiner Feldberg, 825 m asl) in central Germany, July - August 2004. The experiment included size-resolved real time chemical characterisation of volatile and semi-volatile molecular species with a standard (Quadrupole) Aerosol Mass Spectrometer (Q-AMS) and a Time-of-Flight Aerosol Mass Spectrometer (ToF-AMS), as well as impactor and filter sampling for analysis of size resolved chemical composition (inorganic ions and organic components), and aerosol light absorption. Furthermore we performed measurements of aerosol number concentrations using several Condensation Nuclei (CN) counters, and aerosol size distribution measurements at dry and ambient conditions using Differential Mobility Analysers (SMPS systems), Optical Particle Counters (OPC) and an Electrical Low Pressure Impactor (ELPI). In addition, size resolved measurements of Cloud Condensation Nuclei (CCN) concentrations and efficiencies as a function of supersaturation were conducted. Optical properties were investigated by measuring scattering at dry, humidified and ambient conditions using Nephelometers, and aerosol absorption using a Photo Acoustic Instrument. Total aerosol mass (PM 1) was measured using TEOM instruments. Interpretation of the aerosol measurements is supported by CO and CO$_{2}$ concentration measurements, continuous meteorological observations of the German Weather Service (DWD), as well as back trajectory calculations. The modelling tools include CCN closure studies, using size-resolved aerosol chemical and cloud microphysical information, including aerosol composition, water uptake, CCN activation, as well as optical and cloud nucleating properties. The aerosol modelling employs a size-resolving aerosol dynamical model that is coupled to a novel thermodynamic aerosol equilibrium model, which consistently account, besides the widely modelled inorganic aerosol compounds, for mineral and organic aerosol species. Preliminary results show that the aerosol was dominated by organic species. The aerosol number concentration varied between 1000 and 40000 cm$^{-3}$, with an average around 4500 cm$^{-3}$.
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0320 Cloud physics and chemistry
DE: 0345 Pollution--urban and regional (0305)
DE: 0365 Troposphere--composition and chemistry
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting