Aerosol characterisation at the FEBUKO upwind station Goldlauter (I): Particle mass,main ionic components,OCEC, and mass closure |
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| Institution: | 2. Department of Companion Animals, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island, Canada;3. Avian and Exotic Animal Medicine, Angell Animal Medical Center, Boston, MA 02130, 617-989-1561;4. Cardiology, Angell Animal Medical Center, Boston, MA 02130, 617-522-7282;1. College of Marine Science, University of South Florida, 830 1st St. S., St. Petersburg, FL 33701, USA;2. Institute of Biochemistry & Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada;3. BioMEMS Resource Center & Center for Engineering in Medicine, Massachusetts General Hospital & Harvard Medical School, 114 16th Street, Charlestown, MA 02129, USA;4. Evergreen State College, Olympia, WA, USA;1. School of Basic Medical Sciences, Binzhou Medical University, Yantai 264003, China;2. Yantai Institute of Coastal Zone Research, Chinese Academy of Science, Yantai 264003, China |
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| Abstract: | This contribution presents characterisation efforts of the gas phase and particle phase main components during the FEBUKO orographic cloud passage experiments in autumn 2001 and 2002 in the Thüringer Wald (Germany). Three events out of a total of 14 were chosen as the best events considering all meteorological conditions. Gas phase and size-segregated particle phase data obtained from physical (dry size distribution) and chemical (particle mass, main ions, OCEC, and water-soluble metals) measurements are presented for the upwind site. The total particulate mass concentration (PM10) was found to be between 8 and 17 μg m−3. Particles with an aerodynamic diameter up to 1.2 μm contribute about 80% of the mass concentration. About 90% of the total ion concentration consists of nitrate, sulphate and ammonium. The OC concentration in all three events amounts to about 1.0 μg m−3, whereas EC concentrations were between 0.40 and 1.0 μg m−3. The contribution of OC and EC to stage mass ranged from 5% to 35% and from 2% to 17%, respectively. The water content of particles was estimated to be 16–18%. Physical and chemical mass closure is discussed in detail and the results are in a reasonable agreement. The complex data set obtained for each event can be used in the initialisation of models for the multiphase processes during and after the cloud passage of the characterised air mass. |
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