München 2004 – wissenschaftliches Programm
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UP: Umweltphysik
UP 17: Poster: Atmosph
äre und Messtechnik
UP 17.3: Poster
Dienstag, 23. März 2004, 14:00–16:00, Schellingstr. 3
On-line monitoring of VOCs at a high mountain site in the German Alps (Schneefernerhaus, Zugspitze) — •Gregor Simmer1, Wolfgang Gramber1, Armin Wisthaler1, Martin Graus1, Ulrich Poeschl2, and Armin Hansel1 — 1Institute of Ion Physics, University of Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria — 2Institute of Hydrochemistry, Technical University of Munich, Marchioninstr. 17, D-81377 Munich, Germany
In the frame of the Schneefernerhaus Aerosol and Reactive Nitrogen Experiment (SCAVEX) a Proton-Transfer-Reaction Mass Spectrometer was installed on the Environmental Research Station Schneefernerhaus (2650 m a.s.l.). The Schneefernerhaus is situated about 300 m below the peak of the Zugspitze in the German Alps. From 28th October 2002 till 12th March 2003 the remotely operated PTR-MS instrument measured a series of volatile organic compounds (VOCs) including oxygenates (methanol, acetaldehyde, acetone, methyl ethyl ketone), aromatics (benzene, toluene, alkyl substituted benzenes) and the biomass burning tracer acetonitrile. PTR-MS measurements on high mountain sites can be used to identify air masses with very different chemical characteristics, which have originated in the planetary boundary layer or have undergone long-range transport in the free troposphere. First results will be presented.