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Air Pollution Transport in an Alpine Valley: Results From Airborne and Ground-Based Observations

Gohm, A. and Harnisch, F. and Vergeiner, J. and Obleitner, F. and Schnitzhofer, R. and Hansel, A. and Fix, A. and Neininger, B. and Emeis, S. and Schäfer, K. (2009) Air Pollution Transport in an Alpine Valley: Results From Airborne and Ground-Based Observations. Boundary-Layer Meteorology. DOI: 10.1007/s10546-009-9371-9.

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Official URL: http://www.springerlink.com/content/dm07744670777094/


An observational dataset from a wintertime field campaign in the Inn Valley, Austria, is analysed in order to study mechanisms of air pollution transport in an Alpine valley. The results illustrate three types of mechanisms: transport by a density current, back-and-forth transport by valley winds, and transport by slope winds. The first type is associated with an air mass difference along the valley. Cooler air located in the lower part of the valley behaves like a density current and produces the advection of pollutants by upvalley winds. In the second type, strong horizontal gradients in pollution concentrations exist close to ground. Multiple wind reversals result in a back-and-forth transport of pollutants by weak valley winds. In the third type, upslope winds during daytime decrease low-level pollution concentrations and cause the formation of elevated pollution layers.

Document Type:Article
Title:Air Pollution Transport in an Alpine Valley: Results From Airborne and Ground-Based Observations
AuthorsInstitution or Email of Authors
Gohm, A.Univ. of Innsbruck, A
Vergeiner, J.Univ. of Innsbruck, A
Obleitner, F.Univ. of Innsbruck, A
Schnitzhofer, R.Univ. of Innsbruck, A
Hansel, A.Univ. of Innsbruck, A
Neininger, B.MetAir AG, Menzingen, CH
Emeis, S.Forschungszentrum Karlsruhe, Garmisch-Partenkirchen
Schäfer, K.Forschungszentrum Karlsruhe, Garmisch-Partenkirchen
Date:20 March 2009
Journal or Publication Title:Boundary-Layer Meteorology
Refereed publication:Yes
In ISI Web of Science:Yes
Keywords:Aerosols, ALPNAP, Foehn, Lidar, Local winds, NOx, Particulate matter
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignement
DLR - Research theme (Project):L -- no assignement
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Stephanie Zähnle
Deposited On:21 Apr 2009
Last Modified:12 Dec 2013 20:37

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