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Spatial distribution of aerosols in the Inn Valley atmosphere during wintertime

Harnisch, F. and Gohm, A. and Fix, A. and Schnitzhofer, R. and Hansel, A. and Neininger, B. (2009) Spatial distribution of aerosols in the Inn Valley atmosphere during wintertime. Meteorology and Atmospheric Physics, 103, pp. 223-235. DOI: 10.1007/s00703-008-0318-3.

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Official URL: http://www.springerlink.com/content/0177-7971


This study analyzes the structure of the wintertime boundary layer in an Alpine valley (Inn Valley, Austria) for a case of high air pollution. We present airborne aerosol observations collected with particle counters and a backscatter lidar. The effect of upslope winds on the spatial distribution of pollutants is investigated. An asymmetry in the aerosol distribution is observed in the cross-valley direction which presumably is related to differences in orientation and albedo of the two valley slopes. A one-sided thermal circulation, which develops above the sun-exposed slope, is most likely responsible for the observed redistribution of aerosols during daytime. Elevated aerosol layers form at the height of shallow inversion layers. Despite this vertical transport of pollutants by slope winds, no effective vertical venting of the polluted air mass into the free atmosphere can be achieved.

Document Type:Article
Title:Spatial distribution of aerosols in the Inn Valley atmosphere during wintertime
AuthorsInstitution or Email of Authors
Harnisch, F.Univ. of Innsbruck, Innsbruck, A
Gohm, A.Univ. of Innsbruck, Innsbruck, A
Schnitzhofer, R.Univ. of Innsbruck, Innsbruck, A
Hansel, A.Univ. of Innsbruck, Innsbruck, A
Neininger, B.MetAir AG, CH
Journal or Publication Title:Meteorology and Atmospheric Physics
Refereed publication:Yes
In Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 223-235
Keywords:Alpine valley, backscatter lidar
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Atmosphären- und Klimaforschung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Jana Freund
Deposited On:10 Nov 2008
Last Modified:12 Dec 2013 20:33

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