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The influence of local winds on the spatial distribution of air pollutants in an Alpine valley

Gohm, A. and Harnisch, F. and Schnitzhofer, R. and Hansel, A. and Fix, A. and Neininger, B. and Obleitner, F. and Vergeiner, J. and Griesser, E. (2008) The influence of local winds on the spatial distribution of air pollutants in an Alpine valley. 13th Conference on Mountain Meteorology, 2008-11-08 - 2008-15-08, Whistler, BC (CAN).

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Official URL: http://ams.confex.com/ams/13MontMet17AP/techprogram/paper_140917.htm

Abstract

The subject of our investigation is the wintertime boundary layer of the lower Inn Valley (Austria) during episodes of high air pollution. We investigate physical processes which are responsible for transport and redistribution of pollutants. Our study illuminates the influence of thermally driven winds (valley and slope winds), dynamically driven flows (e.g., foehn winds, low level cold-air advection) and related mechanically and thermally induced turbulence on the spatial structure of air pollutants. Our analysis is based on airborne and ground-based measurements collected on four winter days in 2007 during the joint field experiment of the three research projects INNAP, INNOX and ALPNAP. The dataset consists of airborne aerosol backscatter lidar data as well as airborne and ground-based in situ measurements of chemical and meteorological parameters. Our study highlights the strong case-to-case variability of the distribution of pollutants due to different meteorological background conditions and different types of local winds.

Document Type:Conference or Workshop Item (Paper)
Title:The influence of local winds on the spatial distribution of air pollutants in an Alpine valley
Authors:
AuthorsInstitution or Email of Authors
Gohm, A.Univ. of Innsbruck, Innsbruck, A
Harnisch, F.UNSPECIFIED
Schnitzhofer, R.UNSPECIFIED
Hansel, A.UNSPECIFIED
Fix, A.UNSPECIFIED
Neininger, B.UNSPECIFIED
Obleitner, F.UNSPECIFIED
Vergeiner, J.UNSPECIFIED
Griesser, E.UNSPECIFIED
Date:2008
Keywords:boundary layer, high air pollution, INNAP, INNOX, ALPNAP
Event Title:13th Conference on Mountain Meteorology
Event Location:Whistler, BC (CAN)
Event Type:international Conference
Event Dates:2008-11-08 - 2008-15-08
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Low-Emission Air Traffic (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Stephanie Zähnle
Deposited On:10 Feb 2009
Last Modified:27 Apr 2009 15:48

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