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A Multimethodological Approach to Study the Spatial Distribution of Air Pollution in an Alpine Valley During Wintertime : Volume 9, Issue 1 (09/02/2009)

By Schnitzhofer, R.

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Book Id: WPLBN0003998407
Format Type: PDF Article :
File Size: Pages 29
Reproduction Date: 2015

Title: A Multimethodological Approach to Study the Spatial Distribution of Air Pollution in an Alpine Valley During Wintertime : Volume 9, Issue 1 (09/02/2009)  
Author: Schnitzhofer, R.
Volume: Vol. 9, Issue 1
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2009
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Wisthaler, A., Vergeiner, J., Norman, M., Gohm, A., Schnitzhofer, R., Obleitner, F.,...Harnisch, F. (2009). A Multimethodological Approach to Study the Spatial Distribution of Air Pollution in an Alpine Valley During Wintertime : Volume 9, Issue 1 (09/02/2009). Retrieved from http://www.ebooklibrary.org/


Description
Description: Institute of Ion Physics and Applied Physics, University of Innsbruck, Innsbruck, Austria. In order to investigate the spatial distribution of air pollutants in the Inn valley (Tyrol, Austria) during wintertime, a joint field campaign of the three research projects ALPNAP (Monitoring and Minimisation of Traffic-Induced Noise and Air Pollution Along Major Alpine Transport Routes), INNAP (Boundary Layer Structure in the Inn Valley during high Air Pollution) and INNOX (NOx-structure in the Inn Valley during High Air Pollution) was carried out in January/February 2006. In addition to continuous ground based measurements, vertical profiles of various air pollutants and meteorological parameters were obtained on six selected days. For in-situ investigations, a tethered balloon was used to analyse the lowest atmospheric layers, 0–500 m above the valley bottom (a.v.b.), and a research aircraft sampled at 150–2200 m a.v.b. An aircraft equipped with an aerosol backscatter lidar performed nadir measurements at 3000 m a.v.b. Combined results from a typical day show a strongly polluted layer up to about 125 m a.v.b. in the morning. Around midday concentrations on the valley floor decrease indicating some vertical air exchange despite thermally stable conditions. Strong vertical and horizontal gradients with enhanced pollution levels along the sunny side of the valley up to 1300 m a.v.b. were observed in the afternoon. However, this vertical mixing due to thermally or dynamically driven slope and valley winds was not strong enough to renew the valley air volume.

Summary
A multimethodological approach to study the spatial distribution of air pollution in an Alpine valley during wintertime

Excerpt
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