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Meteorology and Atmospheric Physics

, Volume 103, Issue 1–4, pp 223–235 | Cite as

Spatial distribution of aerosols in the Inn Valley atmosphere during wintertime

  • F. Harnisch
  • A. GohmEmail author
  • A. Fix
  • R. Schnitzhofer
  • A. Hansel
  • B. Neininger
Article

Summary

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.

Keywords

Inversion Layer Atmos Environ Alpine Valley Aerosol Distribution Vertical Transect 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • F. Harnisch
    • 1
  • A. Gohm
    • 1
    Email author
  • A. Fix
    • 2
  • R. Schnitzhofer
    • 3
  • A. Hansel
    • 3
  • B. Neininger
    • 4
  1. 1.Institute of Meteorology and GeophysicsUniversity of InnsbruckInnsbruckAustria
  2. 2.Institut für Physik der AtmosphäreDeutsches Zentrum für Luft- und Raumfahrt (DLR)OberpfaffenhofenGermany
  3. 3.Institute of Ion Physics and Applied PhysicsUniversity of InnsbruckInnsbruckAustria
  4. 4.MetAir AGSwitzerland

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