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Proceedings Article

Mixing layer height and air pollution levels in urban area

[+] Author Affiliations
Klaus Schäfer, Stefan Emeis, Carsten Jahn, Peter Suppan

Karlsruher Institut für Technologie (Germany)

Patrick Wagner

Univ. Duisburg-Essen (Germany)

Christoph Muenkel

Vaisala GmbH (Germany)

Proc. SPIE 8534, Remote Sensing of Clouds and the Atmosphere XVII; and Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing VIII, 853409 (October 25, 2012); doi:10.1117/12.974328
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From Conference Volume 8534

  • Remote Sensing of Clouds and the Atmosphere XVII; and Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing VIII
  • Evgueni I. Kassianov; Adolfo Comeron; Richard H. Picard; Klaus Schäfer; Upendra N. Singh; Gelsomina Pappalardo
  • Edinburgh, United Kingdom | September 24, 2012

abstract

Ceilometers are applied by KIT/IMK-IFU to detect layering of the lower atmosphere continuously. This is necessary because not only wind speed and direction but also atmospheric layering and especially the mixing layer height (MLH) influence exchange processes of ground level emissions. It will be discussed how the ceilometer monitoring information is used to interpret the air pollution near the ground.

The information about atmospheric layering is continuously monitored by uninterrupted remote sensing measurements with the Vaisala ceilometer CL51 which is an eye-safe commercial mini-lidar system. Special software for this ceilometer provides routine retrievals of lower atmosphere layering from vertical profiles of laser backscatter data.

An intensive measurement period during the winter 2011/2012 is studied. The meteorological influences upon air pollutant concentrations are investgated and the correlations of air pollutant concentrations with ceilometer MLH are determined. Benzene was detected by department of Applied Climatology and Landscape Ecology, University of Duisburg-Essen (UDE) with a gas chromatograph during the measurement period. The meteorological data are collected by UDE and the monitoring station Essen of the German national meteorological service DWD. The concentrations of the air pollutants NO, NO2 and PM10 are provided by the national air pollution network LANUV. © (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Klaus Schäfer ; Patrick Wagner ; Stefan Emeis ; Carsten Jahn ; Christoph Muenkel, et al.
" Mixing layer height and air pollution levels in urban area ", Proc. SPIE 8534, Remote Sensing of Clouds and the Atmosphere XVII; and Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing VIII, 853409 (October 25, 2012); doi:10.1117/12.974328; http://dx.doi.org/10.1117/12.974328


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