AAAR 32nd Annual Conference
September 30 - October 4, 2013
Oregon Convention Center
Portland, Oregon, USA
Abstract View
Introduction to Project “Dispersion of Air Pollution in the Boundary Layer – New Approach with Scanning Doppler Lidars”
Anne Hirsikko, VILLE VAKKARI, Ewan J. O'Connor, Curtis R. Wood, Finnish Meteorological Institute, Helsinki, Finland
Abstract Number: 246 Working Group: Instrumentation and Methods
Abstract Air quality is much controlled by source rate of particulate and gaseous pollutants, as well as by their dispersion and dissipation within and from the atmospheric boundary layer, respectively. Similarly, a number of chemical and physical processes taken place in air and emissions from biosphere are greatly influenced by dynamical nature of atmosphere. In order to understand boundary layer and pollutant dispersion dynamics using scanning Doppler lidars we have launched a new project funded by Finnish Maj and Tor Nessling foundation (project number 2013006). During the project we utilise a scanning Doppler lidar (HALO Photonics) network of Finnish Meteorological Institute. The network was established during September 2011 – February 2013, and it consists of five meteorologically and environmentally different sites. Our aims are to:
1) Investigate capability and potential of scanning Doppler lidars as wind, turbulence and air quality investigation and monitoring tool.
2) Facilitate research of atmospheric and environment research disciplines.
3) Develop a product for area of industry where knowledge of wind and pollution dispersion is essential.
Project steps are as follows
4) We have implemented a number of scanning routines (vertical azimuth display and range height indicator with various azimuth and elevation setups) to monitor dispersion of aerosol particles and investigate effect of varying surface roughness on boundary layer wind and mixing in Helsinki and Utö island.
5) Currently we are developing data analysis methods for surface and boundary layer wind and turbulence. Status of our method development and subsequent results will be presented in the conference.
6) Next step will be investigation and subsequent data analysis method development for dispersion of aerosol particles within the boundary layer.