Micro-scale variability of PM10 - Influence of vegetation elements on ground-level aerosol concentrations

• Simulation results indicate that trees and shrubs have an influence on ground-level
particle distributions. PM10 concentrations at 1.5m agl were simulated to be marginally
higher when considering vegetation elements.
• The impact of vegetation elements on the particle distribution was higher more close
to the sources (traffic lines) and more pronounced in the mid- to high-end concentration
range.
• Output data of ENVI-met must, as in any other case of predictive models, be interpreted
with caution. Observation data were seriously under predicted in all test cases.