1.5 NOAA EPA Near-Roadway Sound Barrier Atmospheric Tracer Study 2008

摘要

A roadway toxics dispersion study was conducted at the Idaho National Laboratory to document the effects on concentrations of roadway emissions behind a roadside sound barrier in various conditions of atmospheric stability. The key finding was that reduced concentrations were measured behind the barrier in all stability conditions. It was also found that the magnitude of the concentration footprint behind the barrier was tied to atmospheric stability and that the roadway tended to trap high concentrations during light wind speed conditions.