Summer Haze Event

Haze events in the summer are common in the East due to high concentrations of sulfate particles. These sulfate particles grow rapidly in high humidity environments to a size that effectively scatters light. This scattering of light causes poor visibility. Below are some webcam pics from Burlington (www.hazecam.net) during a haze event in mid-August 2002. Also, is an accompanying graph of continuous ozone and PM_2.5 measurements made at monitoring sites in Vermont.

Burlington, VT Haze Event (August 2002)
Maximum hourly ozone and PM_2.5 values noted

PM_2.5 and Ozone Hourly Averages (August 2002)