By Dr. Gayle Hagler and Ron Williams
The Village Green Project is up and running! The lower-cost, solar-powered equipment continuously monitors ozone and fine particles, along with meteorological measurements, and sends the data to an EPA website by the minute.
The up and down line you see above for daily ozone concentrations is a typical summer pattern. That’s because the summer sun fuels atmospheric chemical reactions throughout the day that create ground level ozone, commonly peaking in the hot afternoon. The process decreases overnight, and ozone concentrations fall.
A review of the particulate graph shows very low concentrations in early July. Not surprisingly, this coincided with rainy days, as rainfall usually removes particulates from the air. Once the rain ended, particulate levels started rising to levels we commonly see in the summertime.
So far, the air-monitoring bench survived very hot and humid weather and has operated uninterrupted during several dark and overcast days, including during back-to-back thunderstorms. We will continue to monitor the system’s performance over the remainder of the summer.
Back to School
With fall just around the corner, the school year is about to begin again. We are interested in how we can engage teachers and their students in learning about air quality science and the Village Green Project. Our outreach team is in the process of developing fun and interactive games.
Care to join the fun? Please use the comments section below if you have suggestions or questions about environmental education projects involving the Village Green Project. And please check back regularly for future blogs!
About the Authors: Dr. Gayle Hagler is an environmental engineer who studies air pollutant emissions and measurement technologies. Ron Williams is an exposure science researcher who is studying how people are exposed to air pollutants and methods to measure personal exposure.