Leaf and Air Data
Leaf Damage Data
When plants in our garden begin showing visible O3 symptoms, we rate the amount of leaf damage every week. We do this by going back to the same stems and leaves and writing down a score based on the percent of O3 damage. Scoring is based on a rating system developed by the U.S. National Park Service, described here. Another good source on scoring ozone damage in common milkweed, cutleaf coneflower, and snap beans, is NASA's "Ozone-Induced Foliar Injury Field Guide".
In 2013: we scored weekly O3 damage in the common milkweed and cutleaf coneflower plants in the SLSC Ozone Garden. This garden was in its second season and showed much more O3 damage this year compared to 2012. There was no O3 damage on the milkweed or coneflower in our gardens at Grant's Farm and SWIC, which were both planted in 2013.
Two common milkweed leaves in the SLSC Ozone Garden showing different stages of O3 damage in 2013
Two cutleaf coneflower leaves with early and later O3 damage in the SLSC Ozone Garden in 2013
Ozone and Weather Data
A weather station and ozone (O3) monitor are located in each of our gardens. Our monitoring equipment comes from the Global Ozone (GO3) Project. The GO3 Project provides O3 and weather monitoring equipment to institutions worldwide, primarily schools. With their software, O3 and weather data from our gardens, and from over 100 other locations worldwide, can be accessed in real-time on the GO3 Project's website.
To see our data go here: GO3 OZONE DATA and select "Graph GO3 Data" to choose the location, dates, and parameters you wish to see.
In 2013, the Science Center monitor began collecting data on April 24, and Grant's Farm on July 10. Both ran through October.
Weather station (on tall post in front of jet exhibit) and O3 monitor (inside plastic box with window) at the Science Center Ozone Garden in the fall of 2012. In the box with the O3 monitor is an antenna that transmits data to a laptop inside the McDonnell Planetarium.
Weather station console and data collection computer (on ledge on back wall) inside a service room of the McDonnell Planetarium. The laptop updates current weather and O3 data to the GO3 website every 15 minutes.