Monitoring Weather and Ozone

There are two devices in our garden that collect data electronically: an ozone monitor and a weather station. Both devices send data wirelessly to a computer located inside The Franklin Institute. It is then uploaded to the GO3 project global database in real time.

The weather station collects data on the temperature, wind speed, wind direction, and amount of rainfall every minute.

The ozone monitor measures the number of ozone molecules per billion molecules. The ozone concentration is reported in parts per billion, or ppb, every minute. A small pump pulls air from outside through an inlet into the measurement cell, where UV light shines on the air sample. Ozone absorbs a particular wavelength of UV light, so we can measure how much UV light is absorbed in our sample versus a sample of air with no UV light to get the ozone concentration.

We can compare data on the levels of ozone in the air to the amount of ozone damage we measured manually in order to make conclusions about the effect of ozone on plants at our site.

You can access our ozone and temperature data for the past two years on the GO3 project database, at


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