Key Points: Ozone
- Stratospheric Ozone is necessary to protect life on Earth’s surface from UV radiation.
- Ground-level (Tropospheric) Ozone is harmful at high levels.
- Dobson Units, or DU’s, are used to measure ozone concentrations across the globe.
- CFC’s deplete ozone and led to the the “Ozone Hole” in the late 20th Century.
