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Ozone proves to be advantageous when it resides in the stratosphere. Boy_Anupong / Getty ImagesThe key factor that defines ozone as either beneficial or detrimental is its position.
Ozone becomes "good" when it is located in the stratosphere. This atmospheric layer begins approximately 6 miles (10 kilometers) above sea level. Naturally, the stratosphere holds around six parts per million of ozone, which plays a vital role in absorbing UV radiation and shielding us from its harmful effects (refer to How Sunburns and Sun Tans Work for insights into UV-induced skin damage). For a detailed explanation of the chemical process enabling ozone to absorb UV light, visit this page.
Ozone becomes harmful when it is present at ground level. This highly reactive gas can severely irritate lung tissues, harm vegetation, and deteriorate structures. Ground-level ozone is always problematic. Regrettably, pollutants from vehicle emissions and industrial activities react with sunlight, generating excessive ground-level ozone. In urban areas, ozone concentrations can escalate to dangerous levels, posing significant health risks. This is why ozone alerts are frequently broadcasted in the news.
Explore these fascinating links:
- How Ozone Pollution Works
- How Sunburns and Sun Tans Work
- Ozone
- The New Ozone Standard
- Ozone Depletion: Myth vs. Measurement
- The Ozone Hole Tour
- Scientists Receive Nobel Prize for Ozone Research
