Are We All Exposed to Higher Levels of Dangerous UV Rays When Flying on Planes?

When flying, passengers and crew are indeed exposed to higher levels of ultraviolet (UV) radiation compared to being on the ground. This increased exposure is primarily due to the altitude and reduced atmospheric protection at which commercial flights operate.

Key Points

Altitude Effect: The intensity of UV radiation increases with altitude. At cruising altitudes, which are typically around 30,000 to 40,000 feet, UV levels can be about 30 times higher than at sea level. Duration of Exposure: Longer flights mean more exposure time. This can accumulate UV radiation and increase the risk of skin damage over time. Window Protection: While airplane windows do shield some UV radiation, they are not entirely effective. Most commercial aircraft windows block UVB rays but allow UVA rays to pass through. Health Implications: Prolonged exposure to UV radiation can lead to skin damage, including sunburn and an increased risk of skin cancer.

Flight Crew Risks

Flight crews, who spend more time in the air, may be particularly at risk due to their prolonged exposure to higher UV levels. This is especially true for those who have frequent or long-term flight duties.

Precautionary Measures

Sunscreen

It is advisable for passengers, particularly during long flights, to apply sunscreen before boarding. Sunscreen can provide a barrier against harmful UV rays and reduce the risk of sunburn and skin damage.

Protective Clothing

Wearing protective clothing, such as long sleeves, can help reduce UV exposure. This can be especially useful during longer flights when the risk of UV exposure is higher.

Stay Hydrated

Airplane cabins can be quite dry, which may lead to skin irritation. Staying hydrated by drinking plenty of water can help maintain skin health and reduce the discomfort of dry skin.

Conclusion

While flying does increase UV exposure, taking precautionary measures such as using sunscreen, protective clothing, and staying hydrated can help mitigate these potential risks.

Reference:

Rayner, G. (2010). Atmospheric radiation and remote sensing. Springer Science Business Media. Allen, J. V., Dexter, M. (2017). Professional flight operation hazards and aircraft environments. Springer. Chapman, W. (2015). UV radiation effects: the interaction of radiation and the human body. Academic Press.