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Commercial flights receive greater cosmic-radiation exposure at higher magnetic latitudes.

The Claim

Cosmic radiation exposure on a commercial flight increases as the aircraft flies closer to Earth's magnetic poles.

Verified by Lenz ·

The Short Version

Commercial-flight radiation exposure generally rises toward Earth’s magnetic poles because geomagnetic shielding becomes weaker at higher magnetic latitudes. Multiple authoritative and peer-reviewed sources support this relationship. At the highest latitudes, exposure may plateau rather than continue increasing without limit.

Caveats

  • The increase is not necessarily continuous; radiation levels may plateau at high magnetic latitudes.
  • Altitude, flight duration, solar activity, and space-weather events also substantially affect exposure.
  • Magnetic latitude, rather than proximity to the geographic poles alone, governs the shielding effect.

The Receipts

  1. NASA Flights Study Cosmic Ray Effects for Air, Future ...

    nasa.gov

  2. Facts About Radiation from Air Travel | Radiation and Your Health | CDC

    cdc.gov

  3. ICRP Publication 132: Radiological Protection from Cosmic Radiation in Aviation

    journals.sagepub.com

  4. Cancer risks from cosmic radiation exposure in flight: A review

    pmc.ncbi.nlm.nih.gov

  5. AC 120-61B - In-Flight Radiation Exposure

    faa.gov

  6. Ionizing Radiation in Earth's Atmosphere and in Space Near Earth

    faa.gov

  7. Radiation Exposure of Air Carrier Crewmembers 2

    apps.dtic.mil

  8. Cosmic Radiation Exposure of Aircraft Crew under the Impact of Geomagnetic Vertical Cutoff Rigidity: Case Study of International Flights from Suvarnabhumi Airport, Thailand

    doi.org

  9. Enhanced Radiation Exposure of Airline Crew and Passengers During the May 2024 Geomagnetic Storm

    doi.org

  10. Numerical calculation of the radiation exposure from galactic cosmic rays at aviation altitudes with the PANDOCA core model

    elib.dlr.de

+ 27 more sources — see the full list on Lenz

Filed Under

Commercial AviationCosmic RadiationEarthEarth's Magnetic Poles

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