Altitude vs. Radiation Dose Simulator
Use the slider to change altitude and observe the estimated radiation dose.
Why Does Radiation Dose Change with Altitude?
The radiation we receive in our daily lives primarily comes from "cosmic radiation" originating from space and "natural radiation" from naturally occurring radioactive materials on Earth. This simulator mainly focuses on cosmic radiation.
- Reduced Atmospheric Shielding: Earth's atmosphere acts as a shield, absorbing and scattering cosmic radiation. As altitude increases, the atmosphere becomes thinner, reducing this shielding effect, which can lead to increased exposure to cosmic radiation.
- Influence of Earth's Magnetic Field: Earth's magnetic field deflects charged particles (radiation) coming from space, reducing the amount that reaches the surface. At higher altitudes, the protective effect of the Earth's magnetic field is relatively weaker, which can cause the radiation dose to increase.
Basis of Simulation Data
The radiation doses presented in this simulator are estimated values based on actual data measured at typical aircraft cruising altitudes (around 10-12 km). For example, this data is used to assess the annual radiation exposure for occupational groups like airline pilots and flight attendants, who spend long hours at high altitudes. While radiation doses can increase sharply at even higher altitudes (stratosphere, upper mesosphere), these are not typical flight altitudes.
Disclaimer: This simulator is a simplified model designed to help the general public easily understand how radiation dose changes with altitude. Actual radiation exposure can vary depending on various factors such as solar activity cycles, strength of the Earth's magnetic field, geographical location (latitude), and flight duration. Please be aware that the results of this simulation cannot replace medical advice or precise scientific data.