Physics and Astronomy
8 years ago

Magnetic field at solar surface drives over 90% of irradiance variations.

Advances in Space Research
How much of the solar irradiance variations is caused by the magnetic field at the solar surface?
S. K. Solanki, M. Fligge

Paper Summary

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The magnetic field at the surface of the Sun plays a significant role in causing variations in solar irradiance. Studies show that magnetic features on the Sun's surface contribute to over 90% of the changes in solar irradiance on a short-term basis and at least 70% on a longer time scale. If certain corrections are made to the data, these magnetic features could be responsible for over 90% of the variations in solar irradiance over the course of the solar cycle.