Department of Climate and Space Sciences and Engineering in the College of Engineering at the University of Michigan


Professor Kasper’s research shows shorter cycles on the Sun

Posted: April 9, 2015

Professor Kasper’s research shows shorter cycles on the Sun

Associate Professor Justin Kasper is a co-author of a recent paper that found evidence of seasonal, year-long cycles on the Sun.

The paper is the subject of a recent story on that states, “Our sun is constantly changing. It goes through cycles of activity – swinging between times of relative calm and times when frequent explosions on its surface can fling light, particles and energy out into space. This activity cycle peaks approximately every 11 years. New research shows evidence of a shorter time cycle as well, with activity waxing and waning over the course of about 330 days.”

Scott W. McIntosh of the High Altitude Observatory at NCAR is the lead author of the paper, which was published in Nature Communications.

“What we’re looking at here is a massive driver of solar storms,” McIntosh said. “By better understanding how these activity bands form in the sun and cause these seasonal instabilities, we can greatly improve forecasts of space weather.”

To read the full piece, please visit

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