Magnetic Helicity as a Predictor of the Solar Cycle
1294 views
08.12.2017
Co-author
Mitchell Berger
Affiliation
Author
Main category
Natural Sciences (Physics)
Abstract
It is known that the poloidal field is at its maximum during solar minima, and that its behaviour during this time acts as a strong predictor of the strength of the following solar cycle. This relationship relies on the action of differential rotation (the Omega effect) on the poloidal field, which generates the toroidal flux observed in sunspots and active regions. We measure the helicity flux into both the northern and southern hemispheres using a model that takes account of the Omega effect, which we apply to data sets covering a total of sixty years. We find that the helicity flux offers a strong prediction of solar activity up to 5 years in advance of the next solar cycle.
Further information
Further reading
Language
English
DOI
Do you have problems viewing the pdf-file? Download presentation here
If the presentation contains inappropriate content, please report the presentation. You will be redirected to the landing page.