Principal Component Analysis of the background and sunspot magnetic field during the cycles 21-23

Details Principal Component Analysis of the background and sunspot magnetic field during the cycles 21-23 Principal Component Analysis of the background and sunspot magnetic field during the cycles 21-23

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh11a1488z&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SH11A-1488

Astronomy and Astrophysics

Astrophysics

[7537] Solar Physics, Astrophysics, And Astronomy / Solar And Stellar Variability, [7544] Solar Physics, Astrophysics, And Astronomy / Stellar Interiors And Dynamo Theory

Scientific paper

We present analysis of latitudinal variations of solar background and sunspot magnetic field in the cycles 21-23. This allows to establish active latitudes in every solar cycle and detect two off-phase waves in the background magnetic field which define the solar activity andappearance of sunspots on the solar surface. Some implications on the solar dynamo theories is discussed

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