Modeling Solar Cycles 15 to 21 Using a Flux Transport Dynamo
Abstract
Context. The Sun's polar fields and open flux around the time of activity minima have been considered to be strongly correlated with the strength of the subsequent maximum of solar activity.
Aims. We aim to investigate the behavior of a Babcock-Leighton dynamo with a source poloidal term that is based on the observed sunspot areas and tilts. In particular, we investigate whether the toroidal fields at the base of convection zone from the model are correlated with the observed solar cycle activity maxima.
Methods. We used a flux transport dynamo model that includes convective pumping and a poloidal source term based on the historical record of sunspot group areas, locations, and tilt angles to simulate solar cycles 15 to 21.
Results. We find that the polar fields near minima and the toroidal flux at the base of the convection zone are both highly correlated with the subsequent maxima of solar activity levels (r = 0.85 and r = 0.93, respectively). Conclusions. The Babcock-Leighton dynamo is consistent with the observationally inferred correlations.
Subject
magnetohydrodynamics (MHD)
Sun: dynamo
Sun: surface magnetism
coronal magnetic-fields
deep meridional flow
white-light images
differential rotation
active regions
convection zone
sunspot groups
tilt angles
Sun
simulations
Güneş: dinamo
Güneş: yüzey manyetizi
koronal manyetik alanlar
derin meridyen akış
beyaz ışıklı resimler
diferansiyel dönüş
aktif bölgeler
konveksiyon bölgesi
güneş lekesi grupları
eğim açısı
Güneş
simülasyonlar
Sun: dynamo
Sun: surface magnetism
coronal magnetic-fields
deep meridional flow
white-light images
differential rotation
active regions
convection zone
sunspot groups
tilt angles
Sun
simulations
Güneş: dinamo
Güneş: yüzey manyetizi
koronal manyetik alanlar
derin meridyen akış
beyaz ışıklı resimler
diferansiyel dönüş
aktif bölgeler
konveksiyon bölgesi
güneş lekesi grupları
eğim açısı
Güneş
simülasyonlar
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