Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh51b2013g&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SH51B-2013
Astronomy and Astrophysics
Astrophysics
[7524] Solar Physics, Astrophysics, And Astronomy / Magnetic Fields, [7536] Solar Physics, Astrophysics, And Astronomy / Solar Activity Cycle, [7544] Solar Physics, Astrophysics, And Astronomy / Stellar Interiors And Dynamo Theory, [7594] Solar Physics, Astrophysics, And Astronomy / Instruments And Techniques
Scientific paper
We present a family of simplified flux-transport type dynamo models that can be used for testing various data assimilation schemes. This family of models contain one, two or three layers in the vertical, and are in cartesian geometry. More layers allow more detailed representation of important dynamo processes, including transport by meridional flow, production of poloidal fields by the alpha-effect, and magnetic diffusivity that varies with depth. The models are capable of simulating resonance effects, which make them sensitive to variations in inputs by assimilation of data. The one-layer version of this family is closely related to that used by Kitiashvili & Kosovichev (2008) (ApJ 688,L49) to test Kalman filter methods on solar dynamo equations.
Dikpati Mausumi
Gilman Peter
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