Solar supergranulation-scale simulations

Details Solar supergranulation-scale simulations Solar supergranulation-scale simulations

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd..17e..15s&link_type=abstract

Highlights of Recent Progress in the Seismology of the Sun and Sun-Like Stars, 26th meeting of the IAU, Joint Discussion 17, 23

Physics

1

Scientific paper

In order to understand the nature of supergranulation and provide a test bed for calibrating local helioseismic methods we have performed a realistic solar surface convection simulation on supergranulation scales (48 Mm wide by 20 Mm deep), whose duration is currently 48 hours. The simulation includes f-plane rotation and develops a surface shear layer. There is a gradual increase in the horizontal scale of upflows with increasing depth due to merging of downflows advected by the larger scale diverging upflows from below. There is a rich spectrum of p-modes excited in the simulation. This data set is available for studying solar oscillations and local helioseismic inversion techniques. We will shortly be initiating an even larger- scale simulation, 96 Mm wide, containing an active region.

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