Poster Open Access

Modeling Helioseismic Signatures of Meridional Circulation

Andrey Stejko; Alexander Kosovichev; Valery Pipin

We present the application of a new 3D global linearized acoustic algorithm (GALE). With the wide variance of inferred profiles of meridional circulation currently being made from similar observational data, we choose a "forward-modeling" approach to test the helioseismic signatures generated by several physics-based mean-field models of meridional velocities. We simulate the effect of realization noise in measurements in order to place a low-end baseline for whether it is possible to see the difference between single- and double-cell meridional circulation. With minimal parameter changes between the two regimes we show that it may not be possible two distinguish these profiles within the operational time-frame of HMI. We also test several other profiles in an attempt to use mean-field theory to help constrain inferences made through helioseismology inversions.

Files (1.2 MB)
Name Size
CS_poster_stejko.pdf
md5:192dae640136ea3d33e630835ff07003
1.2 MB Download
32
26
views
downloads
All versions This version
Views 3232
Downloads 2626
Data volume 30.2 MB30.2 MB
Unique views 2828
Unique downloads 2626

Share

Cite as