ILCTDerived Flows are Consistent with Induction Eqns Normal Component'

1
ILCT-Derived Flows are Consistent with Induction
Eqns Normal Component.
2
Can we extend ILCT to LOS data sets?
, where

• Near disk center, we can approximate BLOS ? Bz.
• Use LCT to get uLCT, with ??LOS??t to calculate
  uILCT that satisfies induction eqns normal
  component.
• To decompose ILCT flow, uILCT , into (vx, vy,
  vz), we need B? at photosphere but lack
  measured B?!
• But we can use B? from code an educated guess
  for initial condition, then from current time
  step.

3
The other components can also be specified.
Directly measured
Calculated by Boundary Code
Derived by ILCT
For t0, use NLFFF extrapolation for tgt0, use
codes current B
at photosphere, z 0
above photosphere, z gt 0
4
The other components can also be specified.
Directly measured
Calculated by Boundary Code
Derived by ILCT
For t0, use NLFFF extrapolation for tgt0, use
codes current B
5
Extending ILCT to LOS data sets, contd

• Long-duration data sets of MDI full-disk
  magneto- grams exist for most events in SOHO
  era!
• Initial B(x,y,z) can be given by combination of
  global PFSS model local NLFFF consistent with
• X-ray/EUV observations.
• In principle, can run data-driven simulations of
  almost all events in SOHO era!

6
Induction Equations Components
7
Demoulin Berger (Sol. Phys. 2003) Effect of
vertical motion on apparent horizontal motion U?

• Apparent horizontal motion can be either true
  horizontal motion, or vertical motion of a tilted
  field geometry.