MHD model in HMI pipeline

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MHD model in HMI pipeline
HMI/AIA science team meeting Sep. 8 -- 11, 2009
Stanford, CA
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MHD models

• Input as initial boundary values, the
  magnetic field data, in various formats and
  cadences, (and plasma parameters from
  observations)
• Output theoretical determination /
  extrapolation of
• 3D magnetic and plasma structures, above the
  photosphere, and in interplanetary space
  including the high heliographic latitude region,
• Temporal evolutions, and
• Views from various directions
• MHD models can give unobservables
• MHD models can give observables by independent
  observations

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Input, (quasi-) real-time base

• EOF (experiment operations facility) preliminary
  data
• Synoptic / synchronic maps/frames
• Global MHD/non-MHD models
• Disk data
• (remapped in coordinates corrected in accordance
  with geometry solar differential rotation)
• Local patch maps
• Local MHD/non-MHD models
• AR
• remapped

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Daily MHD model (steady-state)

• Assumption Polytrope in Eq. of state
• Spatial resolution 5 degree
• A few hours on 8-CPU(core) system.
• With characteristics eq. matching fixed Br
  condition, the quasi-steady state be obtained
• Outputs
• Open/closed coronal field structures
• Rough estimation of flow speed and density
• Magnetic field polarity at distant regions
• Views from various directions
• etc.

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Daily MHD model (steady-state)

• Assumption Polytrope in Eq. of state
• Spatial resolution 5 degree
• A few hours in 8CPUs system.
• With characteristics eq. matching fixed Br
  condition, the quasi-steady state be obtained
• Outputs
• Open/closed coronal field structures
• Rough estimation of flow speed and density
• Magnetic field polarity at distant regions
• Views from various directions

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Daily MHD model (steady-state)

• Assumption Polytrope in Eq. of state
• Spatial resolution 5 degree
• A few hours in 8CPUs system.
• With characteristics eq. matching fixed Br
  condition, the quasi-steady state be obtained
• Outputs
• Open/closed coronal field structures
• Rough estimation of flow speed and density
• Magnetic field polarity at distant regions
• Views from various directions

7
Daily MHD model (steady-state)

• Assumption Polytrope in Eq. of state
• Spatial resolution 5 degree
• A few hours in 8CPUs system.
• With characteristics eq. matching fixed Br
  condition, the quasi-steady state be obtained
• Outputs
• Open/closed coronal field structures
• Rough estimation of flow speed and density
• Magnetic field polarity at distant regions
• Views from various directions

8
Daily MHD model (steady-state)

• Assumption Polytrope in Eq. of state
• Spatial resolution 5 degree
• A few hours on 8-CPU system.
• With characteristics eq. matching fixed Br
  condition
• The quasi-steady state be obtained
• Outputs
• Open/closed coronal field structures
• Rough estimation of flow speed and density
• Magnetic field polarity at distant regions
• Views from various directions
• etc.

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Daily MHD model (with time-varying Br)

• Assumption Polytrope in Eq. of state
• Spatial resolution 5 degree
• A few hours on 8-CPU system.
• With characteristics eq. matching time-varying Br
• Under development
• Outputs time-evolutions of
• Open/closed coronal field structures
• Rough estimation of flow speed and density
• Magnetic field polarity at distant regions
• Views from various directions
• etc.

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• Surface magnetic field
• From North pole, lon.90 dgr., south pole

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• movie

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Models contribution

• surface flow FLCT, ILCT, DAVE4VM, etc.
• Complete or completed by induction Eq.
• ier(int)flct(argc,argv,deltat,deltas,sigma,nnx,nn
  y,f1,f2,ef,ef,vx,vy,evx,evy,vm)
• for quick-look purpose and/or
• with calibrated data.
• PSIs MHD contribution

?t Brrot (v ? B)r
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