Descriptive Summary of Magnetic Field Modules
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HMI Pipeline -- Module Table |
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Vector Magnetic Field Modules |
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Module Link |
Summary |
Input |
Output |
Typical Cadence |
Options |
Archive |
Status |
Heritage / Module Name |
DRMS |
Issues |
Coordinator |
Remarks |
Priority/Need Date |
V1 |
Perform a time average of IQUV polarization components with interpolation of input frames to centered time of interest |
Time, duration, Lev1 Filtergrams (on CCD coordinates) |
Time-Averaged IQUV (on CCD coordinates) |
12 Minutes |
Duration, Filtering |
No |
Stage 3 |
HMI Calibration |
No |
Temporal Anti-aliasing filter |
J. Schou |
Remap includes geometry and vector transform. See A1. |
High June |
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V2 |
Invert Stokes Parameters to determine vector magnetic field components at each CCD pixel; field not disambiguated. |
IQUV (on CCD coordinates) |
Bvec=Btotal,FF, inclination, azimuth(180), uncertainties (on CCD coordinates) |
12-minute |
Quick,Threshold |
Yes |
Stage 3 |
90% |
60% |
Earlier JSOC version worked |
R. Bogart, S. Tomczyk, J. Borrero, Y. Liu |
Disk/CCD geometry, angles relative to Line of Sight |
High July |
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V3 |
Resolve ambiguity in the azimuthal field component inherent in inversion; will be model and method dependent |
Bvec (on CCD coordinates) |
360 Azimuth, uncertainty (on CCD coordinates) |
12-minute |
Patch,FD,Quick |
Yes |
Stage 2 |
80% |
50% |
Averaging vs. Sampling |
T. Hoeksema |
Disk/CCD geometry, angles relative to line of sight |
High July/August |
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V4 |
Merge multiple vector magnetic field images into a temporally averaged magnetogram in solar heliographic coordinates |
Assorted Bvec |
Bvec |
12-minute |
Options |
Yes |
Stage 1 |
Code |
DRMS |
Issues |
L. Svalgaard |
Assemble Vector Magnetogram from Heterogeneous Sources |
Low December |
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V5 |
Transform magnetic field in CCD image coordinates to proper local rectilinear heliographic coordinates suitable for export |
Bvec |
(on CCD coordinates) Bx,By,Bz; Uncertainties (local on a 2D projection plate with the solar north up) |
On Export |
Options |
No |
Stage 1 |
Code |
DRMS |
Issues |
Y. Liu |
Local heliocentric equatorial rectilinear vector B components for ARPs |
Medium October |
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V6 |
Transform image vector field to heliocentric global coordinate system suitable for export |
Bvec (on CCd coordinates) |
Br,Btheta,Bphi; Uncertainties (on heliographic coordinates) |
On Export |
Options |
No |
Stage 1 |
Code |
DRMS |
Issues |
Y. Liu |
Heliocentric equatorial spherical coordinate vector B components |
Medium October |
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V7 |
Transform from CCD image coordinates to heliocentric global coordinates suitable for export |
Bvec |
Btotal, Inclination, Azimuth; Uncertainties |
On Export |
Options |
No |
Stage 1 |
Code |
DRMS |
Issues |
Y. Liu |
Btot and angles relative to heliocentric equatorial coordinates |
Medium October |
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V8 |
Convert from CCD Frame vector field to heliocentric vector field components |
Bvec, time (on CCD coordinates) |
Bvec HeliographicFrame |
12min |
Rotation Corrections |
No |
Stage 3 |
JV2Helio |
DRMS |
Differential Rotation, Vector averages |
X. Sun |
Magnetograms in Carrington and Heliographic coordinates |
Medium August |
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V9 |
Spatially average vector field components in a single CCD-frame image |
Bvec (on CCD coordinates) |
Bvec (on image coordinates with P angle removed, but retain B0 angle) |
On Export |
Anti-aliasing |
No |
Stage 3 |
DRMS |
Vector geometry |
J. Beck, X. Sun |
Better to invert averaged IQUV? |
High July |
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V10 |
Temporally average vector field components in CCD frames accounting for translation due to rotation |
Bvec (on CCD coordinates) |
Bvec (on image coordinates with P angle removed, but retain B0 angle) |
Hours |
Duration, Mapping |
No |
Stage 3 |
DRMS |
Rotation correction, Anti-aliasing |
J. Beck, X. Sun |
Better to invert averaged IQUV? |
High July |
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V11 |
Combine series of remapped heliographic vector field images into a standard Carrington synoptic map |
Bvec HeliographicFrame |
Br SynopticMap |
Per rotation |
Resolution, Rotation Correction, Averaging |
Yes |
Stage 2 |
Los, makesynop |
No |
Need to balance temporal scale of map and features |
Y. Liu, X. Zhao |
Radial Field |
Medium October |
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V12 |
Insert a remapped vector field magnetogram into [the center of] a synchronic synoptic map |
Bvec Magnetograms, SynopticMap, Time |
Hourly |
Averaging, Mapping |
No |
Stage 2 |
LoS |
DRMS |
Issues |
X. Zhao, J. T. Hoeksema |
Remark |
Medium October |
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V13 |
Insert [time-averaged] vector field magnetogram at [the left edge of] the current synchronic map |
SynopticMap, Bvec HeliographicFrame |
Daily |
Averaging, Rotation Correction |
Yes |
Stage 2 |
LoS |
DRMS |
Resolution,Averaging,Far Side |
X. Zhao, J. T. Hoeksema |
Input to regular global coronal modeling |
Medium October |
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V14 |
Convert standard synoptic vector field map into synchronic map for a particular time |
Bvec HeliographicFrame |
Vector SynopticMap |
Monthly |
Rotation Correction, Resolution |
Yes |
Stage 1 |
Code |
DRMS |
Sensibility of Global Bvec |
X. Zhao, J. T. Hoeksema |
Need to resolve users |
Low December |
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V15 |
Interpolate or extrapolate the unobservable polar magnetic field in a synoptic map from a longer time series |
Smoothed Polar Field, SynopticMap |
Monthly |
Extra/Inter -polation |
Yes |
Stage 3 |
IDL |
50% |
MDI algorithm doesn't apply |
X. Sun |
Remark |
Medium October |
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V16 |
Compute global harmonic coefficients of the magnetic field from a synoptic map |
Global Harmonic Coefficients |
On Demand |
Global,Local,Order |
Yes |
Stage 3 |
100% |
90% |
Need to use qdport |
X. Sun, X. Zhao |
Remark |
Medium October |
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V17 |
Compute global PFSS model of the coronal magnetic field from a synoptic map |
Coronal Field Simulation |
Daily |
Options |
Yes |
Stage 2 |
100% |
95% |
Issues |
X. Sun, X. Zhao |
Remark |
Medium October |
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V18 |
Compute [high resolution] local potential magnetic field in corona overlying an active region patch |
ARP Br |
Local Coronal Field |
12-minute? |
option : (1) pixel size of input map (2) which method to use? |
Yes ? |
Stage 3 |
(1)slow iterative Laplace solver, 100% (2) Green Function 100% (3) FFT method to be tested |
70% |
Need to develop c-wrapper including part to specify patch data. Method 1 is slow. Three methods give different answer because of differrent boundary condition. |
K. Hayashi |
Potential by-product of disambiguation |
High August |
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V19 |
Compute Non-linear Force Free Field Model of coronal field overlying an ARP |
Bx,By,Bz (local on a 2D projection plane with solar north up) |
Coronal Field in Cube |
Daily |
Options |
Archive |
Stage 2 |
Code |
DRMS |
Issues |
Y. Liu |
Remark |
Low January |
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V20 |
Determine local horizontal surface flows of magnetic and intensity features ( various methods) |
Bx,By,Bz Time Series (local on a 2D projection plane) |
Horizontal Velocity (on local heliocentric coordinates) |
Daily |
Options |
Yes |
Stage 2 |
Code |
DRMS |
Time interval, Experience with HMI data |
T. Hoeksema |
DAVE4VM, ILCT |
Low December |
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V21 |
Determine full-disk horizontal surface flows of magnetic and intensity features |
Blos Time Series (on heliographic coordinates) |
Horizontal Velocity (on heliographic coordinates) |
12min.? |
Options |
Yes ? |
Stage 3 |
FLCT 100% in C by G.F. Wrapper 95% in C/Fortran |
95% |
define the cadence (12min is ok?). |
K. Hayashi, G. Fisher |
FLCT |
Low November |
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V22 |
Compute solar wind velocity from synoptic field for space weather prediction |
Synoptic Maps |
Solar wind speed / IMF polarity |
Daily |
Options |
Archive |
Stage 2 |
50% |
50% |
New empirical function |
X. Sun, T. Hoeksema |
Remark |
Low January |
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V23 |
Compute active region characteristics overlying active region patches |
ARP Bvec, Vhorizontal (local, on a 2D projection plane with solar north up) |
Plasma & Magnetic Properties |
On request |
Options |
Yes |
Stage 2 |
Code |
DRMS |
Issues |
Abbett, Wu |
Link to external group codes |
Low March |
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V24 |
Compute time-evolving characteristics of the solar corona |
Coronal Parameters |
Daily,Monthly |
Options |
Yes |
Stage 3 and 4 |
90%. |
50% |
Details to be determined. Most of the codes are ready. |
K.Hayashi, J.Linker |
TVD-MUSCL, MARS-CORHEL |
Low December |
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V25 |
Compute heliospheric conditions out to 1 AU from synoptic frames |
Synchronic maps/frames |
Solar Wind Parameters |
Daily/Monthly |
Options |
Archive |
Stage 2 |
CORHEL |
DRMS |
Issues |
T. Hoeksema |
Coordinate with external group codes |
Low February |
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V26 |
Perform high-resolution modeling of coronal magnetic field overlying active region patches |
Bvec - ARP + Global |
Out |
(on demand) |
N/A |
No? |
Stage 1 |
(html) |
DRMS |
Issues |
K. Hayashi |
Link to external group codes |
Low March |
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V27 |
Compute space weather products from local active region patches |
ARP Bvec (local, on a 2D projection plane with solar north up) |
Activity Indices |
12-minute |
Options |
Yes |
Stage 1 |
Code |
DRMS |
Issues |
T. Hoeksema |
Alerts Possible |
Low December |
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V28 |
Compute Space-weather products from global synoptic magnetic field data |
Br Synchronic Maps/frames |
1 AU predictions |
Daily |
Options |
Yes |
Stage 1 |
Code |
DRMS |
Issues |
T. Hoeksema |
Remark |
Low December |
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Associated HMI Pipeline Modules |
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Module Link |
Summary |
Input |
Output |
Typical Cadence |
Options |
Archive |
Status |
Heritage / Module Name |
DRMS |
Issues |
Coordinator |
Remarks |
Priority/Need Date |
A1 |
Identify, locate, and track significant active regions on the solar disk |
HMI/AIA/EVE + Other Solar Observations |
Active Region Patch locations and boundaries |
12 minute |
Options |
Yes |
Stage 1 |
Code |
DRMS |
Interface with HEK |
T. Hoeksema |
M. Turmon, C. DeForest, J. Zhang |
High |
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A2 |
Spatially average in the proper way any HMI data product |
HMI Data Product |
DRMS Dataset |
On Demand |
Size, Anti-aliasing |
No |
Stage 2 |
Code |
DRMS |
Vector Field Averaging |
L. Svalgaard |
Remark |
High July |
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Line-of-Sight Magnetic Field Modules |
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Module Link |
Summary |
Input |
Output |
Typical Cadence |
Options |
Archive |
Status |
Heritage / Module Name |
DRMS |
Issues |
Coordinator |
Remarks |
Priority/Need Date |
L1 |
Compute line-of-sight magnetic field from filtergrams in circularly polarized light (MDI method) |
Circularly polarized filtergrams (on CCD coordinates) |
Line-of-Sight Magnetogram (on CCD coordinates) |
45 seconds |
None |
Yes |
Stage 3 |
HMI Test |
DRMS |
Issues |
J. Schou, S. Couvidat |
Remark |
High June |
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L2 |
Temporally and spatially average line-of-sight magnetic field images |
Magnetograms (on CCD coordinates) |
Magnetogram (on CCD coordinates) |
90s |
Cadence; spatial averaging |
No |
Stage 2 |
MDI Code |
DRMS |
Issues |
E. Benevolenskaya |
Develop various options |
High July |
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L3 |
Remap line-of-sight magnetic field images to heliographic coordinates |
Magnetogram (on CCD coordinates) |
Cadence |
Options |
Archive |
Stage 4 |
JV2Helio |
DRMS |
Issues |
L. Svalgaard |
Remark |
High June |
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L4 |
Combine magnetic images and perform temporal and spatial averaging |
Magnetograms (on CCD coordinates) |
Cadence |
Options |
Archive |
Stage 3 |
DRMS |
Issues |
J. Beck |
Remark |
High July |
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L5 |
Construct standard synoptic maps from line-of-sight magnetograms |
Cadence |
Options |
Archive |
Stage 4 |
MDI Code |
DRMS |
Issues |
Y. Liu |
Remark |
Medium July |
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L6 |
Construct line-of-sight synchronic frame from synoptic map and magnetogram |
Cadence |
Options |
Archive |
Stage 2 |
MDI Code |
DRMS |
Issues |
X. Zhao, T. Hoeksema |
Remark |
Medium August |
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L7 |
Construct daily synchronic map from line-of-sight magnetograms |
Cadence |
Options |
Archive |
Stage 2 |
MDI Code |
DRMS |
Issues |
X. Zhao, X. Sun |
Remark |
Medium August |
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L8a |
Compute ideal magnetogram from MDI data for comparison with HMI |
MDI magnetogram |
Ideal Magnetogram |
Cadence |
Resolution |
Archive |
Stage 3 |
Code |
DRMS |
Issues |
P. Scherrer |
Module needs development |
Medium September |
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L8b |
Compute ideal magnetogram from HMI data for comparison with MDI |
HMI magnetogram |
Ideal Magnetogram |
Cadence |
Resolution |
Archive |
Stage 1 |
Code |
DRMS |
Issues |
P. Scherrer |
Remark |
Medium October |
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L9 |
Compute mean solar magnetic field from HMI magnetogram |
Magnetogram |
Mean Field |
Cadence |
Options |
Archive |
Status 2 |
Code |
DRMS |
Issues |
L. Svalgaard |
Remark |
Low January |
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See ModuleTemplate