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• Magnetogram Users Group [MUG]
• Scientific Advisory Committee [SAC]
• SPD Summer School on Helioseismology
– http://www.hao.ucar.edu/summerschool
• SoGO’06
&
“Joint Discussion” @ IAU GA
• NSF “Senior Review”
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Magnetogram Users Group
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NSF “Senior Review”
• GONG Classic
• Outstanding Scientific Questions
– Origin of Solar & Stellar Magnetism
• GONG++ started in 2001
– Local Helioseismology – 4D Structures
– Continuous, high cadence magnetograms
• Complementarity with SDO/HMI
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Vorticity Vector, Enstrophy,
and
Kinetic Helicity Density
averaged over
37 Carrington rotations
CR 1979 − 2015
Vertical Vorticity
ωz ≈ ∂vx / ∂y
Meridional Vorticity
ωy ≈ ∂vx / ∂z
Zonal Vorticity
ωx ≈ ∂vy / ∂z
Enstrophy
2
2
2
ωx + ωy + ωz
Kinetic Helicity Density
v
ω
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GONG FarSide Project Status
Farside code running at the sites
Bad cal image checking implemented
●
Temporally-averaged cal implemented
●
Generating 215x215 Gaussian-smoothed velocity images
●
Transferred "real time" to Tucson
to be done
●
Dealing with instrument anomalies like maintenance periods.
problems
●
UD relay has been an issue, hopefully under control now.
●
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GONG FarSide Project Status
Near real time transfer
statistics
date
BB
CT
LE
ML
TD
UD
050419
050420
050421
050422
050423
050424
050425
050426
050427
050428
050429
050430
050501
050502
100
100
100
100
no data
no data
100
100
100
100
100
100
100
100
100
100
100
100
100
no data
100
no data
100
100
100
100
100
100
95
98
100
100
100
100
100
100
100
no data
no data
100
no data
no data
100
100
100
100
100
97
100
100
73
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
no data
no data
no data
no data
no data
no data
no data
no data
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GONG FarSide Project Status
Farside Pipeline
●
Basic image-arrival checking, but no QA check
●
Merging module implemented satisfactorily
●
Pipeline front-end module, currently under development
to be done
●
Color table
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GONG FarSide Project Status
New version of the FarSide code
●
●
Adapted to use GONG images.
Ability to create full-hemisphere far side maps – NOT checked yet with low
resolution data.
●
Revised interpretation of header keywords
●
Portable and CVS control
●
Precision differences between different platforms (to be investigated)
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GONG FarSide Project Status
Near-real-time compressed images: The Gaussian data binning
• Compressing from 860x860 --> 215x215
• Sigma: 3.3 pixels
• Truncation radius: 9 pixels
Full resolution
Gaussian Smoothing
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Box-car
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GONG FarSide Project Status
Comparison between GONG and MDI Far Side maps
• From 10 March 2005 – to 19 March 2005
• http://www.noao.edu/noao/staff/irenegh/FarSide/NearRealTime/NearRealTime.htm
Phase correction:
• GONG: 177˚
• MDI: 160˚
GONG average
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