D-1 : M3-Magnetic Field Data Products

Data Product Development Session Chairs: R. Larsen/Y. Liu Status: [draft] D-1 : M3-Magnetic Field Data Products AIA/HMI Science Meeting

HMI Science (Magnetic Field) • Sources and drivers of solar activity and disturbances; • Evolution of small-scale magnetic elements (coronal heating); • Emergence of magnetic flux and solar transient events; • Magnetic configuration and mechanisms of solar flares and CMEs. • Links between the internal processes and dynamics of the corona and heliosphere; • Complexity and energetics of solar corona; • Large-scale coronal field; • Coronal magnetic structure and solar wind. • Precursors of solar disturbances for space-weather forecast. • Determination of magnetic cloud Bs events. AIA/HMI Science Meeting

HMI Magnetic Field Data Products LEV.0.5 2. “structure minimization” method (Georgoulis et al, 2004). 1. “minimum” energy method (Metcalf, 1994). LEV.1.0 • Optimization approach (Wheatland et al, 2000); • etc. • ILCT (Welsch et al, 2004); • “The minimum energy fit” (Longcope, 2004); • 3. “induction equation” (Kusano et al, 2002). Coronal magnetic fields. (NLFFF, MHD) LEV.1.5 Plasma flow. Synoptic maps. PFSS & HCCSSS models Coronal/Heliospheric fields. Connectivity & separatrix Energy flux through the photosphere. Helicity flux through the photosphere. MHD simulation Dynamics of coronal/helio. structure. Topology structure Emerging flux effect Surface flow effect Solar transients Prediction of IMF & solar wind speed. Empirical estimate; MHD simulation. MHD simulation

HMI Magnetic Field Data Products HAO calibration group by Tomczyk et al 180 ambiguity solution group by Metcalf et al. Coronal field reconstruction group by Schrijver et al. Working group to be formed by Hoeksema et al Working group to be formed by Welsch et al ??? Coronal magnetic fields. (NLFFF, MHD) Plasma flow. Synoptic maps. Need a working group? Coronal/Heliospheric fields. Connectivity & separatrix Energy flux through the photosphere. Helicity flux through the photosphere. • Two working groups: • PFSS-like models group by Hoeksema ? • MHD simulation groups • Local scale by Abbett & Wu??? • Global scale by Linker et al??? Need a working group? If yes, who will organize one? Longcope??? Dynamics of coronal/helio. structure. Prediction of IMF & solar wind speed.

D-2: HMI data products • What data products must we produce? • Vector magnetic field on the photosphere (180 degree ambiguity resolved) • Synoptic map of vector magnetic field (need a working group, play with SOLIS data) ; • Coronal magnetic field (reconstructed from NLFFF model or MHD simulation); • Coronal/heliospheric fields (stable and dynamic) from PFSS-like models and MHD simulation (need working groups on PFSS and MHD); • Space weather-related products: solar wind speed, IMF, orientation of MC from PFSS-like models and MHD simulation (working groups for PFSS-like approach and HMI simulation approach); • Topology of magnetic field (plus) (need working group); • Plasma flow on the photosphere (plus) (need working group); • Additional products proposed during meeting. AIA/HMI Science Meeting

D-2: HMI data products (Cont.) • Assessment of required resources, etc (The proposed codes need to be examined against the following issues): • Pipeline software • Analysis software/studies • Supporting software/models • Computational requirements (run time estimates, system requirements, …) • Storage requirements: size, duration, etc. • Access: web, archive, logs, search methods, etc. AIA/HMI Science Meeting

D-3: Implementation • What codes do we have now and what codes need to be developed? • : inversion algorithm; MDI-like algorithm. • Define key milestones, test procedures, and target dates. AIA/HMI Science Meeting

D-3: Implementation • What codes do we have now and what codes need to be developed? • 180 degree ambiguity solution: algorithm and code already exist, but processing speed needs to be improved. • Define key milestones, test procedures, and target dates. • SOLIS data will be test data (evaluate the accuracy and efficiency). • Work group already formed! AIA/HMI Science Meeting

D-3: Implementation • What codes do we have now and what codes need to be developed? • synoptic map of vector magnetic field: LOS component map is easy, but need to face challenge on transverse component map. • Define key milestones, test procedures, and target dates. • SOLIS data will be test data. • Need to form a working group! AIA/HMI Science Meeting

D-3: Implementation • What codes do we have now and what codes need to be developed? • coronal magnetic field: NLFFF/MHD simulation; challenge: too slow. • Define key milestones, test procedures, and target dates. • A working group has formed. AIA/HMI Science Meeting

D-3: Implementation • What codes do we have now and what codes need to be developed? • coronal/heliospheric fields (stable and dynamic): PFSS-like/MHD simulation; challenge: modeling transients. • Define key milestones, test procedures, and target dates. • Need one or two groups. AIA/HMI Science Meeting

D-3: Implementation • What codes do we have now and what codes need to be developed? • space weather related products (solar wind speed, IMF, orientation of magnetic clouds): PFSS-like/MHD simulation. • Define key milestones, test procedures, and target dates. • Need working groups? AIA/HMI Science Meeting

D-3: Implementation • What codes do we have now and what codes need to be developed? • velocity field on the photosphere: need to evaluate algorithms. • Define key milestones, test procedures, and target dates. • Need working groups? AIA/HMI Science Meeting

D-1 : M3-Magnetic Field Data Products