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HMI Data Products: Magnetic Field & Velocity Maps for Solar Research

Explore detailed HMI data including magnetic field maps, sound speed maps, velocity maps, and processing schedules for solar studies. Access high-resolution synoptic maps, magnetic field extrapolations, and wave phenomena analyses.

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HMI Data Products: Magnetic Field & Velocity Maps for Solar Research

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  1. HMI Data Products (Magnetic Field Part)

  2. Internal rotation Ω(r,Θ) (0<r<R) Internal sound speed, cs(r,Θ) (0<r<R) Full-disk velocity, v(r,Θ,Φ), And sound speed, cs(r,Θ,Φ), Maps (0-30Mm) Carrington synoptic v and cs maps (0-30Mm) High-resolution v and cs maps (0-30Mm) Deep-focus v and cs maps (0-200Mm) Far-side activity index Line-of-Sight Magnetic Field Maps Vector Magnetic Field Maps Coronal magnetic Field Extrapolations Coronal and Solar wind models Brightness Images HMI – JSOC-SDP Pipeline Processing Data Product HMI Data Spherical Harmonic Time series To l=1000 Heliographic Doppler velocity maps Filtergrams Mode frequencies And splitting Local wave frequency shifts Ring diagrams Doppler Velocity Level-0 Time-distance Cross-covariance function Tracked Tiles Of Dopplergrams Wave travel times Egression and Ingression maps Wave phase shift maps Stokes I,V Line-of-sight Magnetograms Level-1 Stokes I,Q,U,V Full-disk 10-min Averaged maps Vector Magnetograms Fast algorithm Vector Magnetograms Inversion algorithm Tracked Tiles Tracked full-disk 1-hour averaged Continuum maps Continuum Brightness Solar limb parameters Brightness feature maps

  3. Magnetic Processing Scheduling There are four Schedules for Magnetic Field data processing • Quick Look • Routine processing on data available within minutes of observation • Standard • Routinely completed for all definitive data on regular cadence (e.g. Vector B) after about 25 hours. • On Demand • Completed for small fraction of data when interesting things happen or whenever requested by a qualified user. • On Request • Products, such as high-resolution time series of MHD model solutions, will be generated as resources allow. Completed when system resources allow SDO SUMMER SCHOOL, 2010

  4. Definitive Standard Science Data Products – HMI Magnetic Field Images • Pipeline • 45-second • Magnetic line-of-sight velocity on full disk • Continuum intensity on full disk • Vlos on full disk • 12-minute • Inverted vector B on full disk • Disambiguated B on selected patches • 12 -hour • Disambiguated vector field on full disk • On Demand • 3-second level 1.5 filtergrams (limited number) • 3-minute (180-second) spatially binned disambiguated vector field patches • 6-minute (360-second) disambiguated patches • 12-minute full-disk disambiguated vector field • On Request • 90-second disambiguated patches • 90-second IQUV • Anything else SDO SUMMER SCHOOL, 2010

  5. Additional Magnetic Field Model Products • Produced as Standard • On-demand, and • On-request products • Automated Identification of AR Patches and other features • Synoptic & Synchronic Maps & Frames • PFSS Model – Various resolutions • NLFFF Model – AR patches, daily • MHD Models • Daily low-resolution • Monthly and major events in hi-res • Open Field Foot Point Maps • Surface Flow Maps • ILCT, FLCT DAVE4VM

  6. HMI Space Weather and Quick-Look Browsing Products Generally HMI space weather and quick-look browsing products are computed in near real time from quick look SDO data. They may be used for space weather forecasting or real time monitoring and display. They should not be used for scientific analysis, except perhaps to compare the quality of preliminary and definitive products. HMI space weather and quick-look products will be coordinated with the Heliophysics Events Knowledge Base. These data products will complement the AIA Quick Look Browse Products DRAFT LIST – Comments welcome! This list is preliminary and is not a commitment. Each product must have a prospective user. Magnetic Products Full Disk Line-of-sight magnetograms (Blos) - 90-sec; 1K*1K resolution Vector magnetogram, inverted & disambiguated - 12 hour Movie of Blos - 12-day history, updated each 90 seconds Active Region Patches (ARPs) Identification of active region patches - 12 minute (hourly?) Vector magnetic field in major ARPs, disambiguated - 12 minute Time series of major ARP indices (since appearance, updated every 12 min Location, orientation, separation, total flux, net flux, delta-B,helicity, non-potentiality, complexity, field gradient, other Alerts based on indices Increased time resolution during alerts Blos at full spatial resolution in ARPs - updated each 90 seconds

  7. HMI Space Weather and Quick-Look Browsing Products - continued Synoptic Maps Synchronic Frame - radial field estimate - 96-minute, reduced resolution Evolved Carrington/Synchronic map - 6 hour Far Side Products Far side active region map - daily Movie of global sun activity - 54-day, updated daily Other Products Full-disk Velocity – averaged snapshot every 12 minutes Full-disk Intensity - 12 minute average Full-disk Line Depth - 12 minute average Full-disk and ARP Overlays of AIA and HMI Blos - 90-sec update, movie Alerts & Indices - 12 minute Irradiance, mean field, ARP intensity/flare detection Movies of ARPs in Intensity (updated hourly) Horizontal Flow from LCT in ARPs (daily) Coronal Field Models (daily, weekly) Global - PFSS, Hybrid - HCCSSS, MHD ARPs/Local - PF, NLFFF, MHD Field line maps, source surface maps, AIA overlays, MHD quantities Magnetic field global harmonic coefficients - daily 1 AU Predictions - WSA velocity, polarity, field strength, etc (daily) Coronal Holes - open foot points (daily) Polar Field Estimate (monthly) Note: Not all products are produced by HMI.

  8. Line-of-sight Field Products

  9. Vector Field Products

  10. Vector Magnetic Field For AR1057 And Disambiguation (R. Centeno Eliot, J. Borrero, S. Tomczyk, K.D. Leka, G. Barnes, A. Crunch, T. Hoeksema, K. Hayashi, X. Sun) Azimuth Transverse field Line-of-sight field

  11. Vector Magnetic Field from Mar 29 Sunspot(K. Hayashi, R. Centeno Eliot, et al.)

  12. Vector Magnetic Field Courtesy HMI Team and K. Hayashi

  13. Product—Non-linear Force Field Model NLFFF Model Result (courtesy: T. Wiegelmann & X. Sun)

  14. Product—Velocity Field Black - vertical magnetic field, Red - horizontal magnetic field, Blue, Horizontal plasma velocities. DAVE4VM Result Showing Horizontal Velocity Pete Schuck, Karin Muglach, Xudong Sun

  15. Product—Synoptic Map • Synoptic map of the line-of-sight magnetic field for CR2096. • About 50,000 line-of-sight magnetograms are used to produce this map. • Map size is 3600x1440; • Y-axis is in Sin(latitude).

  16. Product-Solar Wind Speed and IMF(Xudong Sun) Courtesy Xudong Sun

  17. Product-MHD Solution(K. Hayashi) Courtesy K. Hayashi

  18. Data Processing Status • Lev0 processing is working well • Telemetry to images • Lev1 processing is working but needs refinement • Flat field, limb finding, bad pixel detection, energetic particle detection • Some shortcomings being worked on. • Observables are being generated to hmi_test series • V, M, Ic, Ld, Lw, IQUV • Available to all • Processing is inconsistent as improvements are added without reprocessing • Higher level products being worked on • Includes vector field inversions and local/global helioseismology • http://jsoc.stanford.edu

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