Science Data Products – HMI Magnetic Field Images Pipeline 45-second

1. The Helioseismic & Magnetic Imager Magnetic Pipeline J. Todd Hoeksema for the HMI Magnetic Team HMI Science Analysis Plan – Magnetic Topics HMI Data Filtergrams Magnetic Data Products AKosovichev 1-1A Tachocline AKosovichev 2-1C Meridional Circulation AKosovichev 3-1B Differential Rotation Magnetic Observables Line-of-Sight Magnetic Field Maps HMI Vector Field Pipeline & Products JBeck 4-1D Near-Surface Shear Layer THoeksema Increase s/n: • Standard HMI resolution • Rebinned data (retains temporal resolution) • Averaged data (retains spatial resolution) EBenevolenskaya, TBai 5-2A Activity Complexes, Cycle Line-of-sight Magnetograms THoeksema 6-2B Active Regions Vector Magnetic Field Maps TBai 7-2C Sunspots • Vector magnetic field in active regions: • In heliographic coordinates • In image coordinates YLiu 8-2D Irradiance Variations RBush Magnetic Observables THoeksema, JSchou, HAO YLiu HMI Data 9-3A Magnetic Shear LM, KHayashi 10-3B Flare/CME Mag. Config Filtergrams • Full disk vector magnetic field: • In image coordinates • In spherical coordinates Coronal Magnetic Field Extrapolations (non MHD) YLiu, LM Stokes I, Q, U, and V; Vector Magnetograms (|B|, inclination, azimuth, …) 11-3C Flux Emergence Vector Magnetic Field Maps KHayashi, LM 12-3D Magnetic Carpet+Heating Vector Magnetograms YLiu, Schrijver Schrijver, YLiu 13-4A Coronal Energetics AIA]1 KHayashi YLiu, JSchou, *HAO, CORA 14-4B Large-scale B, Ph+Cor Surface Plasma Flows • Synoptic maps of vector field • (B_r, B_theta, B_phi): • Standard synoptic charts; • Synoptic frames; • Daily update synoptic maps. KHayashi Field Inversion (10m) 15-4C Solar Wind + Evol, Struct PScherrer JBeck, YLiu, 16-5A Far-side Activity Evolution Calibration and Correction of Filtergrams 180 Degree Ambiguity Solver • Fast (potential or lfff); • Slower but better. TBai 17-5B Predicting A-R Emergence XPZhao 18-5C IMF Bs Events Continuum Brightness Coronal and Solar wind Properties Lundstedt 19 Topology Structure over AR RBush, JSchou EBenevolenskay XPZhao, KHayashi 20 B-Polar, Large/Small Int HINODE Spectropolarimetric Magnetic Field Inverted with HMI-like Algorithm by S. Tomczyk & J. Borrero (HAO) The three panels show Inclination, Azimuth & Magnetic Field Strength as observed May 7, 2007 0 180 -180 180 0 3097 ABSTRACT The Helioseismic and Magnetic Imager (HMI) will provide frequent full-disk magnetic field data after launch of the Solar Dynamics Observatory (SDO), currently scheduled NET November, 2009. 16 megapixel line-of-sight magnetograms (Blos) will be recorded every 45 seconds. A full set of polarized filtergrams needed to determine the vector magnetic field requires 90 seconds. Quick-look data will be available within a few minutes of observation. Quick-look space weather and browse products must have identified users, and the list currently includes full disk magnetograms, feature identification and movies, 12-minute disambiguated vector fields in active region patches, time evolution of AR indices, synoptic synchronic frames, potential and MHD model results, and 1 AU predictions. A more complete set of definitive science data products will be offered about a day later and come in three types. ‘’Pipeline products,’’ such as full disk vector magnetograms, will be computed for all data on an appropriate cadence. A larger menu of ‘’On Demand’’ products, such as Non-Linear Force Free Field snapshots of an evolving active region, will be produced whenever a user wants them. Less commonly needed ‘’On Request’’ products that require significant project resources, such as a high resolution MHD simulation of the global corona, will be created subject to availability of resources. Further information can be found at the SDO Joint Science Operations Center web page, jsoc.stanford.edu SPD 2009: 17.01 • 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 – This list is preliminary and is not a commitment. • Each product must have a prospective user. • Comments welcome! • 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 • 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 • 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 - snapshot every 12 minutes • Full-disk Intensity - 12 minute • Full-disk Line Depth - 12 minute • 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. • Magnetic Processing Scheduling • There are four classes of Magnetic Field data processing • Quick Look • Routine processing on data available within minutes of observation • Standard • Routinely completed for all data on regular cadence (e.g. Vector B) • On Demand • Completed for small fraction of data when interesting things happen or whenever requested by a qualified user (HiRes MHD time series for a big flare & CME campaign • On Request • Products, such as high-resolution time series of MDH model solutions, will be generated as resources allow. Completed when system resources allow • 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 • 3-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 in 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 • Magnetic Field Model Products • Produced as Standard • On-demand, and • On-request products • Automated Identification of AR • Patches and other features • PFSS Model – Various resolutions • NLFFF Model – AR patches, daily • MHD Models • – Daily low-resolution • – Monthly major events in hi-res • Open Field Foot Point Maps • Surface Flow Maps • – ILCT, FLCT DAVE4VM