1. holography of solar dynamics Doug Braun CoRA/NWRA

2. Braun LoHCo Feb 20042 long term goals nature & depth of supergranulation meridional circulation and its variation with time other large-scale flows and correlation with activity flows, travel-time perturbations in tachocline acoustic properties of solar poles

3. Braun LoHCo Feb 20043 progress report developing software for routine “full- disk” Doppler-sensitive holography analysis of CR 1988 for LoHCo –MDI and GONG comparisons comparisons with ring-diagram results systematic effects, artifacts

4. Braun LoHCo Feb 20044 lateral-vantage holography egression, ingression: correlation:

5. Braun LoHCo Feb 20045 Doppler diagnostics 4 egressions and 4 ingressions: 4 correlations: WE N S

6. Braun LoHCo Feb 20046 should invert correlation differences for flows are proportional to “flows” (really some weighted depth-average) For now, assume correlation phases differences

7. Braun LoHCo Feb 20047 full-disk phase-difference signatures

8. Braun LoHCo Feb 20048

9. 9 analysis to date MDI –CR1988; 8 “days” (2002 Mar 30-Apr 7) –CR1948; 1 “day” (1999 Apr 20) GONG –CR1988; 2 “days” (2002 Mar 30-31)

10. Braun LoHCo Feb 200410 geometry Resolution limited by diffraction –spatial averaging at variety of scales 60° Postel projections –tracked at Carrington rate 3x3 tiling with 40° spacing Snodgrass rate subtracted –(except where noted)

11. Braun LoHCo Feb 200411 small scale flows MDI data, focus depth=3Mm –0°.5 spatial averaging supergranulation sunspots (outflows) active regions, plages, emerging region (inflows)

12. Braun LoHCo Feb 200412 supergranulation and inflow towards plage

13. Braun LoHCo Feb 200413 supergranulation: horizontal divergence

14. Braun LoHCo Feb 200414 supergranulation movie 1: 7 “days” (1 day=27.7hr)

15. Braun LoHCo Feb 200415 supergranulation movie 2: rapid, forward & back

16. Braun LoHCo Feb 200416 outflows in sunspot moats

17. Braun LoHCo Feb 200417 emerging-region inflow

18. Braun LoHCo Feb 200418 intermediate scale flows MDI & GONG – focus depth=3-30Mm(MDI), 7-30 (GONG) –  5° spatial averaging limb artifacts, MDI/GONG comparisons horizontal divergence vertical vorticity

19. Braun LoHCo Feb 200419 movie: MDI flow averages at different focus depths

20. Braun LoHCo Feb 200420 movie: GONG flow averages vs. depth

21. Braun LoHCo Feb 200421 GONG vs MDI scatter-plot comparisions red diamonds= points within central 40°x40°

22. Braun LoHCo Feb 200422

23. Braun LoHCo Feb 200423

24. Braun LoHCo Feb 200424 movie: horizontal divergence with time; association with active regions

25. Braun LoHCo Feb 200425 movie: magneogram, horizontal divergence, vertical vorticity

26. Braun LoHCo Feb 200426 longitude-averaged flows MDI/GONG comparison –differential rotation vs depth –meridional flow vs depth Snodgrass rotation has not been subtracted for these plots

27. Braun LoHCo Feb 200427 W flow N flow movie: MDI/GONG comparison, longitude-averaged flows

28. Braun LoHCo Feb 200428 residual longitude-averaged flows (GONG-MDI) W flow N flow

29. Braun LoHCo Feb 200429 Holography/ring-diagram comparisons flows at 3 Mm averaged over 15° diameter apodization disks 7°.5 spacing ring-diagram RLS inversions courtesy D. Haber

30. Braun LoHCo Feb 200430 movie: holography, ring-diagram comparison 2002 Mar 30

31. Braun LoHCo Feb 200431

32. Braun LoHCo Feb 200432

33. Braun LoHCo Feb 200433 movie: holography/ring-diagram comparison 1999 Apr 20

34. Braun LoHCo Feb 200434

35. Braun LoHCo Feb 200435