1 / 6

Global Rotation Inversions

Profile rotation vs latitude and depth Tachocline, Near-Surface Shear …. Monitor evolution during solar cycle Zonal Flows, Tachocline changes (?). Global Rotation Inversions. Global Rotation. Inversion codes exist RLS (Schou) OLA (Munk-Larsen)

declan
Download Presentation

Global Rotation Inversions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Profile rotation vs latitude and depth Tachocline, Near-Surface Shear … Monitor evolution during solar cycle Zonal Flows, Tachocline changes (?) Global Rotation Inversions

  2. Global Rotation • Inversion codes exist • RLS (Schou) • OLA (Munk-Larsen) • Models exist, but may need improving for high-degree modes • Need strategy to pick best regularization

  3. Global Rotation Inversions • Input (for each 72d or 108d [or whatever] spectrum): • Frequencies • Odd a-coefficients or splittings (up to say l=400??) – what peakfinding code? • Errors • Eigenfunctions (from model) • Regularization choice (standard or adaptive?) • Near-surface results from local helioseismology

  4. Global Rotation Inversions: Output • Rotation profile (W vs r, q) (CZ dynamics) • Errors • Averaging kernels (1 per target) (QA) • Inversion coefficients (1 set per target) (QA) • Correlation coefficients (QA) • RLS residuals (QA)

  5. Global Rotation Inversions -- extras • More than one inversion code (OLA?) • Custom inversions – web interface • RLS inversions already ‘cheap’, ought to be doable on laptop by 2006! • Allow user to • select regularization • trim mode set • Cumulative flow plots, movies • Implement something similar for GONG DSDS

  6. Time Required • Incorporating local-helioseismology results: 6mths • Investigate adaptive regularization: 2 months • Develop scripts and data formats to automate inversions for MDI : 1 month • ---------------------LAUNCH---------------------- • Adapt to HMI data: 1 month • Cross-validate HMI results: 2 months • Solve the mystery of the solar cycle: priceless!

More Related