I: C7: Connections to Geospace

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I C7 Connections to Geospace

• Chairs Stephen Fuselier, Zoran Mikic
• Status Draft, Version 1, 05/25/2006

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Guidelines to group leads

• Assess the task definitions in appendix A (AIA
  Science Plan) in the 2004 Concept Study Report
  (CSR). In particular
• Science/task descriptions in Ch. A1.1
• Summaries in Table A2
• Identify required changes from, and additions to,
  the AIA Science Plan
• Evaluate the status of that plan, and formulate
  changes, if needed.
• You may add as many pages to this document as you
  need, but
• Add pages under the same headings please, do not
  change the roman numerals in the page titles,
  please add a, b, c, d,
• Resources
• AIA home http//aia.lmsal.com/
• AIA CSR summary http//aia.lmsal.com/public/CSR.h
  tm
• CSR https//aia.lmsal.com/doc?cmdvcurproj_numA
  IA00435
• Proposal https//aia.lmsal.com/doc?cmdvcurproj_
  numAIA00341

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Schedule

• 17 November 2005 draft sheets I, II to teams,
  requesting input for sheets III and IV
• 24 November 2005 completed sheets I-IV for
  review to teams, requesting input for sheets V-VI
• 8 December 2005 team input received for sheets
  V-VI
• 19 December 2005 draft of sheets VII-VIII to
  teams
• 9 January 2006 team comments received for sheets
  VII-VIII
• 6 February 2006 draft Science plans on meeting
  website, with sheets IX-X filled out by team
  leads (or teams after telecons)
• 13-17 February 2006 discussions during science
  team meeting discuss and complete pages IX-X.
• 17 February completed Science plans on line.

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II Science questions and tasks

• Primary scientific questions (AIA Objective 4)
• Dynamic coupling of corona and heliosphere
• Solar wind energetics
• Propagation of CMEs and related phenomena
• Vector field and velocity
• SDO/AIA science tasks
• Task 1A Develop a global background solar wind
  model
• Task 1B Develop a coronal heating and wave
  momentum flux parameterization for a global
  coronal solar wind model
• Task 1C Understand how to initiate CMEs using
  SDO data inputs
• Task 1D Propagate CMEs to 1AU

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III Science context

• Advances prior to and during SDO
• Development and deployment of a background solar
  wind model solicited in the 2005 LWS TRT
  Strategic Capabilities competition
• SDOs primary contribution
• Improvements in characterizing and forecasting
  the structure of the background solar wind as a
  result of SDOs vector magnetic field
  measurements, improved resolution, and AIAs
  better spectral coverage of EUV emission

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IV Science investigation

• Having a global background solar wind model is
  essential
• To understand the connection between coronal
  source regions and in situ observations
• To understand how CMEs propagate
• Theoretical support
• To develop a formulation on how to use AIA
  emission measurements to constrain empirical
  models of coronal heating and momentum wave flux
• To develop a CME initiation model that can use
  inputs from HMI and AIA (especially from far-side
  imaging?)
• To develop a CME propagation model

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V Implementation General 1

• What do we need to make progress on the science
  questions in general?
• Suggested TRT Focused Topic How to incorporate
  sequences of vector magnetograms into
  time-dependent global coronal models
• Suggested TRT Focused Topic To develop coronal
  heating and wave acceleration components for a
  global solar wind model
• Need to develop software to query, analyze, and
  visualize model results and to compare with
  observations (e.g., magnetic field line tracing,
  connection between S/C and Sun, rendering fields,
  )

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V Implementation General 2

• The Wang-Sheeley-Arge (WSA) model is very useful
  for operational solar wind forecasting
• Further development of the WSA model would
  improve its effectiveness and usefulness

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VI Implementation AIAHMI

• What do we need from and for SDO to make
  progress on our major science?
• Need to calibrate magnetic fields from HMI in
  Gauss (especially saturation effects, weak
  fields, polar fields)
• Having a photospheric magnetic field forecast
  model (e.g., Schrijver and DeRosa) would be very
  useful
• Need robust and accurate ambiguity resolution for
  vector magnetic fields

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VII AIAHMI data products

• list data products differentiate critical,
  desirable, useful
• SDO data
• Line-of-sight magnetic field (critical)
• Vector magnetic field (highly desirable)
• AIA emission in EUV (highly desirable)
• Supporting data from other observatories
• In situ solar wind data for model verification
  (highly desirable)
• Coronagraph data for CME initiation and
  propagation (highly desirable)

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VIII AIAHMI data production

• Assessment of required resources/codes/etc
• pipeline software
• analysis software/studies
• supporting software/models
• computational requirements (run time estimates,
  system requirements, )
• storage requirements size, duration,
• access web, archive, logs, search methods,

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IX Business plan Resources

• Need a continuously running background solar wind
  model this is partially addressed by the 2005
  LWS TRT Strategic Capabilities competition
• Need a dedicated operator to screen data, feed in
  data, deal with data gaps, resolve anomalies,
  check running of model, check output, assess
  performance, compare with data (postcasting)

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IX Business plan Resources (continued)

• Need a dedicated massively parallel computer
  system (256 CPUs) to run the background solar
  wind model
• Need storage for archived model results

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X Business plan Implementation

• Define key milestones, test procedures, and
  target dates,
• Communication define or list meetings, topical
  sessions, etc., where progress can be presented,
  discussed, evaluated,

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Additional Considerations

• One CME can pre-condition the corona for the
  propagation of a following CME
• This is very important in assessing the
  geo-effectiveness of CMEs
• Commercial customers (e.g., airlines) need to
  know when a geo-magnetic event is expected to
  start, and also when it is going to end
• Models can provide Situational Awareness
  knowing what is out there in the solar wind, and
  how it will affect us