SNARF Chair's Report Geoff Blewitt

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SNARF Chair's ReportGeoff Blewitt

• Recap of prior meetings
• SNARF status
• Funding status

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Recap of Prior Meetings

• 2004-01, UNAVCO Inc., Boulder, CO.
• - Initial meeting. Establish key areas of
  research.
• 2004-05, Joint Assembly, Montreal, Canada.
• - Special AGU session followed by workshop.
  Exploration state of the art.
• 2005-03, EarthScope National Meeting, Santa Ana,
  NM.
• - Workshop followed by plenary presentation.
• - Foundation for initial SNARF realization.
  Stochastic approach to GIA.
• 2005-06, UNAVCO/IRIS Meeting, Stevenson, WA.
• - Education of users. SNARF 0.0 presented.
• 2006-03, UNAVCO Science Meeting., Denver, CO.
• - SNARF 1.0 and PBO. Operational analysis for
  future SNARF realizations.
• 2006-11, Natural Resources Canada, Ottawa,
  Canada.
• - Explore current weaknesses in frames, and ways
  to improve SNARF
• 2007-03, EarthScope National Meeting, Monterey,
  CA.
• - User's experiences and needs, and planning
  future development.

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SNARF Status

• SNARF 1.0 operational in PBO analysis
• SNARF 1.n ... from additional data and possibly
  additional data analysis groups
• SNARF 2.0 awaits IGS reanalysis in ITRF2005 using
  new antenna models (station satellite)
• Progress on standard and accurate GIA models
  expected to be slow and so current stochastic
  approach will continue for now
• Moving toward increasing reliance on NGS and
  NRCan for maintenance of SNARF

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Funding Status

• Grant 1 40K Jan 2004- Jan 2006
• 1 yr no-fee extension, which expired Jan 2007.
• Grant 2 40K Jan 2006 Dec 2006
• Apparently a clerical error (should be 2 yr)
• Change in expiration date granted (to Dec 2007)
• Funding issues
• Funds underspent (Grant 1 carry-over, ...)
• More than sufficient funds for 2007
• Suggest special session workshop at Fall AGU
• Follow on grant unlikely, but no-cost extension
  through 2008 is possible