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CIMMSE TC Wind Group Conference Call

CIMMSE TC Wind Group Conference Call. Wednesday, May 8 th , 2013 11:30 AM. Agenda. Climatology Paper Update Error Function Update. Climatology Paper Update. Draft of paper has been completed (WAF) Overview Decay once over land NDFD verification using CRONOS/H*Wind Analyses

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CIMMSE TC Wind Group Conference Call

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  1. CIMMSE TC Wind GroupConference Call Wednesday, May 8th, 2013 11:30 AM

  2. Agenda • Climatology Paper Update • Error Function Update

  3. Climatology Paper Update • Draft of paper has been completed (WAF) • Overview • Decay once over land • NDFD verification using CRONOS/H*Wind Analyses • Gust factors as function of location, sustained wind speed, and wind direction • Will forward copy of draft soon for review • Comments encouraged

  4. Error Function Update • Can create improved Holland Interpolated Wind Field: Holland_Improved(q, d) = Holland_Interp(q, d) - Normalized Holland Interp Error Function (q, d) * Max Wind • Likewise, can create improved Modified Rankine Wind Field: Rankine_Improved(q, d) = Rankine_Interp(q, d) - Normalized Rankine Interp Error Function (q, d) * Max Wind

  5. Summary • In general, Modified Rankine with error function appears superior to other interpolations • Improvements most dramatic near core of storm • Do not need to code much within TCMWindTool (just add function to interpolated wind fields) • Will make images and radial plots available online for viewing • Comments welcome • Focuses this month: • Climatology paper edits, taking into account comments from the wind team • TC Boundary Layer Literature Review • Set up focus for modeling studies

  6. TCWindReduction Smart Tool Reid Hawkins, SOO Wilmington, NC

  7. CSTAR Tropic Wind – Element Group

  8. Smart Tool WindReductionFactor Grid • WindGustFactor & WindReductionFactorgrids ISC sharable. • Names and number of edit areas areconfigurable. • 1st guess reduction percentages areconfigurable. • Edit areas should be set up prior to event, • but could be changed on fly by focal point.

  9. Smart Tool

  10. Examples Example of Tropical Cyclone Winds afterTCMWind complete. Example of winds after wind reduction factorshas been applied.

  11. DiscussionNext Conference Call: Wednesday, June 5th, 2013 11 AM

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