Attendees: Bryce Tyner (NCSU), Reid Hawkins (ILM), David Glenn (MRX), Gail Hartfield (RAH), and Jonathan Blaes (RAH)
-The Holland et al. (2010) wind speed interpolation method as well as the Modified Rankine Vortex method currently being implmented in the TCMWindTool have been coded by Bryce. The Holland et al. (2010) interpolation method uses data from the TCM product in its creation, including the 34 knot maximum wind radius as well as the storm central pressure. As mentioned in Holland et al. (2010), the interpolation method reduces the sensitivity to the radius of maximum winds as well as the various maximum wind radii, which are not very good products issued by NHC. The preliminary analysis suggests a more realisitic wind field. Work is currently being conducted to show the reduced sensitivity in the Holland et al. (2010) model for recent TCs affecting the study region. Comparison to H*Wind surface wind speed analysis will also be conducted. If there are noticable improvements using this new interpolation method, we will suggest a change in the TCMWindTool to the tool developers.
-An analyis of decay of wind speeds was conducted for several recent landfalling TCs. Using RUC analyses, hourly temporal plots were created. These plots show nonlinear decay within the six hour best track data times. Particularly for strong storms making landfall in the region, most decay occurswithin a couple of hours and then levels off. Because of this, a linear fit is not appropriate for use in the TCMWindTool. Alternative interpolation methods are being examined that still only incorporate products issued by NHC.
-NDFD verification has been completed. All plots have been posted to http://www4.ncsu.edu/~bptyner. Collaborators are encouraged to examine the plots and provide comments/interesting observations to Bryce over the next several weeks. The various comments will be compiled and used in the final CSTAR report.
The next conference call will be held on Wednesday, August 8th at 11 AM.