The CSTAR TC Winds team recently had a conference call reviewing the performance of our experimental tools and methodologies during the 2014 hurricane season. During the discussion of our experiences during Hurricane Arthur, one issue was noted with the performance of the TC Wind Gust methodology at the immediate coast where differing gust factors for the land and marine locations result in some unrepresentative data. The images below demonstrate the issue and a potential work around.
Note the higher gusts over land in above image on left compared to adjacent water areas in narrow strip of coastal southeast VA. Image at right uses a third gust factor of 1.38 in region of 2-3 grid points (land within 5 to 7.5 km of water). This removes the bias for the most part. Just experimenting here, exact values of gust factors may vary slightly. Let me know what you think, Thanks, Larry B.