Lateral Length Scales Measured in Land Falling Tropical Cyclones

Abstract eng:
This paper presents the methodology and preliminary results of a full-scale data collection experiment to estimate the lateral length scales of turbulence from a land falling hurricane. Multiple portable anemometer towers were placed in close proximity in open terrain and simultaneously sampled wind velocity through a central data acquisition system. The correlation between pairs of instruments was plotted as a function of projected lateral spatial separation relative to mean wind direction. This projected separation varies throughout the storm with wind direction, producing the spatial cross-covariance function needed for integration. Preliminary results are presented for data collected in North Carolina during hurricane Isabel (2003).

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