1. Professor and Research Director, Alan G. Davenport Wind Engineering Group, Boundary Layer Wind Tunnel Laboratory, Univ. of Western Ontario, London, ON, Canada N6A 5B9.
2. Associate Professor and Canada Research Chair in Environmental Fluid Mechanics, Alan G. Davenport Wind Engineering Group, Boundary Layer Wind Tunnel Laboratory, Univ. of Western Ontario, London, ON, Canada N6A 5B9 (corresponding author).
3. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of Western Ontario, London, ON, Canada N6A 5B9.