The 23rd Conference on Hurricanes and Tropical Meteorology

15B.16
UPPER OCEAN RESPONSE TO MOVING TROPICAL CYCLONES IN THE PRESENCE OF LARGE SEA SURFACE TEMPERATURE GRADIENT AND COMPLEX TOPOGRAPHY

Lian Xie, North Carolina State University, Raleigh, NC; and C. Zhang, L. J. Pietrafesa, A. Xiu, and K. Wu

The responses of upper oceans to moving tropical cyclones in different settings of geostrophic current, coastal and bottom topography, storm size, intensity and moving speed are investigated
using a three-dimensional primitive equation ocean model. The relative significance of these factors in tropical cyclone-induced sea surface cooling is quantified. The results indicate that considerable differences exist between the response in shallow waters and that in deep waters. Significant difference also exists between the response in a quiescent ocean and that in oceans where a strong western boundary current exists. Factors that determine the asymmetry of upper ocean response with respect to the storm track will also be discussed

The 23rd Conference on Hurricanes and Tropical Meteorology