A Numerical Study on Factors Affecting Unusual Motion of TC 9414 (DOUG)

Based on the numerical simulation of TC 9414, which moved in an anomalous track, by using a 10-level primitive equation model, the main causes for the TC unusual motion are studied. The role of each factor played in TC motion is studied based upon the numerical model as well. The results show that the evolution of environmental flow is the most important cause that leads to the abrupt change of TC moving track, and the structure of TC itself has small effect on its motion