A Diagnostic Study of the Intensity of Three Tropical Cyclones in the Australian Region. Part I: A Synopsis of Observed Features of Tropical Cyclone Kathy (1984)
France Lajoie, Kevin Walsh
MONTHLY WEATHER REVIEW | AMER METEOROLOGICAL SOC | Published : 2010
Objective streamline analyses and digitized high-resolution IR satellite cloud data have been used to examine in detail the changes in the environmental circulation and in the cloud structure that took place in and around Tropical Cyclone Kathy (1984) when it started to intensify, and during its intensification and dissipation stages. The change of low-level circulation around Tropical Cyclone Kathy was measured by the change in the angle of inflow ( α4) at a radius of 4° latitude from the cyclone center. When Kathy started to intensify, α4 increased suddenly from 20° to 42.5° in the northerly airstream to the north and northeast of the depression, and decreased to 0° to the south of the dep..View full abstract
We thank Noel Davidson for supplying objective analysis data and the University of Melbourne for supporting this research. We also thank three anonymous reviewers for their detailed comments.