A methodology of tracking transitioning Cyclones

Abstract

Cyclone transition is a process in which either a tropical cyclone or an extratropical cyclone undergoes a fundamental dynamic and thermodynamic transformation. A tropical transition is a process in which a cold-core extratropical cyclone transforms to a warm-core tropical cyclone, while extratropical transition refers to the opposite mechanism. The transition process is gradual, with no sharp defining threshold representing its commencement or completion. This study develops and explores a methodology of identifying tropical transition and extratropical transition events. Using the 1.5° ERA-Interim reanalysis dataset over the period from 1989 to present, cyclone tracks are derived using The..