Modulation of Asymmetric Inner‐Core Convection on Midlevel Ventilation Leading up to the Rapid Intensification of Typhoon Lekima (2019)

Abstract

Tropical cyclone (TC) intensity change, especially rapid intensification [RI; an increase of at least 15 m s −1 in 10-m maximum wind in 24 hr (Kaplan & DeMaria, 2003)], remains a tough issue in operational forecast due to our limited understanding on its driving mechanisms. It is suggested that RI is more likely to occur under combination of favorable oceanic and atmospheric conditions, including high sea surface temperature (SST), high ocean heat content, low vertical wind shear (VWS), and strong upper-level divergence (e.g.,