Contribution of Vertical Advection to Supergradient Wind in Tropical Cyclone Boundary Layer: A Numerical Study

Abstract The existence of supergradient wind in the interior boundary layer is a distinct feature tropical cyclone (TC). Although vertical advection shown to enhance TC (TCBL), how and what extent strength structure are modulated by not well understood. In this study, both TCBL model an axisymmetric full-physics used quantify contribution process TCBL. Results from show that removal radial reduces height slightly more than 50%. agradient core ~30% but increases ~10%. or produces substantial reduction (52%) (35%). However, intensification rate final intensity simulated TCs terms maximum 10-m speed little differences experiments with without wind, suggesting contributes either steady-state TC.