Graphical Abstract

Kanada, S., and A. Wada, 2016: Sensitivity to horizontal resolution of the simulated intensifying rate and inner-core structure of typhoon Ida, an extremely intense typhoon. J. Meteor. Soc. Japan, 94A, 181-190.
https://doi.org/10.2151/jmsj.2015-037 Graphical Abstract with highlights

Original PDF

Highlights:

The model-resolution sensitivity of simulated intensifying and deepening rates of an extremely intense tropical cyclone, Typhoon Ida (1958), was investigated by using the Japan Meteorological Agency/Meteorological Research Institute nonhydrostatic atmospheric model with horizontal resolutions of 20 (NHM20), 10 (NHM10), 5 (NHM5), and 2 km (NHM2).
The results revealed great differences in the intensifying and deepening rates and their associated structural changes among simulations.
Only the cloud-resolving 2km model, with explicit microphysics, could reproduce the observed maximum intensity and extreme intensification rate of the typhoon realistically since the model could produce the deep, intense and upright updrafts inside the radius of maximum wind speed around the vorticity-rich area over the strong near-surface inflow.