Graphical Abstract

Jin, H., J. R. Moskaitis, Y.Jin and J. D. Doyle, 2022: Resolution impact on rapid intensification and structure change of super typhoon Hagibis (2019). J. Meteor. Soc. Japan, 100, 943-964.
Special Edition on Typhoons in 2018-2019
Early Online ReleaseGraphical Abstract


Plain Language Summary: Typhoon Hagibis (2019) had significant societal impacts in Japan and went through a period of explosive rapid intensification (RI), followed by a secondary eyewall formation (SEF) and an eyewall replacement cycle (ERC). Operational forecasts from Coupled Ocean/Atmosphere Mesoscale Prediction System – Tropical Cyclone (COAMPS-TC), with the finest grid spacing at 4-km, failed to capture Hagibis’ explosive RI, peak intensity, and the associated inner-core structural evolution. Four COAMPS-TC sensitivity experiments, initialized at 1200 UTC 5 Oct. 2019, were conducted to study the impact of horizontal resolution on prediction of Typhoon Hagibis’ RI and structure. Results indicate that rapid intensification of the storm to Category 4 intensity can be simulated with the finest grid spacing at 4-km, but use of 1.33-km for the finest grid spacing facilitates more realistic prediction of the explosive intensification rate, Category 5 peak intensity, and small inner core accompanying the RI.