Graphical Abstract

Wang, C.-C., K.-Y. Lin, C. A. Davis, S.-Y. Huang, S. C.-S. Liu, K. Tsuboki, and B. J.-D. Jou, 2020: A modeling study on the impacts of Typhoon Morakot (2009)’s vortex structure on rainfall in Taiwan through the use of piecewise potential vorticity inversion. J. Meteor. Soc. Japan, 98, https://doi.org/10.2151/jmsj.2020-036.
Early Online ReleaseGraphical Abstract with highlights

Plain Language Summary: In this study, the impacts of Typhoon Morakot (2009)’s vortex structure on the extreme rainfall in Taiwan are investigated through modeling with an application of piecewise potential vorticity (PV) inversion. The control experiment (C0), starting at 0000 UTC 7 August or 15 h before landfall, reproduces the event realistically and is validated against the observations. By altering the PV perturbation inside 750 km from its center, we conduct sensitivity experiments in which the size and/or circulation strength of Morakot is reduced/weakened in the initial field in several different ways.

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