Identification

Title

Rapid Intensification of Typhoon Chanthu (2021) induced by topographic effects of Taiwan

Abstract

Typhoon Chanthu (2021) underwent a unique rapid intensification (RI) when it moved northward offshore east of Taiwan under a northerly vertical wind shear. The recirculating flow of Chanthu’s outer circulation around south Taiwan led to the observed stronger convection at the offshore side of the typhoon. A multi-resolution simulation of MPAS has successfully captured the RI of Chanthu and indicated no RI in the absence of Taiwan terrain. Sensitivity tests help to explore the role of terrain-induced recirculating flow in the induced RI. Based on the solution of the extended Sawyer–Eliassen (SE) equation, diabatic heating contributes the most to the lower-tropospheric eyewall spinup in the nonlinear simulation. Asymmetric convection is enhanced in downshear left quadrant by the strong convergence between the recirculating flow and the typhoon’s inner vortex, resulting in a stronger contribution to the spinup than in the other three quadrants. Such asymmetric convection configured at the offshore side of the inner typhoon provides the dynamic mechanism of Chanthu’s RI.

Resource type

document

Resource locator

Unique resource identifier

code

https://n2t.net/ark:/85065/d7t43zd2

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

Text

originating controlled vocabulary

title

Resource Type

reference date

date type

publication

effective date

2016-01-01T00:00:00Z

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

2024-12-01T00:00:00Z

Frequency of update

Quality and validity

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Conformity

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Constraints related to access and use

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Use constraints

<span style="font-family:Arial;font-size:10pt;font-style:normal;" data-sheets-root="1">Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. </span>

Limitations on public access

None

Responsible organisations

Responsible party

contact position

OpenSky Support

organisation name

UCAR/NCAR - Library

full postal address

PO Box 3000

Boulder

80307-3000

email address

opensky@ucar.edu

web address

http://opensky.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact