A Unified Numerical Model for Typhoon Surge in the Northwestern Pacific SCIE SCOPUS

Cited 1 time in WEB OF SCIENCE Cited 1 time in Scopus
Title
A Unified Numerical Model for Typhoon Surge in the Northwestern Pacific
Author(s)
Kang, Sok Kuh; Seung, Young Ho; Kim, Kyeong Ok; Kim, Eun Jin; Jung, Kyung Tae
KIOST Author(s)
Kim, Kyeong Ok(김경옥)Kim, Eun Jin(김은진)
Publication Year
2017
Abstract
A new finite difference modeling system with modified fetched variable grid technique has been developed in order to predict the typhoon induced surge over the Northwestern Pacific. The grid resolution ranges from 18.5 km (10 ') in open ocean to 109 m (1/17 ') near the coastal areas of interest, which is quite suitable for resolving the complicated coastal boundaries of the Korean coasts. The total grid number is about 1,350,000 points and the model computation can be effectively carried out with efficient time interval satisfying 1-30 Courant numbers. This system has various advantages over regular finite difference grid system, allowing one to avoid possible numerical errors arising when adopting nested grid technique. Experiments for typical typhoons such as Maemi in 2003 and Nari in 2007 have been carried out to demonstrate that the system works reasonably well. The model results are compared well with observations. It is found that negative surges are generated by typhoons over the shelf, horizontally grow while moving with typhoons, and propagate along the coastline as Kelvin waves on arriving at the coast. The alternating positive and negative surges, occurring in the southern Korean coasts including Pusan area and also along the Japanese coasts of the Korea Strait, seem to be due to the geometric effect by the East/Japan Sea.
ISSN
0749-0208
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1346
DOI
10.2112/SI79-029.1
Bibliographic Citation
JOURNAL OF COASTAL RESEARCH, pp.139 - 143, 2017
Publisher
COASTAL EDUCATION & RESEARCH FOUNDATION
Subject
TIDE
Keywords
Unified model for surge; fetched variable grid; Northwestern Pacific
Type
Article
Language
English
Document Type
Article; Proceedings Paper
Publisher
COASTAL EDUCATION & RESEARCH FOUNDATION
Related Researcher
Research Interests

Rapidly Intensified Typhoon research,Air-sea interaction,in-situ data analysis,급강화 태풍 연구,해양-대기 상호작용,현장관측자료분석

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