Finding patterns of extreme climate events in the South China Sea : a study of cold surges in Taiwan

Cold surge is one of the most extreme climate events during the Winter Monsoon yet its impact on the South China Sea (SCS) has not been studied in extensive detail. Taiwan, located at the northern end of the SCS, has traditionally been severely affected by the occurrence of cold surge events during...

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Bibliographic Details
Main Author: Fu, Ziyue
Other Authors: Lo Yat-Man, Edmond
Format: Final Year Project (FYP)
Language:English
Published: 2017
Subjects:
Online Access:http://hdl.handle.net/10356/71461
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author Fu, Ziyue
author2 Lo Yat-Man, Edmond
author_facet Lo Yat-Man, Edmond
Fu, Ziyue
author_sort Fu, Ziyue
collection NTU
description Cold surge is one of the most extreme climate events during the Winter Monsoon yet its impact on the South China Sea (SCS) has not been studied in extensive detail. Taiwan, located at the northern end of the SCS, has traditionally been severely affected by the occurrence of cold surge events during winter but limited studies have taken a close look at this region. This Final Year Project (FYP) study analysed time series data from the past ten winters and found that the cold surge frequency exhibited aperiodic fluctuation. Weak correlations were found between temperature and pressure variations. Given the complex local topographic features in Taiwan, ranging from the Central Mountain Range (CMR) to the narrow Taiwan Strait, it was hypothesized that the surface conditions during a cold surge are different within the Taiwan region and the regions in its vicinity. Therefore, this study further used the European Centre for Medium-Range Weather Forecasts (ECMWF) Reanalysis data to construct composite time series charts and synoptic maps to analyse these differences caused by the interactions between the cold surge and local terrains. The composite time series confirmed the hypothesis as visible and consistent characteristics were observed in the four selected regions in Taiwan. The synoptic maps further demonstrated the reasons for these characteristics via the progression of two representative cold surge cases analysed.
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spelling ntu-10356/714612023-03-03T17:05:30Z Finding patterns of extreme climate events in the South China Sea : a study of cold surges in Taiwan Fu, Ziyue Lo Yat-Man, Edmond School of Civil and Environmental Engineering DRNTU::Engineering::Civil engineering Cold surge is one of the most extreme climate events during the Winter Monsoon yet its impact on the South China Sea (SCS) has not been studied in extensive detail. Taiwan, located at the northern end of the SCS, has traditionally been severely affected by the occurrence of cold surge events during winter but limited studies have taken a close look at this region. This Final Year Project (FYP) study analysed time series data from the past ten winters and found that the cold surge frequency exhibited aperiodic fluctuation. Weak correlations were found between temperature and pressure variations. Given the complex local topographic features in Taiwan, ranging from the Central Mountain Range (CMR) to the narrow Taiwan Strait, it was hypothesized that the surface conditions during a cold surge are different within the Taiwan region and the regions in its vicinity. Therefore, this study further used the European Centre for Medium-Range Weather Forecasts (ECMWF) Reanalysis data to construct composite time series charts and synoptic maps to analyse these differences caused by the interactions between the cold surge and local terrains. The composite time series confirmed the hypothesis as visible and consistent characteristics were observed in the four selected regions in Taiwan. The synoptic maps further demonstrated the reasons for these characteristics via the progression of two representative cold surge cases analysed. Bachelor of Engineering (Civil) 2017-05-17T01:18:10Z 2017-05-17T01:18:10Z 2017 Final Year Project (FYP) http://hdl.handle.net/10356/71461 en Nanyang Technological University 37 p. application/pdf
spellingShingle DRNTU::Engineering::Civil engineering
Fu, Ziyue
Finding patterns of extreme climate events in the South China Sea : a study of cold surges in Taiwan
title Finding patterns of extreme climate events in the South China Sea : a study of cold surges in Taiwan
title_full Finding patterns of extreme climate events in the South China Sea : a study of cold surges in Taiwan
title_fullStr Finding patterns of extreme climate events in the South China Sea : a study of cold surges in Taiwan
title_full_unstemmed Finding patterns of extreme climate events in the South China Sea : a study of cold surges in Taiwan
title_short Finding patterns of extreme climate events in the South China Sea : a study of cold surges in Taiwan
title_sort finding patterns of extreme climate events in the south china sea a study of cold surges in taiwan
topic DRNTU::Engineering::Civil engineering
url http://hdl.handle.net/10356/71461
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