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Note: The papers published below will continue to be available from this page until they are assigned to an issue. To see an article, click its [PDF] link. To review many abstracts, check the boxes to the left of the titles you want, and click the 'Selected articles' button. To see one abstract at a time, click its [Abstract] link.

Framework of Extreme Flood Risk Management in the Typhoon Country Region

Cho-Rong Kim
Full Text: PDF (3816KB) (81)
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Recently, the occurrence of extreme flood events beyond the limits of infrastructures has caused considerable flood damage, destroying the flood-protection hydraulic structures. Flood damages have increased worldwide due to climate change and weather phenomena such as the global warming, El Niño and La Niña. According to the Report of the Intergovernmental Panel on Climate Change (IPCC), extreme weather events such as heat wave, drought, and flood are expected to increase worldwide in the future. It is thus necessary to realize that larger and more frequent flood disasters are rapidly nearing us, and need to prepare for them accordingly.
This research provides a framework for extreme flood management, beginning with the establishment of extreme flood definition from a more general point of view through reviewing and analyzing various literature and references. The purpose of this research is to provide recommendations on extreme flood forecasting and identify status of typhoon committee member country. In addition, it is determined how the member countries of the ESCAP/WMO Typhoon Committee have responded to extreme flood.
The information and data of this research is based on the project entitled “Extreme Flood Forecasting System
(EFFS)” conducted by the Han River Flood Control Office of the Ministry of Land, Infrastructure and Transport
(MOLIT), Republic of Korea and Korea Institute of Civil Engineering and Building Technology (KICT).

Warnings on Tropical Cyclone for WMO Global Multi-Hazard Alert System

Yu-fai TONG, Yuen-chung Armstrong CHENG
Full Text: PDF (3222KB) (274)
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The World Meteorological Organization (WMO) is planning to implement a Global Multi-hazard Alert System (GMAS) to aggregate official warning1 information issued by authorities around the world and to serve as a one-stop shop to support the humanitarian organizations of the United Nations (UN), National Meteorological and Hydrological Services (NMHSs) and other global users including the media. It aims to enhance the authority and visibility of NMHSs and other alerting authorities. To aid effective dissemination of warnings to GMAS, the Common Alerting Protocol (CAP) was considered as a standard and robust format to use. In respect of GMAS infrastructure, the World Weather Information (WWIS) and the Severe Weather Information Centre (SWIC) of WMO as well as the WMO Alert Hub now being implemented are identified as core components, among others. The SWIC is being upgraded with GIS capability for displaying authoritative warnings and tropical cyclone (TC) information, and for use as a display platform of GMAS. Apart from warnings from NMHSs, authoritative TC warnings and advisories issued by Regional Specialized Meteorological Centres (RSMCs) and Tropical Cyclone Warning Centres (TCWCs) are also indispensable information for GMAS. As the existing TC warnings and advisories, now more or less in free text format, are mainly targeted for human users and are not intended for automatic parsing by computer software, it is proposed to make available the TC advisories in a machine-readable format so that TC information can be effectively ingested into GMAS and made available to the UN humanitarian organizations, NMHSs and other global users. In this respect, some enhancement measures to TC advisories are proposed. This calls for active collaboration of Members of the Typhoon Committee in the GMAS project.

Establishment of Assessment System for Structural Flood Control Measures

Cho-Rong Kim
Full Text: PDF (1636KB) (40)
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Due to extreme weather environment such as global warming and greenhouse effect, the risks of having flood damage has been increased with larger scale of flood damages. Therefore, it became necessary to consider modifying climate change, flood damage and its scale to the previous dimension measurement evaluation system. In this regard, it is needed to establish a comprehensive and integrated system to evaluate the most optimized measures for flood control through eliminating uncertainties of socio-economic impacts. Assessment System of Structural Flood Control Measures (ASFCM) was developed for determining investment priorities of the flood control measures and establishing the social infrastructure projects. ASFCM consists of three modules: 1) the initial setup and inputs module, 2) the flood and damage estimation module, and 3) the socio-economic analysis module.
First, we have to construct the D/B for flood damage estimation, which is the initial and input data about the estimation unit, property, historical flood damages, and applied area’s topographic & hydrological data. After that, it is important to classify local characteristic for constructing flood damage data. Five local characteristics (big city, medium size city, small city, farming area, and mountain area) are classified by criterion of application (population density). Next step is the floodplain simulation with HEC-RAS which is selected to simulate inundation. Through inputting the D/B and damage estimation, it is able to estimate the total damage (only direct damage) that is the amount of cost to recover the socio-economic activities back to the safe level before flood did occur. The last module suggests the economic analysis index (B/C ratio) with Multidimensional Flood Damage. Consequently, ASFCM suggests the reference index in constructing flood control measures to reduce water-related damage and decision-makers can choose the proper flood control measures in the socio-economic aspects.

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