Trends in extreme rainfall and their relationship to flooding episodes in Vhembe district, South Africa DOI Creative Commons
Lily Munzhedzi, Ephias Mugari, Nthaduleni Samuel Nethengwe

et al.

Environmental Research Communications, Journal Year: 2024, Volume and Issue: 6(9), P. 095016 - 095016

Published: Sept. 1, 2024

Abstract Extreme weather events, such as heavy rainfall, are being increased by climate change in various regions, and events often cause floods. This study examined the trends variability of extreme rainfall indices using daily data (1981–2023) from three sites at different socio-economic development spectra Vhembe District, Limpopo Province, South Africa. The analyses focus on annual total wet days (PRCPTOT), maximum number consecutive dry (CDD) (CWD), 1-day 5-day (RX1 day RX5 day), Simple Daily Intensity Index (SDII), exceeding varying amounts precipitation (R10, R20, R40) with greater than 95th 99th percentile (R95p R99p) 1981–2023 rainfall. We discuss observed light actual flood occurrences to establish linkages. Several statistically significant marginal changes were identified provided key insights into reported flooding district—flooding episodes mainly attributed increases (PRCPTOT) (R99p). Other contributors declining CDD increasing RX1day Duthuni, R40 Musina well R1 Sane. However, low altitude, urbanization, poor waste management inadequate drainage systems among non-climatic drivers risk across sites, but these warrant further investigation. complex interplay between climatic underscores importance localized studies need for adaptive strategies minimize loss damage. Overall, this research provides valuable trends, which essential developing site-specific mitigation adaptation strategies. initiatives require placing vulnerable communities centre order develop solutions that locally led relevant.

Language: Английский

A global outlook on multi-hazard risk analysis: A systematic and scientometric review DOI
Titilayo Abimbola Owolabi, Muhammad Sajjad

International Journal of Disaster Risk Reduction, Journal Year: 2023, Volume and Issue: 92, P. 103727 - 103727

Published: May 5, 2023

Language: Английский

Citations

33

A review of nature‐based infrastructures and their effectiveness for urban flood risk mitigation DOI Creative Commons
Md. Esraz‐Ul‐Zannat, Ayşın Dedekorkut-Howes, E. Morgan

et al.

Wiley Interdisciplinary Reviews Climate Change, Journal Year: 2024, Volume and Issue: 15(5)

Published: May 7, 2024

Abstract Anthropogenic climate change and rapid urbanization are contributing to more frequent intense urban flooding. There is widespread agreement that traditional gray infrastructure, a single‐purpose solution, fails address the problem properly contributes adverse direct indirect environmental impacts. As such, Nature‐based Solutions (NbS) can provide improved outcomes flood risk management along with co‐benefits society economy, as they have numerous benefits incuding often smaller carbon footprint or even sometimes sequestering carbon. However, there ambiguity misconception about NbS uptake of for management, which still inadequate compared infrastructure. This research seeks explore various nature‐based infrastructures including their present status application build resilience flooding through systematic literature review. The robustness some questionable varies across different spatial scales from plot watershed. work stand‐alone in many cases well supplement infrastructure achieve wider benefits. review provides comparison solutions identifies mitigation include elements, an overview effectiveness scales. findings should contribute better understanding appropriate diverse options NbS, gray, hybrid designs by policymakers decision‐makers enable them effectively designing implementing measures. article categorized under: Climate Development > Urbanization, Development, Change Vulnerability Adaptation Learning Cases Analogies

Language: Английский

Citations

13

Continuing from the Sendai Framework midterm: Opportunities for urban digital twins in disaster risk management DOI
Edgardo Macatulad, Filip Biljecki

International Journal of Disaster Risk Reduction, Journal Year: 2024, Volume and Issue: 102, P. 104310 - 104310

Published: Feb. 1, 2024

Language: Английский

Citations

9

Proposed Framework for the Flood Disaster Management Cycle in Malaysia DOI Open Access

Syed Ahmad Hakim Bin Syed Muzamil,

Noor Yasmin Zainun,

Nadiatul Nazleen Ajman

et al.

Sustainability, Journal Year: 2022, Volume and Issue: 14(7), P. 4088 - 4088

Published: March 30, 2022

Floods have been reported to be an important disaster in any country and Malaysia has faced similar disasters the past, resulting disturbance daily community routine issues, financial losses, infrastructure damage including railway tracks, bridges, roads, vehicles, properties, worst is loss of lives. The Sarawak region also witnesses yearly rainy seasons. purpose this paper explore possible challenges manage flood identify solutions floods. In research, secondary data was used for qualitative assessment. newspaper articles were collected from year 2015 until 2019. Targeted interviews conducted with experts working management schemes rank validate most factors after content analysis past news reports. It concluded that poor drainage systems, rapid development, heavy rainfall, lack public awareness, coordination executing cycle among agencies are key challenges. Thus, it recommended systems should upgraded case study area. Proper planned forecasting strengthened. An effective early warning system designed activate plans a proper awareness campaign initiated educate train local deal such disasters. suggested assure maintain collaboration different during last phase, proposes framework future management. will assist stakeholders make informed decisions save human lives substantial losses. can terrain countries.

Language: Английский

Citations

35

Urban climate resilience in Africa: a review of nature-based solution in African cities' adaptation plans DOI Creative Commons

Razak Kiribou,

Sintayehu Djene,

Bobe Bedadi

et al.

Discover Sustainability, Journal Year: 2024, Volume and Issue: 5(1)

Published: May 16, 2024

Abstract Cities are globally exposed to climate change effects, which revealed that 55% of the world's population is at risk. Despite their low contribution global greenhouse gas emissions, African cities paying highest cost threats caused by due rapid urban community growth, high density, and inadequate planning. This review has explored demonstrated benefit Nature-based Solutions (NbS) implementation for crisis resilience have been implemented sharing information on sustainable city planning in Africa. The analysis based countries’ Nationally Determined Contribution (NDC) reports, institution’s review, scientific articles. successful NbS since 2015 developed countries confirms a multi-functional environmental pre-urban populations. It reduces cities' vulnerability advances numerous Sustainable Development Goals (SDGs) achievement. only 15 (27,7%) with 119 projects adapt tackle water, agriculture, forest woodland, coastal marine habitat, grassland, mountain habitat sectors. Rural areas paid more attention than despite urbanization face extreme effects. Furthermore, process observed some challenges translating approaches into measurable actions resilience: (i) issues governance policies; (ii) insufficient mobilization resources lack private sector involvement financing NbS; (iii) comprehensive evidence-based strategies knowledge operationalization cities.

Language: Английский

Citations

8

Analysis of Flooding Vulnerability in Informal Settlements Literature: Mapping and Research Agenda DOI Creative Commons
Emem Anwana, Oluwatobi Mary Owojori

Social Sciences, Journal Year: 2023, Volume and Issue: 12(1), P. 40 - 40

Published: Jan. 11, 2023

The United Nations (UN) emphasizes the necessity of reducing social and material losses imposed by water disasters, with an emphasis on protecting most vulnerable groups to achieve sustainable development goals (SDGs). Several objectives outlined under SDGs including Goals 1, 11, 13 concentrate minimizing vulnerability disasters boosting resilience extreme occurrences. Flooding is increasingly challenging problem facing cities today, consequences mostly felt in marginalized communities. Residents informal settlements are particularly susceptible effects flooding given that they compelled live unsafe locations, such as floodplains. This study reviews current status research from empirical perspectives globally South Africa through systematic literature bibliometric analysis 249 peer-reviewed articles flooding, a focus settlements. We detect keywords major themes. Our shows studies flood modeling inadequate. synthesized present body knowledge floods Future prospects identified areas upgrading housing infrastructures, policies, integrating indigenous knowledge, local participation.

Language: Английский

Citations

16

Mapping and evaluating the impact of flood hazards on tourism in South African national parks DOI Creative Commons
Kaitano Dube, Godwell Nhamo, David Chikodzi

et al.

Journal of Outdoor Recreation and Tourism, Journal Year: 2023, Volume and Issue: 43, P. 100661 - 100661

Published: July 27, 2023

There is consensus that the risk of flooding increasing in many parts Africa and globally due to climate variability change-induced extreme weather events. Floods are often considered a necessity by conservation community semi-arid regions since they recharge important aquifers wetlands, which critical areas for biodiversity conservation. However, floods threaten tourism infrastructure, given their destructive nature. This study maps evaluates hotspots 19 South African national parks assesses flood occurrence impact on tourism. A mixed methods approach was adopted, utilising primary data collected from interviews, surveys, field observations secondary sources. The found most located Kruger National Park, with more than nine Mapungubwe almost all events linked Flooding incidents these parks, devastatingly impacting infrastructures, such as camps, roads, bridges heritage picnic sites. Other concerned about include Wilderness section Garden Route, Bontebok Park isolated some Kgalagadi, Augrabies Mokala Parks. affected within pathway tropical cyclones. recommends engineering, nature-based solutions development early warning systems manage risks parks. In view increased frequency intensity there need build robust system reduce impacts damage back better greener after ensure resilience. Ensure adequate insurance cater r potential revenue losses where business incurred. hazard zoning avoid infrastructure establishments.

Language: Английский

Citations

15

Assessing social vulnerability to flood hazards: A case study of Sarawak's divisions DOI Creative Commons
Ismallianto Isia, Tony Hadibarata, Ratih Indri Hapsari

et al.

International Journal of Disaster Risk Reduction, Journal Year: 2023, Volume and Issue: 97, P. 104052 - 104052

Published: Oct. 1, 2023

Social vulnerability assessment to flood hazard depends upon multiple factors that can vary across the different indicators. However, there is limited knowledge on specific indicators suitable for assessing social Sarawak. This study systematically analyzed important components of and mapped them by weight 12 divisions. Indices focusing two dimensions (physical exposure resistances) were identified based literature. Data these indices then collected through relevant government agencies. Components assessed significantly contributing Principal Component Analysis (PCA). An entropy method was used Vulnerability estimated Iyengar Sudarshan methodology data produce a map proposed Index (SVI). The results indicated divisions Kuching, Miri, Sibu Bintulu more vulnerable (score over than 0.81) those in other Greater mainly due high extreme events less adaptive capacity resistance, which affect agricultural production negatively, combination with population density communities. clearly shows areas are susceptible, indicating government's adaptation measures should depending available resources, urgency, means survival needed achieve resilience against climate change.

Language: Английский

Citations

14

Evolution of Flood Prediction and Forecasting Models for Flood Early Warning Systems: A Scoping Review DOI Open Access
Nicholas Byaruhanga, Daniel Kibirige, Shaeden Gokool

et al.

Water, Journal Year: 2024, Volume and Issue: 16(13), P. 1763 - 1763

Published: June 21, 2024

Floods are recognised as one of the most destructive and costliest natural disasters in world, which impact lives livelihoods millions people. To tackle risks associated with flood disasters, there is a need to think beyond structural interventions for protection move more non-structural ones, such early warning systems (FEWSs). Firstly, this study aimed uncover how forecasting models FEWSs have evolved over past three decades, 1993 2023, identify challenges unearth opportunities assist model selection prediction. Secondly, and, return, point data other modelling components required develop an operational system focus on data-scarce regions. The scoping literature review (SLR) was carried out through standardised procedure known Preferred Reporting Items Systematic Reviews Meta-Analyses (PRISMA). SLR conducted using electronic databases Scopus Web Science (WoS) from until 2023. results found that between 2010, time series (TSMs) were dominant prediction machine learning (ML) models, mostly artificial neural networks (ANNs), been 2011 present. Additionally, coupling hydrological, hydraulic, (ANN) used ensemble flooding due superior accuracy ability bring uncertainties system. challenge ungauged poorly gauged rainfall stations developing countries. This leads situations where ML algorithms like ANNs predict floods. On hand, use Satellite Precipitation Products (SPP) replace missing or stations. Finally, recommended interdisciplinary, institutional, multisectoral collaborations be embraced bridge gap so knowledge shared faster-paced advancement systems.

Language: Английский

Citations

6

Multi-Hazard Meteorological Disaster Risk Assessment for Agriculture Based on Historical Disaster Data in Jilin Province, China DOI Open Access
Jiawang Zhang,

Jianguo Wang,

Shengbo Chen

et al.

Sustainability, Journal Year: 2022, Volume and Issue: 14(12), P. 7482 - 7482

Published: June 19, 2022

The impact of global climate change is gradually intensifying, and the frequent occurrence meteorological disasters poses a serious challenge to crop production. Analyzing evaluating agricultural multi-hazard disaster risks based on historical data summary occurrences development patterns are important bases for effective reduction natural regulation This paper explores technical system risk assessment establishes model at regional level from 1978–2020 in first national comprehensive census, carrying out assessments 18 major grain-producing regions Jilin province. empirical evidence shows: (1) drought flood key prevention Hotspots widely distributed study area, while hail typhoons mainly concentrated eastern region with certain regionality. (2) values four all decreased increase index. Under same index, various main areas as follows: > typhoon hail. different indices, Jiutai, Nongan, Yitong, Tongyu, other places presented high medium–high levels. (3) From spatial evolution trend, along rising hazards spatially oriented southeastern direction, central part area decreases increasing damage In addition, recommendations made three aspects: institutional construction, management model, capacity.

Language: Английский

Citations

22