Potential Impact of Climate Change on Rainfall Intensity-Duration-Frequency Curves in Roorkee, India

Singh, Ronit; Arya, D. S.; Taxak, A. K.; Vojinović, Zoran

doi:10.1007/s11269-016-1441-4

Cited by 42 publications

(20 citation statements)

References 20 publications

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“…This comes with the necessity to address various drivers and scenarios such as urbanisation and land use change (e.g., [34,35]), population growth and climate change in rainfall patterns [36]. The present work provides contribution in this direction as it attempts to compare the effects in reducing CATs in the 1D and 2D models in modelling supercritical and transcritical flow conditions.…”

Section: Discussionmentioning

confidence: 99%

Effects of Reducing Convective Acceleration Terms in Modelling Supercritical and Transcritical Flow Conditions

Abebe

Seyoum

Vojinović

et al. 2016

Water

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Abstract:Modelling floods and flood-related disasters has become priority for many researchers and practitioners. Currently, there are several options that can be used for modelling floods in urban areas and the present work attempts to investigate effectiveness of different model formulations in modelling supercritical and transcritical flow conditions. In our work, we use the following three methods for modelling one-dimensional (1D) flows: the MIKE 11 flow model, Kutija's method, and the Roe scheme. We use two methods for modelling two-dimensional (2D) flows: the MIKE21 flow model and a non-inertia 2D model. Apart from the MIKE11 and MIKE21 models, the code for all other models was developed and used for the purposes of the present work. The performance of the models was evaluated using hypothetical case studies with the intention of representing some configurations that can be found in urban floodplains. The present work does not go into the assessment of these models in modelling various topographical features that may be found on urban floodplains, but rather focuses on how they perform in simulating supercritical and transcritical flows. The overall findings are that the simplified models which ignore convective acceleration terms (CATs) in the momentum equations may be effectively used to model urban flood plains without a significant loss of accuracy.

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Section: Discussionmentioning

confidence: 99%

Effects of Reducing Convective Acceleration Terms in Modelling Supercritical and Transcritical Flow Conditions

Abebe

Seyoum

Vojinović

et al. 2016

Water

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“…Often floods at any time and location can also arise from these different category combinations. When residential, commercial, and industrial developments were settled in such flood-prone areas, they are obviously vulnerable to flood disasters (Mynett & Vojinović, 2009;Singh et al, 2016).…”

Section: Urban Floodingmentioning

confidence: 99%

Point Cloud Data Fusion for Enhancing 2D Urban Flood Modelling

Meesuk¹

2017

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Although all care is taken to ensure the integrity and the quality of this publication and the information herein, no responsibility is assumed by the publishers, the author nor UNESCO-IHE for any damage to the property or persons as a result of operation or use of this publication and/or the information contained herein. A pdf version of this work will be made available as Open Access via http://repository.tudelft.nl/ihe This version is licensed under the Creative Commons Attribution-Non Commercial 4.0 International License, http://creativecommons.org/licenses/by-nc/4.0/Published by: CRC Press/Balkema PO Box 11320, 2301 EH Leiden, the Netherlands e-mail: Pub.NL@taylorandfrancis.com www.crcpress.com -www.taylorandfrancis.com to my dear family SummaryModelling urban flood dynamics requires detailed knowledge of a number of complex processes. Numerical simulation of flood propagation requires proper understanding of all processes involved. Also, special care has to be taken to adequately represent the urban topography, taking into account typical urban features like underpasses and hidden alleyways. Incorrect input data will affect the numerical model results, which may lead to inadequate flood-protection measures or even catastrophic flooding situations. This thesis explores how to include particular urban topographic features in urban flood modelling.Aerial Light Detection and Ranging (LiDAR) systems offer opportunities for achieving good quality topographic data, with less fieldwork on the ground. Even though aerial LiDAR data have long been used in many applications, conventional top-view LiDAR data can not quite capture some hidden urban features. However, recent improvements in Structure from Motion (SfM) techniques provide opportunities to achieve improved quality topographic data by using multiple viewpoints, including side-view data.This dissertation explores insights into the capabilities of assimilating SfM point cloud data by using multi-source views as input for enhancing 2D urban flood modelling. Side-view SfM point cloud data are collected and merged with conventional top-view LiDAR point cloud data to create novel Multi-Source Views (MSV) topographic data. The main objectives of this research are (i) to provide insight into the capabilities of using computer-based environments; (ii) to explore the benefits of using the new MSV data; (iii) to enhance 2D model schematizations; (iv) to compare simulated results using new MSV data and conventional top-view LiDAR data as input for urban flood models; and (v) to help developing flood-protection measures. Findings showed that simulation results using conventional top-view LiDAR-DSM as input show the least flood inundation areas and results contained many dry areas. This is because conventional LiDAR-DSM does not capture hidden urban features like underpasses, high trees, overarching structures, which behave as obstacles in 2D model schematics. When applying extended top-view LiDAR-DBM+ and the newly developed MSV-DEM as input, simulation results showed m...

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“…It has been particularly influential in Europe, and it has been associated with protective and creative measures promoted through the European Landscape Convention ( [22]) and with nature-based solutions (green infrastructure) through the European Environment Agency ( [23]). To respond to some of the great challenges such as the urbanization growth (e.g., [24,25]), inefficient drainage (and flood protection) systems, lack of biodiversity and climate change (e.g., [26]), it is required to change not only the thinking in terms of traditional flood management, which places a greater focus on grey infrastructure (pipes, concrete channels and other hard core engineering measures), but also the traditional landscape planning practice and much more on integration between the two, resulting in multifunctional green infrastructure approach (see also [14]). …”

Section: The Notion Of Multifunctionalitymentioning

confidence: 99%

Combining Ecosystem Services with Cost-Benefit Analysis for Selection of Green and Grey Infrastructure for Flood Protection in a Cultural Setting

et al. 2016

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Abstract:The present paper describes a methodological framework that combines ecosystem services (flood protection, education, art/culture, recreation and tourism) with economic analysis for selection of multifunctional measures for flood resilience. The framework includes active stakeholder participation and it consists of the four main components: (1) identification and valuation of ecosystem services pertinent to the project site under various mitigation scenarios, including baseline (pre-mitigation conditions); (2) evaluation of most effective flood mitigation measures through hydrodynamic simulations, and evaluation of economic viability using cost-benefit analysis; (3) selection of measures through consideration of ecosystem services, and solicitation of stakeholders' inputs; (4) development of the conceptual landscape design. Application of the framework was demonstrated in a case study of Ayutthaya Island, Thailand. Results of our research suggest that taking a holistic perspective of ecosystem services and economic assessments, marshalled through active stakeholder participation, has the potential to achieve more ecologically sustainable and socially acceptable solutions for flood protection in areas with cultural heritage. However, there is still a considerable challenge in taking this framework to a full-scale practical implementation, and this mainly relates to the selection of indicators that can enable proper application of ecosystem services.

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Potential Impact of Climate Change on Rainfall Intensity-Duration-Frequency Curves in Roorkee, India

Cited by 42 publications

References 20 publications

Effects of Reducing Convective Acceleration Terms in Modelling Supercritical and Transcritical Flow Conditions

Effects of Reducing Convective Acceleration Terms in Modelling Supercritical and Transcritical Flow Conditions

Point Cloud Data Fusion for Enhancing 2D Urban Flood Modelling

Combining Ecosystem Services with Cost-Benefit Analysis for Selection of Green and Grey Infrastructure for Flood Protection in a Cultural Setting

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