Mapping the Sensitivity of Population Exposure to Changes in Flood Magnitude: Prospective Application From Local to Global Scale

Zischg, Andreas Paul; Bermúdez, María

doi:10.3389/feart.2020.534735

Cited by 15 publications

(10 citation statements)

References 66 publications

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“…But in comparison, local scales such as in controlled communities, can measure accurate data of multiple variables (including precipitation, climate change variations, traffic data etc.) with high resolution; thus, generating flood modeling maps for determining resilience with greater accuracy (Zischg and Bermúdez, 2020). Rapid urbanization and increases in population have led to uncertainties in flood risk assessment like impacts in temporal and spatial variability, model formulation, and parameter estimation, which are difficult to quantify (Ahmad and Simonovic, 2013).…”

Section: Discussionmentioning

confidence: 99%

Flood Impact Assessments on Transportation Networks: A Review of Methods and Associated Temporal and Spatial Scales

Rebally

Valeo

et al. 2021

Front. Sustain. Cities

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A region's transportation sector is vital to its economic and social health. Transportation systems are also influenced by climate change directly and indirectly and on a variety of spatial and temporal scales. Under a changing climate, many regions around the globe and especially in urban areas, have experienced increases in flood intensity and frequency in recent decades. Flooding can strain transportation networks in both the short- and long-term through transportation delays, infrastructure damage, and recovery, and potentially affect economies. The present article is a review of how flooding impacts transportation networks in both short- and long-term timescales and their subsequent impact on resiliency of the network. Firstly, flood effects are classified based on the connections between the type of flooding and the type of impact (either direct or indirect) on the transportation system. An analysis of the assessment methods and the transport models used to formulate flood effects on the transportation system is provided, as well as the drawbacks from the context of timescales, and recommendations for future research. The analysis indicates that the majority of the articles assess the direct and tangible impacts with focus on the resilience of the transportation network in short- and medium-term temporal scales and at smaller spatial scales. There is less emphasis on indirect, intangible flood impacts, and long-term temporal scales.

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Section: Discussionmentioning

confidence: 99%

Flood Impact Assessments on Transportation Networks: A Review of Methods and Associated Temporal and Spatial Scales

Rebally

Valeo

et al. 2021

Front. Sustain. Cities

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“…Floodplains and the species dependent on them are sensitive to the frequency, timing, duration, and intensity of floods (e.g., Takata et al 2017;Zischg and Bermúdez 2020). Climate change alters the timing and duration of inundation.…”

Section: Floodplainmentioning

confidence: 99%

Climate Change Impacts on San Francisco Estuary Aquatic Ecosystems: A Review

Herbold¹,

Bush²,

Castillo³

et al. 2022

SFEWS

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Climate change is intensifying the effects of multiple interacting stressors on aquatic ecosystems, particularly in estuaries. In the San Francisco Estuary, signals of climate change are apparent in the long-term monitoring record. Here we synthesize current and potential future climate change effects on three main ecosystems (floodplain, tidal marsh, and open water) in the upper estuary and two representative native fishes that commonly occur in these ecosystems (anadromous Chinook Salmon, Oncorhynchus tshawytscha and estuarine resident Sacramento Splittail, Pogonichthys macrolepidotus). Based on our review, we found that the estuary is experiencing shifting baseline environmental conditions, amplification of extremes, and restructuring of physical habitats and biological communities. We present priority topics for research and monitoring, and a conceptual model of how the estuary currently functions in relation to climate variables. In addition, we discuss four tools for management of climate change effects: regulatory, water infrastructure, habitat development, and biological measures. We conclude that adapting to climate change requires fundamental changes in management.

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“…This allows for a comparison of methods delineating flood-prone zones, rather than a comparison of underlying terrain model performance. Furthermore, JRC and GAR have been in high demand in flood exposure studies (Alfieri et al, 2017;Ehrlich et al, 2018;UNISDR, 2015;Zischg and Bermúdez, 2020), and included in previous inter-model comparison and validation studies (Aerts et al, 2020;Bernhofen et al, 2018;Trigg et al, 2016). The GAR model has also been referred to by previous literature as the CIMA-UNEP model (Bernhofen et al, 2018;Trigg et al, 2016 The model structure of JRC and GAR differs in the sense that GAR builds upon one-dimensional hydraulic modelling, while JRC builds upon two-dimensional hydrodynamic modelling (Dottori et al, 2016;CIMA Foundation, 2015).…”

Section: Flood Mapsmentioning

confidence: 99%

Global riverine flood risk – how do hydrogeomorphic floodplain maps compare to flood hazard maps?

Lindersson¹,

Brandimarte²,

Mård³

et al. 2021

Preprint

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Abstract. Riverine flood risk studies require the identification of areas prone to potential flooding. This process can be based on either (hydrologically-derived) flood hazard maps or (topography-based) hydrogeomorphic floodplain maps. In this paper, we derive and compare riverine flood exposure from three global products: a hydrogeomorphic floodplain map (GFPLAIN) and two flood hazard maps (JRC and GAR). We find an average spatial agreement between these maps of around 30% at river basin level on a global scale. This agreement is highly variable across model combinations and geographic conditions, influenced by climatic humidity, river volume, topography, and coastal proximity. Contrary to expectations, the agreement between the two flood hazard maps is lower compared to their agreement with the hydrogeomorphic floodplain map. We also map riverine flood exposure for 26 countries across the Global South, by intersecting these maps with three human population maps (GHS, HRSL and WorldPop). The findings of this study indicate that hydrogeomorphic floodplain maps can be a valuable way of producing high-resolution maps of flood-prone zones to support riverine flood risk studies, but caution should be taken in regions that are dry, steep, very flat or near the coast.

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Mapping the Sensitivity of Population Exposure to Changes in Flood Magnitude: Prospective Application From Local to Global Scale

Cited by 15 publications

References 66 publications

Flood Impact Assessments on Transportation Networks: A Review of Methods and Associated Temporal and Spatial Scales

Flood Impact Assessments on Transportation Networks: A Review of Methods and Associated Temporal and Spatial Scales

Climate Change Impacts on San Francisco Estuary Aquatic Ecosystems: A Review

Global riverine flood risk – how do hydrogeomorphic floodplain maps compare to flood hazard maps?

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