2023
DOI: 10.1029/2023wr035100
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Bias in Flood Hazard Grid Aggregation

Seth Bryant,
Heidi Kreibich,
Bruno Merz

Abstract: Reducing flood risk through disaster planning and risk management requires accurate estimates of exposure, damage, casualties, and environmental impacts. Models can provide such information; however, computational or data constraints often lead to the construction of such models by aggregating high‐resolution flood hazard grids to a coarser resolution, the effect of which is poorly understood. Through the application of a novel spatial classification framework, we derive closed‐form solutions for the location … Show more

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Cited by 2 publications
(1 citation statement)
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“…To better evaluate W SE downscaling algorithms, we adapt the Resample Case framework from Bryant et al (2023) to classify each cell in the s2 domain into one of four cases with similar disaggregation behaviour. Each case is defined by comparing the local coarse water depth value (W SH s2,j ) to the corresponding fine values (W SH s1,i ) where cell j is composed of a block of i cells as shown graphically in Fig.…”
Section: Resample Casementioning
confidence: 99%
“…To better evaluate W SE downscaling algorithms, we adapt the Resample Case framework from Bryant et al (2023) to classify each cell in the s2 domain into one of four cases with similar disaggregation behaviour. Each case is defined by comparing the local coarse water depth value (W SH s2,j ) to the corresponding fine values (W SH s1,i ) where cell j is composed of a block of i cells as shown graphically in Fig.…”
Section: Resample Casementioning
confidence: 99%