Advances in surrogate modeling for storm surge prediction: storm selection and addressing characteristics related to climate change

Jize Zhang, Alexandros A. Taflanidis (), Norberto C. Nadal-Caraballo, Jeffrey A. Melby and Fatimata Diop
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Jize Zhang: University of Notre Dame
Alexandros A. Taflanidis: University of Notre Dame
Norberto C. Nadal-Caraballo: United States Army Corps of Engineers
Jeffrey A. Melby: Noble Consultants-G.E.C., Inc.
Fatimata Diop: United States Army Corps of Engineers

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2018, vol. 94, issue 3, No 13, 1225-1253

Abstract: Abstract This paper establishes various advancements for the application of surrogate modeling techniques for storm surge prediction utilizing an existing database of high-fidelity, synthetic storms (tropical cyclones). Kriging, also known as Gaussian process regression, is specifically chosen as the surrogate model in this study. Emphasis is first placed on the storm selection for developing the database of synthetic storms. An adaptive, sequential selection is examined here that iteratively identifies the storm (or multiple storms) that is expected to provide the greatest enhancement of the prediction accuracy when that storm is added into the already available database. Appropriate error statistics are discussed for assessing convergence of this iterative selection, and its performance is compared to the joint probability method with optimal sampling, utilizing the required number of synthetic storms to achieve the same level of accuracy as comparison metric. The impact on risk estimation is also examined. The discussion then moves to adjustments of the surrogate modeling framework to support two implementation issues that might become more relevant due to climate change considerations: future storm intensification and sea level rise (SLR). For storm intensification, the use of the surrogate model for prediction extrapolation is examined. Tuning of the surrogate model characteristics using cross-validation techniques and modification of the tuning to prioritize storms with specific characteristics are proposed, whereas an augmentation of the database with new/additional storms is also considered. With respect to SLR, the recently developed database for the US Army Corps of Engineers’ North Atlantic Comprehensive Coastal Study is exploited to demonstrate how surrogate modeling can support predictions that include SLR considerations.

Keywords: Kriging; Storm surge; Storm selection; Surrogate model extrapolation; Gaussian process regression; Sea level rise (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (5)

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DOI: 10.1007/s11069-018-3470-1

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