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Assessing population exposure to coastal flooding due to sea level rise

Author

Listed:
  • Mathew E. Hauer

    (Florida State University
    Florida State University)

  • Dean Hardy

    (University of South Carolina
    University of South Carolina)

  • Scott A. Kulp

    (Climate Central)

  • Valerie Mueller

    (Arizona State University
    International Food Policy Research Institute)

  • David J. Wrathall

    (Oregon State University)

  • Peter U. Clark

    (Oregon State University
    University of Ulster)

Abstract

The exposure of populations to sea-level rise (SLR) is a leading indicator assessing the impact of future climate change on coastal regions. SLR exposes coastal populations to a spectrum of impacts with broad spatial and temporal heterogeneity, but exposure assessments often narrowly define the spatial zone of flooding. Here we show how choice of zone results in differential exposure estimates across space and time. Further, we apply a spatio-temporal flood-modeling approach that integrates across these spatial zones to assess the annual probability of population exposure. We apply our model to the coastal United States to demonstrate a more robust assessment of population exposure to flooding from SLR in any given year. Our results suggest that more explicit decisions regarding spatial zone (and associated temporal implication) will improve adaptation planning and policies by indicating the relative chance and magnitude of coastal populations to be affected by future SLR.

Suggested Citation

  • Mathew E. Hauer & Dean Hardy & Scott A. Kulp & Valerie Mueller & David J. Wrathall & Peter U. Clark, 2021. "Assessing population exposure to coastal flooding due to sea level rise," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-27260-1
    DOI: 10.1038/s41467-021-27260-1
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    References listed on IDEAS

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    2. Sadaf Mahmoudi & Hamed Moftakhari & David F. Muñoz & William Sweet & Hamid Moradkhani, 2024. "Establishing flood thresholds for sea level rise impact communication," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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