Exploring disaster impacts on adaptation actions in 549 cities worldwide

Daniel Nohrstedt (), Jacob Hileman, Maurizio Mazzoleni, Giuliano Baldassarre and Charles F. Parker
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Daniel Nohrstedt: Uppsala University
Jacob Hileman: Uppsala University
Maurizio Mazzoleni: Uppsala University
Giuliano Baldassarre: Uppsala University
Charles F. Parker: Uppsala University

Nature Communications, 2022, vol. 13, issue 1, 1-10

Abstract: Abstract Whether disasters influence adaptation actions in cities is contested. Yet, the extant knowledge base primarily consists of single or small-N case studies, so there is no global overview of the evidence on disaster impacts and adaptation. Here, we use regression analysis to explore the effects of disaster frequency and severity on four adaptation action types in 549 cities. In countries with greater adaptive capacity, economic losses increase city-level actions targeting recently experienced disaster event types, as well as actions to strengthen general disaster preparedness. An increase in disaster frequency reduces actions targeting hazard types other than those that recently occurred, while human losses have few effects. Comparisons between cities across levels of adaptive capacity indicate a wealth effect. More affluent countries incur greater economic damages from disasters, but also have higher governance capacity, creating both incentives and opportunities for adaptation measures. While disaster frequency and severity had a limited impact on adaptation actions overall, results are sensitive to which disaster impacts, adaptation action types, and adaptive capacities are considered.

Date: 2022
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DOI: 10.1038/s41467-022-31059-z

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