Is the number of global natural disasters increasing?

自然灾害 自然灾害 山崩 全球变暖 地理 自然(考古学) 气候变化 历史 气候学 气象学 地质学 地震学 考古 海洋学
作者
G. Alimonti,Luigi Mariani
出处
期刊:Environmental Hazards [Taylor & Francis]
卷期号:: 1-17 被引量:14
标识
DOI:10.1080/17477891.2023.2239807
摘要

ABSTRACTWe analyze temporal trends in the number of natural disasters reported since 1900 in the Emergency Events Database (EM-DAT) from the Center for Research on the Epidemiology of Disasters (CRED). Visual inspection suggests three distinct phases: first, a linear upward trend to around mid-century followed by rapid growth to the turn of the new century, and thereafter a decreasing trend to 2022. These observations are supported by piecewise regression analyses that identify three breakpoints (1922, 1975, 2002), with the most recent subperiod 2002–2022 characterized by a significant decline in number of events. A similar pattern over time is exhibited by contemporaneous number of geophysical disasters – volcanoes, earthquakes, dry landslides – which, by their nature, are not significantly influenced by climate or anthropogenic factors. We conclude that the patterns observed are largely attributable to progressively better reporting of natural disaster events, with the EM-DAT dataset now regarded as relatively complete since ∼2000. The above result sits in marked contradiction to earlier analyses by two UN bodies (FAO andUNDRR), which predicts an increasing number of natural disasters and impacts in concert with global warming. Our analyses strongly refute this assertion as well as extrapolations published by UNDRR based on this claim.KEYWORDS: Natural disastersadaptationEmergency Events Database EM-DAT AcknowledgmentsThe authors thank the reviewers for their valuable suggestions that allowed a significant improvement of the manuscript.Disclosure statementNo potential conflict of interest was reported by the authors.Data availability statementThe data that support the findings of this study are available to the public on the links specified in the article.Correction StatementThis article has been corrected with minor changes. These changes do not impact the academic content of the article.Notes1 These crops were chosen because they represent the four main world agricultural commodities and account for about 64% of global caloric consumption (Gray et al., Citation2014).
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