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  • Perspective
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Understanding and managing connected extreme events

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Abstract

Extreme weather and climate events and their impacts can occur in complex combinations, an interaction shaped by physical drivers and societal forces. In these situations, governance, markets and other decision-making structures—together with population exposure and vulnerability—create nonphysical interconnections among events by linking their impacts, to positive or negative effect. Various anthropogenic actions can also directly affect the severity of events, further complicating these feedback loops. Such relationships are rarely characterized or considered in physical-sciences-based research contexts. Here, we present a multidisciplinary argument for the concept of connected extreme events, and we suggest vantage points and approaches for producing climate information useful in guiding decisions about them.

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Fig. 1: The flow of connected extremes.
Fig. 2: Major losses caused by extreme climate events over 1980–2019 and their connective elements.
Fig. 3: Decisions related to multiscale connected extremes.

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Data availability

Data used in Fig. 2 are available from the corresponding author upon reasonable request. The data are not publicly available as they are part of a commercially proprietary dataset.

Code availability

Code for reproducing Figs. 2 and 3 has been archived at https://doi.org/10.5281/zenodo.3714226.

Change history

  • 22 June 2020

    In the version of this Perspective originally published, ‘Temporal compounding, concurrent’ in Fig. 2 should have read ‘Temporal compounding, concurrence’; this has now been corrected in the online versions.

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Acknowledgements

This paper was developed from ideas discussed at a May 2019 workshop at Columbia University, organized by C.R., R.M.H., J.Z., O.M., A.A., S.J.C., M.O., A.C.R., T.W., N. Diffenbaugh, S. I. Seneviratne and A. Sobel (http://extremeweather.columbia.edu/workshop-on-correlated-extremes/). The workshop drew generous support from the U.S. National Science Foundation’s Prediction of and Resilience against Extreme Events (PREEVENTS) program, Aon, the Columbia University Initiative on Extreme Weather and Climate, NOAA’s Consortium for Climate Risk in the Urban Northeast (CCRUN), the World Climate Research Programme’s (WCRP) Grand Challenge on Weather and Climate Extremes, and the European COST Action ‘Understanding and modeling compound climate and weather events’ (DAMOCLES; CA17109). A portion of C.R.’s work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. R.M.H acknowledges support from the NOAA RISA Program (grant no. NA15OAR4310147). J.Z. acknowledges financial support from the Swiss National Science Foundation (Ambizione grant no. 179876). O.M. acknowledges financial support from the Swiss National Science Foundation (grant no. 178751). T.W. acknowledges financial support from the National Science Foundation (grant no. AGS-1929382).

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C.R., R.M.H., J.Z. and O.M. developed the initial concept. C.R. created figures and S.G.B. provided data for Fig. 2. C.R. led the writing of the manuscript, and all authors contributed to writing and editing.

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Correspondence to Colin Raymond.

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Peer review information Nature Climate Change thanks Franziska Gaupp, Silvia Torresan, Gabrielle Wong-Parodi and the other, anonymous, reviewer(s) for their contribution to the peer review of this work.

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Raymond, C., Horton, R.M., Zscheischler, J. et al. Understanding and managing connected extreme events. Nat. Clim. Chang. 10, 611–621 (2020). https://doi.org/10.1038/s41558-020-0790-4

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