Preprints
https://doi.org/10.5194/gmd-2021-192
https://doi.org/10.5194/gmd-2021-192

Submitted as: model description paper 29 Jul 2021

Submitted as: model description paper | 29 Jul 2021

Review status: this preprint is currently under review for the journal GMD.

Globally consistent assessment of economic impacts of wildfires in CLIMADA v2.2

Samuel Lüthi1,2, Gabriela Aznar-Siguan2, Christopher Fairless1, and David N. Bresch1,2 Samuel Lüthi et al.
  • 1Institute for Environmental Decisions, ETH Zurich, Zurich, Switzerland
  • 2Federal Office of Meteorology and Climatology, MeteoSwiss, Zürich-Airport, Switzerland

Abstract. In light of the dramatic increase in economic impacts due to wildfires over recent years, the need for globally consistent impact modelling of wildfire damages is ever increasing. Insurance companies, individual households, humanitarian organisations and governmental authorities, as well as investors and portfolio owners, are increasingly required to account for climate-related physical risks. In this study we present a globally consistent and spatially explicit approach to modelling wildfire impacts using the open-source and open-access risk modelling platform CLIMADA (CLImate ADAptation). All input data is free, public and globally available, ensuring applicability in data-scarce regions of the Global South. The model was calibrated at resolutions of 1, 4 and 10 kilometers using information on past wildfire damage reported by the disaster database EM-DAT. Despite the large remaining uncertainties, the model yields sound damage estimates with a model performance well in line with the results of other natural catastrophe impact models, such as for tropical cyclones. To complement the global 10 perspective of this study, we conducted two case studies on the recent mega fires in Chile (2017) and Australia (2020). The model is made available online as part of a Python package, ready for application in practical contexts such as disaster risk assessment or physical climate risk disclosure.

Samuel Lüthi et al.

Status: open (until 08 Oct 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CEC1: 'Comment on gmd-2021-192', Juan Antonio Añel, 08 Aug 2021 reply
  • RC1: 'Comment on gmd-2021-192', Olivia Romppainen-Martius, 31 Aug 2021 reply

Samuel Lüthi et al.

Samuel Lüthi et al.

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Short summary
In light of the dramatic increase in economic impacts due to wildfires, the need for modelling impacts of wildfire damages is ever increasing. Insurance companies, households, humanitarian organisations and governmental authorities are worried by climate risks. In this study we present an approach to modelling wildfire impacts using the open-source modelling platform CLIMADA. All input data is free, public and globally available, ensuring applicability in data-scarce regions of the Global South.