Preprints
https://doi.org/10.5194/nhess-2022-139
https://doi.org/10.5194/nhess-2022-139
 
19 May 2022
19 May 2022
Status: this preprint is currently under review for the journal NHESS.

Multi-hazard Tropical Cyclone Risk Assessment for Australia

Cameron Do1,2,3 and Yuriy Kuleshov1,2 Cameron Do and Yuriy Kuleshov
  • 1Bureau of Meteorology, 700 Collins Street, Melbourne, Victoria 3008, Australia
  • 2Royal Melbourne University of Technology (RMIT) University, 124 La Trobe Street, Melbourne, Victoria 3000, Australia
  • 3Monash University, Clayton Campus, Wellington Road, Victoria 3800, Melbourne, Australia

Abstract. Tropical cyclones (TCs) have long posed a significant threat to Australia's population, infrastructure, and natural environment. This threat may grow under climate change as projections indicate continuing sea level rise and increases in rainfall during TC events. Previous TC risk reduction efforts have focused on the risk from wind alone, whereas a holistic approach requires multi-hazard risk assessments that also consider impacts of other TC-related hazards. This study assessed and mapped TC risk nationwide, focusing on the impacts on population and infrastructure from the TC-related hazards of wind, storm surge, flooding and landslides. Risk maps were created at the Local Government Area (LGA) level for all of Australia, using collated data on multiple hazards, exposure and vulnerability. The study demonstrated that the risk posed by all hazards was highest for coastal LGAs of eastern Queensland and New South Wales followed by medium risk across Northern Territory and north-west of Western Australia, with flood and landslide hazards also affecting several inland LGAs. The resulting maps of risk will provide decision-makers with the information needed to further reduce TC risk, save lives, protect the environment, and reduce economic losses.

Cameron Do and Yuriy Kuleshov

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on nhess-2022-139', Anonymous Referee #1, 15 Jul 2022
    • AC1: 'Reply on RC1', Y. Kuleshov, 05 Sep 2022
  • RC2: 'Comment on nhess-2022-139', Anonymous Referee #2, 20 Jul 2022
    • AC2: 'Reply on RC2', Y. Kuleshov, 05 Sep 2022

Cameron Do and Yuriy Kuleshov

Cameron Do and Yuriy Kuleshov

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Short summary
Tropical cyclone (TC) risk over Australia was assessed focusing on the impacts on population and infrastructure from hazards of wind, storm surge, flooding and landslides. The risk posed by all hazards was highest for coastal areas of east, north and north-west of Australia, with flood and landslide hazards also affecting several inland areas. The resulting maps of risk will provide decision-makers with the information needed to further reduce TC risk, save lives, and reduce economic losses.
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